ACME, ANSI & ISO METRIC

Replace Rings & Plug Gages…
   Save Time and Money with Better Accuracy…
      Cover a Wide Range of Diameters and Thread Types…

Gagemaker’s JSS™ Thread Inspection System for ACME, ANSI & ISO Metric. Today’s dynamic manufacturing environment overwhelms old “GO/NO GO” methods and only our Straight Thread Inspection System consistently goes above and beyond. An effective Straight Thread Inspection System should measure all of the vital thread attributes – Functional Thread Size, Pitch Diameter, Thread Lead, Thread Height, and Thread Form.

JSS ACME, ANSI & ISO Metric Inspection Process

 Assure Maximum Performance with Gagemaker’s JSS Straight Thread Inspection System

GagemakerStraight-Thread

    • Easy to Use
    • Measure a Variety of Thread Forms & Sizes
    • Quickly Verify Go & No Go Diameters
    • Verify Exact Mating and Interchangeability of Threads
    • No Expensive Thread Setting MAsters Required
    • No Waiting for Specially Sized Gages to be Ground

 

Insert Identification

Insert-IdentificationThe first step in the quality process is to ensure the  threading insert being used is correct for the job.
Use the JSS™ Thread Insert Identifier Template to quickly verify that the correct threading insert has been selected as well as check the full topping profile of both internal and external inserts.

A quick mating of the insert to the template ensures the insert is correct for the job.

JSS™ insert identifiers have multiple notches on each template and are available for all ANSU thread forms.

Gagemaker’s straights thread insert identifiers easily determine which threading insert the machinist is using.

When an optical comparator is unavailable, the insert identifier will show which thread form is on the insert.

Thread TypeThread FormTaper per Foot/PitchModel
StraightInternal ACME3P, 3.5P, 4P, 5P, 6P, 8P, 10P, 12P, 14P, & 16PTI-ACME-INT
StraightInternal Stub ACME3P, 3.5P, 4P, 5P, 6P, 8P, 10P, 12P, 14P, & 16PTI-SACME-INT

Inspection Setup

Gagemaker-TDWINThe Thread Disk™ engineering software (TDWin™) calculates critical dimensions for threads based on ANSI tables and formulas. Thread types supported by the program include: UN, UNJ and UNR Series, Acme, Stub Acme, Stub Acme Modified I and II, Metric M & MJ, 7° X 45° Buttress, and General Purpose Pipe Threads.

To generate critical dimensions instantly, enter basic thread information on the Thread Type Entry screen, such as: thread type, thread class, nominal diameter, and threads per inch. once the results are computed, tabs at the bottom of the program allow selection of several types of calculated information, including dimensions and tolerances for product threads, ring gages, set plugs, plug gages or Gagemaker’s Thread Diameter gages.

If measuring internal and external shallow taper diameters is a problem, the Ball mic SET DIM Tool provides setting dimensions for ball micrometers or Gagemaker’s BX-1000 groove gage. The program calculates ball mic settings for any tapered surface geometry.

Other features of the program include the ability to print thread dimension reports, providing a paper copy of any calculation. These reports provide the same critical dimensions that display in the program. A multiple calculation window capability is a feature that allows performing several different thread calculation at the same time.

System Requirements

  • Windows XP or higher
  • 64 MB RAM
  • 3 MD of free hard disk space
  • CD-ROM drive

Features

  • Uses ANSI tables, formulas, and tolerances
  • Calculates standard and non-standard product thread diameters from #000 to 99.8″
  • Calculates ANSI ring and plug gage dimensions
  • Addresses pitches from 1 to 400
  • Calculates Gagemaker style thread gage seting dimensions
User LicensesDescriptionModel
1Thread Disk- Thread Engineering and Calcuation Software, Single User licenseTDWIN
2Thread Disk- Thread Engineering and Calcuation Software, no license agreement required, 2 discs shipped, 20% discountTDWIN-2USER
5Thread Disk- Thread Engineering and Calcuation Software, Floating 5 user licenseTDWIN-LIC5
10Thread Disk- Thread Engineering and Calcuation Software, Floating 10 user licenseTDWIN-LIC10
15Thread Disk- Thread Engineering and Calcuation Software, Floating 15 user licenseTDWIN-LIC15

GagemakerTDWIN-Screenshot1Parameter Input Screen
GagemakerTDWIN-Screenshot3Setting Dimension & Gage Selection Screen
GagemakerTDWIN-Screenshot2Thread Geometry Screen

Functional Size Inspection

Gagemaker-RG-7000-funcational-size-on-partFunctional gauging takes into account the cumulative effects of diameter, lead, taper, flank angle and form error. Experience the same functionality of ring and plugs with the added benefit of accurately inspecting a range of sizes.

