Tubing & Casing JSS® Thread Inspection System

Get Fast, Accurate, Repeatable Readings Every Time…
   Ensure Stronger Connections and Optimize Performance…
       Take the Guesswork out of Inspecting Tubing or Casing…

Gagemaker’s JSS® Tubing & Casing Thread Inspection System takes the guesswork out of inspecting tubing  and casing. The Gagemaker Tubing & Casing Thread Inspection Gages inspect all required thread elements – Insert Identification Thread Form, Crest Diameter & Ovality, Thread Lead, Thread Height, and Thread Taper – all with the precise accuracy required in today’s demanding industry.

JSS® Tubing & Casing Thread Inspection Process

Immediately Improve Your Quality with the Gagemaker’s JSS® Tubing & Casing Inspection Kit

GagemakerTCGroup

  • Optimize performance for tubing and casing
  • Extend longevity of tubing and casing
  • Scrutinize ALL thread elements with precision and accuracy
  • Inspect any types of tubing or casing connectors including API round thread, long thread, short thread, line pipe, and buttress.
  • Protect against mechanical forces such as tension and leakage that tend to destroy tubing & casing
  • Inspect both standard and non-standard connections – all using the same gages.
  • Ensure proper thread interference when pipe and coupling make-up.
  • Pinpoint thread errors that cause expansion of the coupling and compression of the pipe end

 

Insert Identification

Gagemaker 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 API thread forms.

Gagemaker’s new tapered thread insert indentifier easily determines which threading insert the machinist is using.

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

Thread TypeThread FormTaper per Foot/PitchModel
Tubing & CasingRound, 10 Round, & ¾” and 1” Internal and External Buttress¾” and 1”TI-T&C

Inspection Setup

gagemaker-tdwintaper-box-and-usb-transparentTDWIN Taper™ is the only software program dedicated to the manufacturing and inspection of downhole tubular connections. It has everything you need to machine, inspect, and document tubular connection threads. TDWIN Taper™ relies on API and industry standard tables and tolerances. TDWIN Taper™ displays connection drawings, inspection gage information, and setup and inspection reports. Simply, it is a must have for any machine shop.

TDWIN Taper™ is included in any full JSS® Inspection Package.

The program includes the following tapered connections:

Rotary Shouldered Connections

  • Acme Regular
  • Acme Streamline
  • API Numbered Connections
  • API Regular
  • Double Streamline
  • External Flush
  • Full Hole
  • Internal Flush
  • H-90poin
  • Open Hole
  • PAC
  • Slim Hole
  • Slimline H-90
  • Wide Open
  • Xtra Hole

Tubing and Casing Connections

  • NUE Tubing
  • EUE Tubing
  • Short Thread Casing
  • Long Thread Casing
  • Buttress Casing
  • USS Improved Buttress Tubing
  • Line Pipe
  • Special Clearance Couplings
  • SR13 Seal Ring Groove Couplings

System Requirements

  • Microsoft Windows XP or newer
  • USB 2.0 port
  • Internet Connection for first use
  • 1 MB RAM or more (recommended)
  • Screen resolution of 1024 X 768 minimum
  • .Net Framework 2.0 or later installed

Features

  • Follows API Specification 7-2, Dec. 2008, for Rotary Shouldered Connections and API Specification 5B, Oct. 2008, for Tubing and Casing Connections
  • Print product blueprints for manufacturing and inspection
  • Print dimensional reports and inspection sheets
  • Provides gage configurations, setting standards, and contact point information

Gagemaker-TDWIN-Taper-Select

1. Select Connection Type

Gagemaker-TDWIN-Taper-Pick

2. Pick Size & View Drawing

Gagemaker-TDWIN-Taper-Pipe

3. Select Pipe End & Review Drawing

Gagemaker-TDWIN-Taper-Gage

4. Choose Gage Type

Gagemaker-TDWIN-Taper-Element

5. Choose Thread Element

Gagemaker-TDWIN-Taper-Review
6. Review & Print Inspection Report

TDWIN Taper is available in single and multi-user models. Multi-user models may be adjusted to a customer specific number. Contact customer service for more information.

