ACME, ANSI & ISO METRIC

The 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.

The 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.

Functional 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.[

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.

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.)

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.

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.

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.

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.

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.

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.

External Pitch Diameter Gages

	Model	Description	Range	Indicator Resolution	Indicator Travel
	PD-8001	External Pitch Diameter for Tapered Threads	0 – 6” (0 mm – 152.4 mm)	.0005”	½”
	PD-8002	External Pitch Diameter for Straight Threads	6” – 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.

Internal Pitch Diameter Gages

	Model	Description	Range	Indicator Travel	Indicator Resolution
	PD-6000	Internal Pitch Diameter Gage for Straight Threads ("V" & ACME threads)	1½” – 9” (38.1 mm – 228.6 mm)	½”	.0005”
	PD-6001	Internal 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.)

Contact Points for Pitch Diameter Gages

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

Thread 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.

	Model	Thread Length Range	Description	External/Internal	Number of Contact Points	Minimum Bore	Indicator Travel	Indicator Resolution	Contact Point Spacing
	LG-6001	½” – 2” (12.7 mm – 50.8 mm)	2-point external lead gage	External	2	2.750”	.100"	.0005”	.200”
	LG-6002	½” – 4” (0 mm – 101.6 mm)	2-point internal lead gage	Internal	2	1.450”	.100"	.0005”	.200”
	LG-5003	½” – 4” (0 mm – 101.6 mm)	3-point external/internal lead gage	External/Internal	3	1.340”	.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.

Contact Points for Lead Gages

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

Measuring 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.

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.

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.

Check 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.