Functional thread inspection gages, or GO/NO GO gages, measure thread diameters. These functional gages are adjustable within a size range and use interchangeable thread rolls to measure different pitch threads.

Setting dimensions for the functional pitch diameter gages are provided by the TDWIN Thread Disk™ software.

External Functional Size

These functional inspection gages measure external GO/NO GO thread diameters. Software, gages, and thread rolls are sold separately. For gages with ranges greater than 12”, please see our functional size product page. Higher resolution indicators are also available.[

ModelDescriptionRangeIndicator ResolutionIndicator Travel
RG-7000External Functional Size Thread Roll Gage⅝” – 4”
(15.9 mm – 101.6 mm)
.0005” ½”
RG-7001External Functional Size Thread Roll Gage4” – 8”
(101.6 mm – 203.2 mm)
.0005” ½”
RG-7002External Functional Size Thread Roll Gage8” – 12”
(203.2 mm – 304.8 mm)
.0005” ½”
Internal Functional Size

Gagemaker also manufactures functional inspection gages that inspect internal GO/NO GO thread diameters. Software, gages, and thread rolls are sold separately. For gages with ranges greater than 16”, please see our functional size product page. Higher resolution indicators are also available.

ModelDescriptionRangeIndicator ResolutionIndicator TravelReach
PG-6000Internal Functional Size Thread Roll Gage1½” – 9”
(38 mm – 228.6 mm)
.0005” ½”2½”
PG-6001Internal Functional Size Thread Roll Gage 9” – 16”
(228.6 mm – 406.4 mm)
.0005” ½”2½”

Gagemaker recommends presetting (or setting) our gages with our MIC TRAC™ Gage Setting System, the MT-3000 Series*. Setting dimensions are found in the TDWIN™ software, sold separately. For additional gage setting system options and accessories, please visit our Gage Setting System product page.

Rod standards are available, but are made to order. For ordering individual rod setting standards, contact customer service and please specify size or specific connection with ordering.(Ex. 4 pitch ACME, 12 pitch UN Series, etc.)

*We now also offer the MT-100 gage setting device.

External RangeInternal RangeAccuracyResolutionDescriptionModel
1½” – 13½”
(38.1 mm - 342.9 mm)
0” – 12”
(0 mm - 304.8 mm)
--12" Manual MIC TRAC unti supplied with TF-PL setting blocks. Designed for field use to verify gages are properly preset.*MT-100
1½” – 25½”
(38.1 mm - 647.7 mm)
0” – 24”
(0 mm - 609.6 mm)
--24" Manual MIC TRAC unti supplied with TF-PL setting blocks. Designed for field use to verify gages are properly preset.*MT-101
1½” – 13½”
(38.1 mm - 342.9 mm)
0” – 12”
(0 mm - 304.8 mm)
±.0001”.00005”MIC TRAC™ 12" Base Unit with DROMT-3012-50
1½” – 25½”
(38.1 mm - 647.7 mm)
0” – 24”
(0 mm - 609.6 mm)
±.0002”.00005”MIC TRAC™ 24" Base Unit with DROMT-3024-50
1½” – 37½”
(38.1 mm - 952.5 mm)
0” – 36”
(0 mm - 914.4 mm)
±.0003”.00005”MIC TRAC™ 36" Base Unit with DROMT-3036-50
1½” – 49½”
(38.1 mm - 1257.3 mm)
0” – 48”
(0 mm - 1219.2 mm)
±.0004”.00005”MIC TRAC™ 48" Base Unit with DROMT-3048-50

Thread Rolls for Functional Size Gages

Gagemaker thread rolls are sold in matched sets of two rolls. Specify the form and pitch of the thread when ordering. Our most popular models are listed below, but additional and custom sets are available. Thread rolls sets are sold separately.