User LicensesDescriptionModel
1Thread Disk for Tapered Threads Software, Single User licenseTDWINTaper
2Thread Disk for Tapered Threads Software, no license agreement required, 2 discs shipped, 20% discountTDWINTaper-2USER
5Thread Disk for Tapered Threads Software, Floating site license agreemen, 5 usersTDWINTaper-LIC5
10Thread Disk for Tapered Threads Software, Floating site license agreemen, 10 usersTDWINTaper-LIC10
15Thread Disk for Tapered Threads Software, Floating site license agreemen, 15 usersTDWINTaper-LIC15

Thread Form Inspection

TC-Thread-Form-Profile-on-PartCorrect thread form is important for a pipe end and coupling to make up properly. Doing a quick check using a Gagemaker thread profile verifies the thread form is correct.

Profile gages can also be used to perform a visual inspection of a thread form for detecting chipped inserts, steps, flat crested threads, stretched threads, wide first threads, or rolled over threads.

Thread Form Profiles

Gagemaker manufactures precision tapered thread profile gages for the quick identification of product thread forms. Specify the connection which is to be inspected when ordering. Special profiles will be quoted upon request.

Connection TypeExternal/InternalTPITPFThread FormDescriptionModel
API 8-Round Casing, Tubing & Drill PipeExternal/Internal8¾”8 RoundExternal/Internal API 8 Round thread form profile gageTP-RTC-8R
API 10-Round TubingExternal/Internal10¾”10 RoundExternal/Internal API 10 Round thread form profile gageTP-RTC-10R
8V API Line PipeExternal/Internal8¾”8 V ThreadExternal/Internal 8V Line Pipe thread form profile gageTP-8V
11½ V API Line PipeExternal/Internal11½¾”11½ V ThreadExternal/Internal 11½V Line Pipe thread form profile gageTP-11-1/2V
4½” - 13⅜” API Buttress CasingExternal5¾”API ButtressExternal 4½” - 13⅜” API Buttress Casing thread form profile gageTP-5BTC75-EXT
4½” - 13⅜” API Buttress CasingInternal5¾”API ButtressInternal 4½” - 13⅜” API Buttress Casing thread form profile gageTP-5BTC75-INT
16” - 20” API Buttress CasingExternal51”API ButtressExternal 16” - 20” API Buttress Casing thread form profile gageTP-5BTC1-EXT
16” - 20” API Buttress CasingInternal51”API ButtressInternal 16” - 20” API Buttress Casing thread form profile gageTP-5BTC1-INT

Overlay Charts are also available. For information, contact Gagemaker directly. Specials are also available. For Special Overlays, please specify the following:

  1. Screen Size
  2. Magnification 20X/50X
  3. Product Form or Profile Template

External Thread Form Inspection

Internal Thread Form Inspection

Thread Lead Inspection

Gagemaker-LG-6001-on-Pipe Gagemaker lead gages use interchangeable contact points to inspect both pin and box threads for a wide variety of API tubing & casing connections. Lead inspection is both an API mandated requirement and an industry wide practice. Defined as the distance between threads as measured on a plane parallel to the centerline of the threaded part, lead variation has a direct effect on stand-off, thread flank engagement, and make-up. Lead error is most commonly generated by manual and CNC lathes not cutting properly. Gagemaker lead gages provide dimensional verification of product print data.

Lead Gages

The lead gage inspects both internal and external thread leads using contact points that seat in the threads of a part. The pitch of the thread determines the diameter of the contact points required for taking measurements.

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 is a three-point gage for inspecting thread lead on API threads. Two fixed contact points at the rear of the gage and one moveable 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 gages to be used on a variety of thread forms. See the contact tab to find your points.