UN Series (60° “V”)

“TRV” thread rolls inspect the functional fit of machine threaded parts with 60° “V” thread forms. These thread rolls are designed specifically for internal or external applications. Additional pitches are available. Please contact customer service for more information.

PitchDescriptionModel
4External 4 pitch UN/60° “V” Thread Rolls, Set of 2TRVE-4P
5External 5 pitch UN/60° “V” Thread Rolls, Set of 2TRVE-5P
6External 6 pitch UN/60° “V” Thread Rolls, Set of 2TRVE-6P
8External 8 pitch UN/60° “V” Thread Rolls, Set of 2TRVE-8P
10External 10 pitch UN/60° “V” Thread Rolls, Set of 2TRVE-10P
12External 12 pitch UN/60° “V” Thread Rolls, Set of 2TRVE-12P
14External 14 pitch UN/60° “V” Thread Rolls, Set of 2TRVE-14P
16External 16 pitch UN/60° “V” Thread Rolls, Set of 2TRVE-16P
18External 18 pitch UN/60° “V” Thread Rolls, Set of 2TRVE-18P
20External 20 pitch UN/60° “V” Thread Rolls, Set of 2TRVE-20P
PitchDescriptionModel
4Internal 4 pitch UN/60° “V” Thread Rolls, Set of 2TRVI-4P
5Internal 5 pitch UN/60° “V” Thread Rolls, Set of 2TRVI-5P
6Internal 6 pitch UN/60° “V” Thread Rolls, Set of 2TRVI-6P
8Internal 8 pitch UN/60° “V” Thread Rolls, Set of 2TRVI-8P
10Internal 10 pitch UN/60° “V” Thread Rolls, Set of 2TRVI-10P
12Internal 12 pitch UN/60° “V” Thread Rolls, Set of 2TRVI-12P
14Internal 14 pitch UN/60° “V” Thread Rolls, Set of 2TRVI-14P
16Internal 16 pitch UN/60° “V” Thread Rolls, Set of 2TRVI-16P
18Internal 18 pitch UN/60° “V” Thread Rolls, Set of 2TRVI-18P
20Internal 20 pitch UN/60° “V” Thread Rolls, Set of 2TRVI-20P
ACME, Stub ACME, Stub ACME Modified-1, & Stub ACME Modified-2

“TRA” and “TRSA” thread rolls inspect the functional fit of parts with 29° ACME and Stub ACME thread forms. “TRSAM1” and “TRSAM2” inspect the functional fit of Stub ACME Modified-1 and Stub ACME Modified -2 thread forms. Additional pitches are available. Please contact customer service for more information.

PitchDescriptionModel
229° ACME 2 Pitch Thread Rolls, Set of 2 TRA-2P
329° ACME 3 Pitch Thread Rolls, Set of 2 TRA-3P
429° ACME 4 Pitch Thread Rolls, Set of 2 TRA-4P
529° ACME 5 Pitch Thread Rolls, Set of 2 TRA-5P
629° ACME 6 Pitch Thread Rolls, Set of 2 TRA-6P
829° ACME 8 Pitch Thread Rolls, Set of 2 TRA-8P
1029° ACME 10 Pitch Thread Rolls, Set of 2 TRA-10P
1229° ACME 12 Pitch Thread Rolls, Set of 2 TRA-12P
1429° ACME 14 Pitch Thread Rolls, Set of 2 TRA-14P
1629° ACME 16 Pitch Thread Rolls, Set of 2 TRA-16P
1829° ACME 18 Pitch Thread Rolls, Set of 2 TRA-18P
PitchDescriptionModel
229° Stub ACME 2 Pitch Thread Rolls, Set of 2 TRSA-2P
329° Stub ACME 3 Pitch Thread Rolls, Set of 2 TRSA-3P
429° Stub ACME 4 Pitch Thread Rolls, Set of 2 TRSA-4P
529° Stub ACME 5 Pitch Thread Rolls, Set of 2 TRSA-5P
629° Stub ACME 6 Pitch Thread Rolls, Set of 2 TRSA-6P
829° Stub ACME 8 Pitch Thread Rolls, Set of 2 TRSA-8P
1029° Stub ACME 10 Pitch Thread Rolls, Set of 2 TRSA-10P
1229° Stub ACME 12 Pitch Thread Rolls, Set of 2 TRSA-12P
1429° Stub ACME 14 Pitch Thread Rolls, Set of 2 TRSA-14P
1629° Stub ACME 16 Pitch Thread Rolls, Set of 2 TRSA-16P
1829° Stub ACME 18 Pitch Thread Rolls, Set of 2 TRSA-18P
Stub ACME Modified-1 or Stub ACME Modified-2PitchDescriptionModel
Stub ACME Modified-1 33 pitch thread rolls for Stub ACME Modified-1 , Set of 2 TRSAM1-3P
Stub ACME Modified-244 pitch thread rolls Stub ACME Modified-2 s, Set of 2 TRSAM2-4P
Stub ACME Modified-255 pitch thread rolls Stub ACME Modified-2 s, Set of 2 TRSAM2-5P
Stub ACME Modified-21212 pitch thread rolls Stub ACME Modified-2, Set of 2 TRSAM2-12P
ISO Metric Series

“TRM” thread rolls inspect the functional fit of machine threaded parts with ISO Metric 60 “V” thread forms. Additional pitches are available. Please contact customer service for more information.

Pitch in millimetersDescriptionModel
4External ISO Metric 60 “V” 4 mm Pitch Thread Rolls, Set of 2TRME-4P
External ISO Metric 60 “V” 3½ mm Pitch Thread Rolls, Set of 2TRME-3.5P
3External ISO Metric 60 “V” 3 mm Pitch Thread Rolls, Set of 2TRME-3P
External ISO Metric 60 “V” 2½ mm Pitch Thread Rolls, Set of 2TRME-2.5P
2External ISO Metric 60 “V” 2 mm Pitch Thread Rolls, Set of 2TRME-2P
External ISO Metric 60 “V” 1¾ mm Pitch Thread Rolls, Set of 2TRME-15P
External ISO Metric 60 “V” 1½ mm Pitch Thread Rolls, Set of 2TRME-1.5P
1External ISO Metric 60 “V” 1 mm Pitch Thread Rolls, Set of 2TRME-1P
Pitch in millimetersDescriptionModel
4Internal ISO Metric 60 “V” 4 mm Pitch Thread Rolls, Set of 2TRME-4P
Internal ISO Metric 60 “V” 3½ mm Pitch Thread Rolls, Set of 2TRME-3.5P
3Internal ISO Metric 60 “V” 3 mm Pitch Thread Rolls, Set of 2TRME-3P
Internal ISO Metric 60 “V” 2½ mm Pitch Thread Rolls, Set of 2TRME-2.5P
2Internal ISO Metric 60 “V” 2 mm Pitch Thread Rolls, Set of 2TRME-2P
Internal ISO Metric 60 “V” 1¾ mm Pitch Thread Rolls, Set of 2TRME-15P
Internal ISO Metric 60 “V” 1½ mm Pitch Thread Rolls, Set of 2TRME-1.5P
1Internal ISO Metric 60 “V” 1 mm Pitch Thread Rolls, Set of 2TRME-1P
National 7° x 45° Buttress Series

“TRM” thread rolls inspect the functional fit of machine threaded parts with ISO Metric 60 “V” thread forms. Additional pitches are available. Please contact customer service for more information.

PitchDescriptionModel
2National 7° x 45° Buttress 2 Pitch Thread Rolls, Set of 2 TRB745-2P
3National 7° x 45° Buttress 3 Pitch Thread Rolls, Set of 2 TRB745-3P
National 7° x 45° Buttress 3½ Pitch Thread Rolls, Set of 2 TRB745-3.5P
4National 7° x 45° Buttress 4 Pitch Thread Rolls, Set of 2 TRB745-4P
6National 7° x 45° Buttress 6 Pitch Thread Rolls, Set of 2 TRB745-6P
8National 7° x 45° Buttress 8 Pitch Thread Rolls, Set of 2 TRB745-8P
10National 7° x 45° Buttress 10 Pitch Thread Rolls, Set of 2 TRB745-10P
12National 7° x 45° Buttress 12 Pitch Thread Rolls, Set of 2 TRB745-12P
16National 7° x 45° Buttress 16 Pitch Thread Rolls, Set of 2 TRB745-16P
Trapezoidal

“TRT” thread rolls inspect the functional fit of machine threaded parts with trapezoidal thread forms. Additional pitches are available. Please contact customer service for more information.