Before inspecting parts, the lead gage must be preset to a nominal predetermined dimension using a lead gage setting standard. Find your lead standard on the setting tab.

Higher resolution and metric indicators are available. More gage models and accessories can be found on our lead gage product page.

 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 Standard

Gagemaker’s precision lead gage setting standards are manufactured in accordance with API Specification 5B. Lead gage standards are used to set the gage prior to the inspection.

ConnectionTPFTPIDescriptionThread Form Model
8 Round & 10 Round¾”8 & 10Lead gage standard for all 8 Round casing, tubing & drill pipe; 10 Round tubingEUE, NUE, LTC, STCLS-1001
11½ Pitch "V" Threads¾”11½Lead gage standard for 11½ Pitch "V" ThreadsLine Pipe & NPTLS-1003
4½” – 13⅜” Buttress¾”5Lead gage standard for ¾” ButtressButtressLS-1005
16” & Larger Buttress1”5Lead gage standard for 1” ButtressButtressLS-1006
USS Improved Buttress¾”8Lead gage standard for USS ButtressUSS Improved ButtressLS-1021
*Line Pipe and NPT contact points and standards are available.
For more lead gage options, contact points, and standards, see our lead gage product page.

API Contact Points for Lead Gages

Gagemaker’s standard ball contact points are manufactured with carbide balls. Both threaded and straight (non-threaded) shanks are available. All of Gagemaker’s inspection gages use threaded shank contact points and are #4-48 UNF. Metric threads are available upon request. Lead gages require two or three contact points. Contact points are sold individually.

Connection TypeTPIPoint DiameterModel
API Tubing & Casing (8 Round)8.072"T072
API Tubing (10 Round) & Line Pipe10.057"T057
Buttress Casing5.062"T062
API Line Pipe5.050"T050
API Line Pipe11½.041"T041
API Line Pipe18.032"T032
API Line Pipe27.021"T021
Extreme Line.105"T105T
*Line Pipe and NPT contact points and standards are available.
For more lead gage options, contact points, and standards, see our lead gage product page.

External Lead Inspection

Internal Lead Inspection

Crest Diameter and Ovality Inspection

Gagemaker-MRP-Crest-Diameter-Gage-on-PartCrest diameter and ovality are one of the most critical measurements of thread inspection governing the strength of the actual thread assembly.  The Gagemaker MRP® crest diameter gages measure the external and internal pitch diameters of tapered threaded connectors, primarily tubing and casing connections.  Any slight variations in diameter are immediately detected with these precision gages granting you total control over your quality.

These versatile gages easily adjust to measure thread diameters ranging from 1½” – 24”. The ability to inspect a range of diameters with one gage, eliminates the need for a room full of ring or plug gages.

MRP® Crest Diameter and Ovality Inspection

The MRP® crest diameter and ovality gages detect variations in crest diameter by the use of a gage shoe that rests on the crest of the threads. Variation in diameter is detected by the indicator readout. These gages must be set to a nominal size with a setting standard or a MIC TRAC.  All of these gages are API approved for use on tubing and casing. Parts and accessories can be found on our crest diameter product page.

Gages for additional size ranges or premium connections can be found on the MRP® crest diameter gage product page. Although, the gages listed below will inspect most tubing & casing threads.

ModelDescriptionExternal/InternalRangeExternal RangeInternal RangeReach
MRP-202Internal Small Crest/Pitch Diameter gageInternal1 - 2½”-1 - 2½”
MRP-1001External Crest Diameter Gage, 4.4” ReachExternal1½” - 4½”1 - 2½”-4.4”
MRP-1002Internal Crest Diameter Gage, 4.4”Internal1½” - 4½”-1½” - 4½”4.4”
MRP-1003External/Internal Crest Diameter Gage, 4.4” Reach, External Range 1½” - 4½”, Internal Range 1½” - 4½”External/Internal1½” - 4½”1½” - 4½”1½” - 4½”4.4”
MRP-2001External Crest Diameter Gage, 4.4” reachExternal2⅜” – 20”2⅜” – 20”-4.4”
MRP-2002Internal Crest Diameter Gage, 4¼” reachInternal2⅜” – 20”-2⅜” – 20”4¼”
MRP-2003External/Internal Pitch Diameter Gage, 4¼” reachExternal/Internal2⅜” – 20”2⅜” – 20”3½” – 20”4¼”

MRP® Rod Style Setting Standards

Box (Left) & Pin (Right) MRP® Rod Standards Rod style setting standards are designed to preset MRP® crest diameter gages for accurate inspection of API threaded connections. Each set of standards consists of two precision ground rods that are ground to lengths in accordance with API Specifications 5B. The rod sets are securely attached together and labeled with the connection size and serial number. The rods set the location of the thread shoe and the distance between shoes for accurate inspection of threaded connections.

MRP® Frame Style Setting Standards

Box (Back) & Pin (Front) MRP® Frame StandardsFrame style setting standards are designed to preset the MRP® crest diameter gages for accurate inspection of API threaded connections. These standards consist of a rigid, non-adjustable steel block precision machined to proper size to tolerances of ±.0003″. Round style standards, smaller than 2⅜”, are available as specials (contact us directly for more information).

Tubing Connections Rod & Frame Standards
Connection SizeRod Standard - BoxRod Standard - PinFrame Standard - BoxFrame Standard - Pin
2⅜” MRP-238EUE-BMRP-238EUE-PFSTD-238E-B2FSTD-238E-P2
2⅞” MRP-278EUE-BMRP-278EUE-PFSTD-278E-B2FSTD-278E-P2
3½”MRP-312EUE-BMRP-312EUE-PFSTD-312E-B2FSTD-312E-P2
4”MRP-4EUE-BMRP-4EUE-PFSTD-4E-B2FSTD-4E-P2
4½”MRP-412EUE-BMRP-412EUE-PFSTD-412E-B2FSTD-412E-P2
Connection SizeRod Standard - BoxRod Standard - PinFrame Standard - BoxFrame Standard - Pin
2⅜” MRP-238NUE-BMRP-238NUE-PFSTD-238N-B2FSTD-238N-P2
2⅞” MRP-278NUE-BMRP-278NUE-PFSTD-278N-B2FSTD-278N-P2
3½”MRP-312NUE-BMRP-312NUE-PFSTD-312N-B2FSTD-312N-P2
4”MRP-4NUE-BMRP-4NUE-PFSTD-4N-B2FSTD-4N-P2
4½”MRP-412NUE-BMRP-412NUE-PFSTD-412N-B2FSTD-412N-P2
Casing Connections Rod & Frame Standards
Connection SizeRod Standard - BoxRod Standard - PinFrame Standard - BoxFrame Standard - Pin
4½”MRP-412B-BMRP-412B-PFSTD-412B-B2FSTD-412B-P2
5” MRP-5B-BMRP-5B-PFSTD-5B-B2FSTD-5B-P2
5½”MRP-512B-BMRP-512B-PFSTD-512B-B2FSTD-512B-P2
6⅝”MRP-658B-BMRP-658B-PFSTD-658B-B2FSTD-658B-P2
7”MRP-7B-BMRP-7B-PFSTD-7B-B2FSTD-7B-P2
7⅝”MRP-758B-BMRP-758B-PFSTD-758B-B2FSTD-758B-P2
8⅝”MRP-858B-BMRP-858B-PFSTD-858B-B2FSTD-858B-P2
9⅝”MRP-958B-BMRP-958B-PFSTD-958B-B2FSTD-958B-P2
10¾”MRP-1034B-BMRP-1034B-PFSTD-1034B-B2FSTD-1034B-P2