Pitch in millimetersDescriptionModel
2Trapezoidal 2 mm Pitch Thread Rolls, Set of 2TRT-2P
3Trapezoidal 3 mm Pitch Thread Rolls, Set of 2TRT-3P
4Trapezoidal 4 mm Pitch Thread Rolls, Set of 2TRT-4P
5Trapezoidal 5 mm Pitch Thread Rolls, Set of 2TRT-5P
6Trapezoidal 6 mm Pitch Thread Rolls, Set of 2TRT-6P
8Trapezoidal 8 mm Pitch Thread Rolls, Set of 2TRT-8P
9Trapezoidal 9 mm Pitch Thread Rolls, Set of 2TRT-9P
10Trapezoidal 10 mm Pitch Thread Rolls, Set of 2TRT-10P
12Trapezoidal 12 mm Pitch Thread Rolls, Set of 2TRT-12P

External Functional Size Inspection

Internal Functional Size Inspection

Thread Pitch Diameter Inspection

Gagemaker-PD-8001-on-part
Gagemaker pitch diameter gages, commonly known as ball PD gages, verify that your part is within allowable tolerances. Improperly sized pitch diameters compromise the load capacity of your threaded components.  The ball pitch diameter gages gages indicate the pitch diameter size of the product’s external and internal threads. The gages are adjustable within a size range and use interchangeable contact points to measure different pitch threads. Setting dimensions for the pitch diameter gages are provided by the TDWIN™ Thread Disk software.

External Pitch Diameter

These inspection gages measure external thread pitch diameters. TDWin™ Software and contact points are sold separately. For gages with ranges greater than 12”, please click here. Higher resolution and metric indicators are available.

 ModelDescriptionRangeIndicator ResolutionIndicator Travel
Gagemaker-PD-8001PD-8001External Pitch Diameter for Tapered Threads0 – 6” (0 mm – 152.4 mm).0005”½”
PD-8002External Pitch Diameter for Straight Threads6” – 12” (152.4 mm – 304.8 mm).0005”½”
Internal Pitch Diameter

These inspection gages measure internal thread pitch diameters. TDWin™ Software and contact points are sold separately. Higher resolution and metric indicators are available.

 ModelDescriptionRangeIndicator TravelIndicator Resolution
Gagemaker-PD-6000-PD-6000Internal Pitch Diameter Gage for Straight Threads ("V" & ACME threads)1½” – 9” (38.1 mm – 228.6 mm)½”.0005”
Gagemaker-PD-6001PD-6001Internal Pitch Diameter Gage for Straight Threads ("V" & ACME threads)6” – 24” (152.4 mm – 609.6 mm)½”.0005”

Pitch Diameter Setting Standards

Gagemaker recommends presetting (or setting) our gages with our MIC TRAC™ Gage Setting System, the MT-3000 Series. Setting dimensions are found in the TDWIN™ software, sold separately.

Rod standards are available, but are made to order. For ordering individual rod setting standards, contact customer service and please specify size or specific connection with ordering.(Ex. 4 pitch ACME, 12 pitch UN Series, etc.)