11¾”MRP-1134B-BMRP-1134B-PFSTD-1134B-B2FSTD-1134B-P2
13⅜”MRP-1338B-BMRP-1338B-PFSTD-1338B-B2FSTD-1338B-P2
16”MRP-16B-BMRP-16B-PFSTD-16B-B2FSTD-16B-P2
18⅝”MRP-1858B-BMRP-1858B-PFSTD-1858B-B2FSTD-1858B-P2
20”MRP-20B-BMRP-20B-PFSTD-20B-B2FSTD-20B-P2
Connection SizeRod Standard - BoxRod Standard - PinFrame Standard - BoxFrame Standard - Pin
4½”MRP-412L-BMRP-412L-PFSTD-412L-B2FSTD-412L-P2
5” MRP-5L-BMRP-5L-PFSTD-5L-B2FSTD-5L-P2
5½”MRP-512L-BMRP-512L-PFSTD-512L-B2FSTD-512L-P2
6”MRP-6L-BMRP-6L-PFSTD-6L-B2FSTD-6L-P2
6⅝”MRP-658L-BMRP-658L-PFSTD-658L-B2FSTD-658L-P2
7”MRP-7L-BMRP-7L-PFSTD-7L-B2FSTD-7L-P2
7⅝”MRP-758L-BMRP-758L-PFSTD-758L-B2FSTD-758L-P2
8⅝”MRP-858L-BMRP-858L-PFSTD-858L-B2FSTD-858L-P2
9⅝”MRP-958L-B>P110 or MRP-958L-BMRP-958L-PFSTD-958L-B2>P110 or FSTD-958L-B2FSTD-958L-P2
20”MRP-20L-B>JK55 or MRP-20L-BMRP-20L-PFSTD-20L-B2>JK55 or FSTD-20L-B2FSTD-20L-P2
Connection SizeRod Standard - BoxRod Standard - PinFrame Standard - BoxFrame Standard - Pin
4½”– 9.50# MRP-412S-9-BMRP-412B-9-PFSTD-412B-9-B2FSTD-412B-9-P2
4½” – OtherMRP-412S-O-BMRP-412B-O-PFSTD-412B-O-B2FSTD-412B-O-P2
5” – 11.50# MRP-5S-BMRP-5S-PFSTD-5S-B2FSTD-5S-P2
5” – OtherMRP-5S-O-BMRP-5S-O-PFSTD-5S-O-B2FSTD-5S-O-P2
5½”MRP-512S-BMRP-512S-PFSTD-512S-B2FSTD-512S-P2
6⅝”MRP-658S-BMRP-658S-PFSTD-658S-B2FSTD-658S-P2
7” – 17.00# MRP-7S-17-BMRP-7S-17-PFSTD-7S-17-B2FSTD-7S-17-P2
7” – OtherMRP-7S-O-BMRP-7S-O-PFSTD-7S-O-B2FSTD-7S-O-P2
7⅝”MRP-758S-BMRP-758S-PFSTD-758S-B2FSTD-758S-P2
7⅝”MRP-758S-BMRP-758S-PFSTD-758S-B2FSTD-758S-P2
8⅝” - 24.00#MRP-858S-24-BMRP-858S-24-PFSTD-858S-24-B2FSTD-858S-24-P2
8⅝” - OtherMRP-858S-O-BMRP-858S-O-PFSTD-858S-O-B2FSTD-858S-O-P2
9⅝”MRP-958S-B>P110 or MRP-958S-BMRP-958S-PFSTD-958S-B2>P110 or FSTD-958S-B2FSTD-958S-P2
10¾” - 32.75#MRP-1034S-32-BMRP-1034S-32-PFSTD-1034S-32-B2FSTD-1034S-32-P2
10¾” - OtherMRP-1034S-O-B>P110 or MRP-1034S-O-BMRP-1034S-O-PFSTD-1034S-O-B2>P110 or FSTD-1034S-O-B2FSTD-1034S-O-P2
11¾”MRP-1134S-B>P110 or MRP-1134S-BMRP-1134S-PFSTD-1134S -B2>P110 or FSTD-1134S-B2FSTD-1134S-P2
13⅜”MRP-1338S-B>P110 or MRP-1338S-BMRP-1338S-PFSTD-1338S-B2>P110 or FSTD-1338S-B2FSTD-1338S-P2
16”MRP-16S-BMRP-16S-PFSTD-16S-B2FSTD-16S-P2
18⅝”MRP-1858S-BMRP-1858S-PFSTD-1858S-B2FSTD-1858S-P2
20”MRP-20S-B>JK55 or MRP-20S-BMRP-20S-PFSTD-20S-B2>JK55 or FSTD-20S-B2FSTD-20S-P2