External RangeInternal RangeAccuracyResolutionDescriptionModel
1½” – 13½”
(38.1 mm - 342.9 mm)
0” – 12”
(0 mm - 304.8 mm)
--12" Manual MIC TRAC unti supplied with TF-PL setting blocks. Designed for field use to verify gages are properly preset.*MT-100
1½” – 25½”
(38.1 mm - 647.7 mm)
0” – 24”
(0 mm - 609.6 mm)
--24" Manual MIC TRAC unti supplied with TF-PL setting blocks. Designed for field use to verify gages are properly preset.*MT-101
1½” – 13½”
(38.1 mm - 342.9 mm)
0” – 12”
(0 mm - 304.8 mm)
±.0001”.00005”MIC TRAC™ 12" Base Unit with DROMT-3012-50
1½” – 25½”
(38.1 mm - 647.7 mm)
0” – 24”
(0 mm - 609.6 mm)
±.0002”.00005”MIC TRAC™ 24" Base Unit with DROMT-3024-50
1½” – 37½”
(38.1 mm - 952.5 mm)
0” – 36”
(0 mm - 914.4 mm)
±.0003”.00005”MIC TRAC™ 36" Base Unit with DROMT-3036-50
1½” – 49½”
(38.1 mm - 1257.3 mm)
0” – 48”
(0 mm - 1219.2 mm)
±.0004”.00005”MIC TRAC™ 48" Base Unit with DROMT-3048-50

Contact Points for Pitch Diameter Gages

For additional points, please visit our contact point product page.

These threaded contact points are used to inspect the pitch diameter of machined parts with 60° “V” thread forms. Two are required for pitch diameter gages. Sold individually.

PitchModel
1T562
2T288
3 & 3½T188
4T144
T128
5T115
T105
6T096
8T072
10T057
11½ & 12T050
14 & 16T041
18T032

These truncated threaded contact points are used to inspect the pitch diameter of machined parts with 29° Acme, Stub Acme, Stub ACME Modified-1, and Stub ACME Modified-2 thread forms. Two are required for pitch diameter gages. Sold individually.

PitchModel
1T531T
T344T
2T266T
T219T
3T188T
T144T
4T128T
5T105T
6 & 7T090T
8T062T
10T050T
12 & 14T041T
16T032T

These contact points are used to inspect the pitch diameter of machined parts with 7° X 45° Buttress thread forms. Two are required for pitch diameter gages. Sold individually.

PitchModel
1T562
T437
T375
2T281
T219
3T188
T156
4T144
5T115
6T096
8T072
10T057
12T050
16 & 18T032

These contact points are used to inspect the millimeter pitch diameter of machined parts with Trapezoidal thread forms. Two are required for pitch diameter gages. Sold individually.

Pitch in millimetersModel
7T144
6T125
5T096
4T082
T072
3T062
T050
2T041
T032

These contact points are used to inspect the pitch diameter of machined parts with ISO Metric 60° “V” thread forms. Two are required for pitch diameter gages. Sold individually.

Pitch in millimetersModel
4T096
3 & 3½T072
T057
1½, 1¾, & 2T041

External Pitch Diameter Inspection

Internal Pitch Diameter Inspection

Thread Lead Inspection

Gagemaker-LG-6001-handThread lead is one of the most important thread elements and directly affects a part’s functional size.

Lead error is most commonly generated by manual and CNC lathes not cutting properly. Therefore, it’s important to take measurements at the locations where the most lead error typically occurs. These readings help detect machine tool error and worn lead screws on your lathe.

Lead gages inspect both internal and external lead on a variety of thread forms.

  • Interchangeable contact points allow inspection on a variety of thread forms.
  • Inspect nearly any type of thread, straight or tapered
  • Requires presetting using Gagemaker’s lead gage setting standards.

Lead Gages

The LG-6001 and the LG-6002 use a two-point system to inspect thread lead for straight and tapered threads. The LG-6002 inspects both external and internal threads, while the LG-6001 inspects external threads. The two point system allows for a sweeping action to obtain the measurement. Both gages are available with higher resolution indicators.

The LG-5003 uses the three-point system to inspect internal and external thread lead. Two fixed contact points at the rear of the gage and one movable contact point at the front of the gage provide complete stability when taking thread lead measurements. This unique design does not require sweeping to obtain measurements.

Contact points can be easily changed to allow the gage to be used on a variety of thread forms. Each gage comes with one set of contact points.

Before inspecting parts, the lead gage must be preset to a nominal predetermined dimension using a lead gage setting standard. Lead standards are available for both straight and tapered threads. Our setting standards are manufactured according to ANSI and API specifications, respectively.