Step style standards are also available. Please see our MRP product page for more information.
If you are regularly inspecting multiple thread types and sizes, we recommend incorporating our MIC TRAC Gage Setting System into your quality program.

External Crest Diameter and Ovality Inspection

Internal Crest Diameter and Ovality Inspection

Thread Taper Inspection

Gagemaker-ET-7003-on-PartTapered threads are a signature feature of API Tubing & Casing connections. Measuring thread taper is not only an industry wide practice, it is an API Specification 5B mandated inspection. During the manufacturing process, taper must be accurately measured and quantified to stay within the required specification limits. When subjected to a service load, taper error on threaded tubing and casing connections can lead to galling, improper fit, and reduced performance.

For the most accurate taper inspection, use Gagemaker taper gages to verify both the threaded pin and coupling meet all customer and industry requirements. Gagemaker’s taper gages are the best choice for measuring and controlling both pin and box taper values.

External Taper

Gagemaker’s external taper gages inspect variation in external thread taper. Unless specified otherwise, external taper gages are shipped with .072” diameter contact points (T072) as standard. Refer to the points tab for the proper contact point for your particular connection. Each gage requires two contact points. Higher resolution indicators are available.

This set of gages will inspect taper most external tubing and casing connections. Gages for larger diameter connections can be found on our taper gage product page.

ModelDescriptionRangeIndicator
Travel
Indicator
Resolution
ET-7001External Taper Gage, ½” travel0 – 6” (0 mm – 152.4 mm)½”.001”
ET-7002External Taper Gage, ½" travel0 - 10" (0 - 254 mm)½”.001”
ET-7003External Taper Gage, 1" travel0 - 10" (0 - 254 mm)1".001”
ET-7004External Taper Gage, ½" travel0 -16" (0 – 406.4 mm)½”.001”
ET-7006External Taper Gage, ½" travel16” - 24” (406.4 mm – 609.6 mm)½”.001”
Internal Taper

Gagemaker’s internal taper gages measure variation in thread taper. Taper gages are shipped with our standard set of .072” diameter contact points (T072), unless specified otherwise or requested. Refer to the points tab for the proper contact point for your particular connection. Each internal gage requires two contact points. Higher resolution indicators are available.

This set of gages will inspect taper most internal tubing and casing connections. Gages for larger diameter connections can be found on our taper gage product page.

RangeModelDescriptionDepthIndicator
Travel
Indicator
Resolution
1½” – 9” (38.1 mm – 228.6 mm)IT-6000Internal Taper Gage4¼”1”.001”
5” - 13⅜” (127 - 339.725 mm)IT-6001Internal Taper GageAny½”.001”

API Contact Points for Taper Gages

Gagemaker’s standard ball contact points are manufactured with carbide balls. All of Gagemaker’s inspection gages use threaded shank contact points. Threaded shanks are #4-48 UNF. Metric threads are available upon request. Taper gages require two contact points. Additional contact points are available on the contact point product page.