 ModelThread Length
Range
DescriptionExternal/InternalNumber of
Contact Points
Minimum
Bore
Indicator
Travel
Indicator
Resolution
Contact Point
Spacing
LG-6001-400x230LG-6001½” – 2”
(12.7 mm – 50.8 mm)
2-point external lead gageExternal22.750”.100".0005”.200”
LG-6002LG-6002½” – 4”
(0 mm – 101.6 mm)
2-point internal lead gageInternal21.450”.100".0005”.200”
Gagemaker-LG-5003LG-5003½” – 4”
(0 mm – 101.6 mm)
3-point external/internal lead gageExternal/Internal31.340”.100".0005”.500”

Lead Gage Setting Standards

Gagemaker’s precision lead gage setting standards are manufactured in accordance with ANSI Specifications. Lead gage standards are used to set the gage prior to the inspection.

Pitch/TPIDescriptionModel
6 - 18Lead gage standard for straight threads, 6-18 pitch, 4" length, .375" widthLS-1002
11½Lead gage standard for straight threads, NPS threadsLS-1004
1 - 5Lead gage standard for straight threads, 4.5" length, .750" widthLS-5001
6 - 18Lead gage standard for straight threads, 4.5" length, .750" widthLS-5002
1.25, 1.75, and 3.5 mm Lead gage standard for metric threads, 1.25, 1.75, and 3.5 mm pitchesLS-5003M
1, 1.5, 2, 3, & 4 mmLead gage standard for metric threads, 1, 1.5, 2, 3, & 4 mm pitchesLS-5004M
6 mmLead gage standard for metric threads, 6 mm pitchLS-6MM

Contact Points for Lead Gages

For additional points, please visit our contact point product page.

These contact points are used to inspect the pitch diameter of machined parts with 60° “V” thread forms. Two points are required for the LG-6001 or LG-6002. Three points are required for the LG-5003. Sold individually.

PitchModel
1T562
2T288
3 & 3½T188
4T144
T128
5T115
T105
6T096
8T072
10T057
11½ & 12T050
14 & 16T041
18T032

These truncated contact points are used to inspect the pitch diameter of machined parts with 29° Acme and Stub Acme thread forms.Two points are required for the LG-6001 or LG-6002. Three points are required for the LG-5003. Sold individually.

PitchModel
1T531T
T344T
2T266T
T219T
3T188T
T144T
4T128T
5T105T
6 & 7T090T
8T062T
10T050T
12 & 14T041T
16T032T

These contact points are used to inspect the pitch diameter of machined parts with 7° X 45° Buttress thread forms. Two points are required for the LG-6001 or LG-6002. Three points are required for the LG-5003. Sold individually.

PitchModel
1T562
T437
T375
2T281
T219
3T188
T156
4T144
5T115
6T096
8T072
10T057
12T050
16 & 18T032

These contact points are used to inspect the millimeter pitch diameter of machined parts with Trapezoidal thread forms. Two points are required for the LG-6001 or LG-6002. Three points are required for the LG-5003. Sold individually.

Pitch in millimetersModel
7T144
6T125
5T096
4T082
T072
3T062
T050
2T041
T032

These contact points are used to inspect the pitch diameter of machined parts with ISO Metric 60° “V” thread forms. Two points are required for the LG-6001 or LG-6002. Three points are required for the LG-5003. Sold individually.

Pitch in millimetersModel
4T096
3 & 3½T072
T057
1½, 1¾, & 2T041

External Lead Inspection

Internal Lead Inspection

Thread Height Inspection

Gagemaker-Straight-Thread-HeightMeasuring thread height helps monitor and control the depth of cut during manufacturing, detects broken inserts, and can be used to calculate the minor or major diameter, when only one is known.

Accurate thread height contributes to the interchangeability and integrity of the threaded assembly.

For inspecting your straight thread heights, Gagemaker recommends our TH-3001V (external) and TH-3010 (internal) .

External Thread Height

Gagemaker manufactures many models of external thread height gages. Specify the type of thread when ordering. The T500C contact point is included. Standards sold separately.

ConnectionModelDescriptionMin. BoreIndicator TravelIndicator ResolutionDial TypeIncluded Contact Point*Standard required
UN/UNJ/UNR, ACME, Stub ACME, Stub ACME Modified 1, Stub ACME Modified 2, Metric M & MJ, 7° X 45° Buttress, Line Pipe, and General Purpose Pipe ThreadsTH-3001VExternal Thread Height Gage, 0-100, T500C2.930”.196”.001”0-100, ContinuousT500CNo
UN/UNJ/UNR, ACME, Stub ACME, Stub ACME Modified 1, Stub ACME Modified 2, Metric M & MJ, 7° X 45° Buttress, Line Pipe, and General Purpose Pipe ThreadsTH-3001V-1External Thread Height Gage, 0-10-0, .0001” Resolution Indicator, T500C3.730”.250”.0001”0-10-0, BalancedT500CYes
UN/UNJ/UNR, ACME, Stub ACME, Stub ACME Modified 1, Stub ACME Modified 2, Metric M & MJ, 7° X 45° Buttress, Line Pipe, and General Purpose Pipe ThreadsTH-3001V-5External Thread Height Gage, 0-10-0, .0005” Resolution Indicator, T500C2.930”.250”.0005”0-10-0, BalancedT500CYes
Internal Thread Height

Gagemaker also manufactures several models of internal thread height gages. Please specify the type of thread when ordering. The T500C contact point is included. Standards sold separately.

ConnectionModelDescriptionMin. BoreIndicator TravelIndicator ResolutionDial TypeIncluded Contact Point*Standard required
UN/UNJ/UNR, ACME, Stub ACME, Stub ACME Modified 1, Stub ACME Modified 2, Metric M & MJ, 7° X 45° Buttress, Line Pipe, and General Purpose Pipe ThreadsTH-3010Internal Thread Height, 0-100, 1" Base Length (TPD), T5001.50”.250”.001”0-100 ContinuousT500No

Thread Height Contact Points

Gagemaker’s standard contact points are manufactured with carbide balls. Thread height gages require one contact point. Points are sold individually.

ModelDescriptionConnectionThread FormCorresponding Gages
T500C50° cone contact pointANSI Threads, ASME Threads, ISO Threads, "V" Threads, Line Pipe, and General Purpose Pipe ThreadsUN/UNJ/UNR, ACME, Stub ACME, Stub ACME Modified 1, Stub ACME Modified 2, Metric M & MJ, 7° X 45° Buttress, "V" Threads, Line Pipe, and General Purpose Pipe ThreadsTH-3001V, TH-3001V-1, TH-3001V-5, and TH-3010

External Thread Height Inspection

Internal Thread Height Inspection

Thread Form Inspection

Straight-Thread-Form-Profile-on-PartCheck proper form and pitch by placing the correct profile template into the threads. By shining a light behind the profile template, it’s possible to detect any steps or signs of a chipped insert. A template that stands too far out of the threads or allows excess light to shine through can be an indication of lead error. Sweeping the profile template along the helix of the threads helps find burrs or debris.

Thread Form

Gagemaker manufactures precision straight thread profile gages for the quick identification of product thread forms. Specify the pitch of the thread to be inspected when ordering. Special form profiles are available and are quoted upon request.

Thread FormExternal/InternalDescriptionModel
ACMEExternal/Internal External/Internal general purpose ACME thread form profile gageTP-GPA-__P
ISO MetricExternalExternal ISO Metric series thread form profile gageTP-ME-__P
ISO MetricInternalInternal ISO Metric series thread form profile gageTP-MI-__P
Stub ACMEExternal/Internal External/Internal Stub ACME thread form profile gageTP-SA-__P
Stub ACME Modified - 1External/Internal External/Internal Stub ACME Modified 1 thread form profile gageTP-SAM1-__P
Stub ACME Modified - 2External/Internal External/Internal Stub ACME Modified 2 thread form profile gageTP-SAM2-__P
UN SeriesExternalExternal UN series thread form profile gageTP-UNVE-__P
UN SeriesInternalInternal UN series thread form profile gageTP-UNVI-__P
7 X 45 ButtressExternal/Internal External/Internal 7° x 45° Buttress thread form profile gageTP-745-__P
Special profiles and overlay charts are available. For information on those available, please contact customer service. For Special Overlays, please specify the following: 1. Screen Size, 2. Magnification 20X/50X, and 3. Product Form or Profile Template

External Thread Form Inspection

Internal Thread Form Inspection

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