Connection TypeTPIPoint DiameterModel
Extreme Line.105"T105T
Buttress Casing5.090"T090
API Tubing & Casing (8 Round)8.072"T072
API Tubing (10 Round) & Line Pipe10.057"T057
API Line Pipe5.050"T050
API Line Pipe11½.041"T041
API Line Pipe18.032"T032
API Line Pipe27.021"T021

External Taper Inspection

Internal Taper Inspection (1½” – 9”)

Large Diameter Internal Taper Inspection (5”+ )

Thread Height Inspection

Gagemaker-External-Thread-Height-on-Part2Proper Thread Height maximizes the performance of the connection.  Thread height inspection is an API requirement.  Gagemaker thread height gages inspect external or internal thread height for a variety of thread forms.  A shallow thread height may allow the connection to pull apart under stress.

External Thread Height

Gagemaker manufactures many models of external thread height gages. Specify the type of thread when ordering. One contact point based on thread type is included, please click on the contact points tab. Standards may be required, please see the Setting tab for options. Metric and higher resolution indicators are also available, see our thread height gage product page for more options.

ConnectionModelDescriptionMin. BoreIndicator TravelIndicator ResolutionDial TypeIncluded Contact Point*Standard required
USS Improved ButtressTH-3000-USSExternal Thread Height Gage for USS Improved Buttress, 0-25-0, T500C-USS2.950”.250”.001”0-25-0, BalancedTBRYes
¾” TPF ButtressTH-3002B**External Thread Height Gage, 0-25-0, T0722.930”.250”.0005”0-25-0, BalancedT072Yes
1” TPF ButtressTH-3003BExternal Thread Height Gage with Step Base, 0-25-0, T0722.930”.250”.0005”0-25-0, BalancedT072Yes
8 RoundTH-3001RExternal Thread Height Gage, 0-100, T5013.400”.185”.001”0-100 ContinuousT501No
8 Round & 10 RoundTH-3002RExternal Thread Height Gage, 0-50-0, T5013.400”.162”.001”0-50-0, BalancedT501Yes
Line Pipe, Tool JointsTH-3002VExternal Thread Height Gage, 0-50-0, T500C2.930”.250”.001”0-50-0, BalancedT500CYes
Internal Thread Height

Gagemaker also manufactures several models of internal thread height gages. Please specify the type of thread when ordering. One contact point based on thread type is included. Standards may be required, please see the Setting tab for options. Metric and higher resolution indicators are also available, see our thread height gage product page for more options.

ConnectionModelDescriptionMin. BoreIndicator TravelIndicator ResolutionDial TypeIncluded Contact Point*Standard required
Line PipeTH-3004Internal Thread Height Gage, 0-25-0, T500C1.50”.250”.0005”0-25-0, BalancedT500CYes
8 Round & 10 RoundTH-3006Internal Thread Height Gage, 0-25-0, T502 and T5031.50”.105”.0005”0-25-0, BalancedT502 and T503Yes
8 Round & 10 RoundTH-3008Internal Thread Height Gage, 0-25-0, T502 and T5031.575"”.094”.0005”0-25-0, BalancedT502 and T503Yes
¾” TPF ButtressTH-3009Internal Thread Height Gage, 0-25-0, T0721.50”.250”.0005”0-25-0, BalancedT072Yes
USS Improved ButtressTH-3010-USSInternal Thread Height, T500C-USS1.50”.250”.001”0-25-0, BalancedT500C-USSYes
¾” - 2" NPT, AMTTH-3012Internal Thread Height Gage, 0-25-0.750".090”.0005”0-25-0, BalancedT500CYes
External Thread Shave/Addendum

Thread Addendum (or previously known as Thread Shave) is simply the distance from the thread crest to the pitch line. The addendum is a shorter distance than the thread height. Addendum is typically only measured and controlled on tubing and casing 60° V threads (8 Round, 10 Round, and Line Pipe). For more info, read our May 2013 newsletter article on thread addendum.
Gagemaker manufactures many models of external thread height gages

ConnectionModelDescriptionMin. BoreIndicator TravelIndicator ResolutionDial TypeIncluded Contact Point*Standard required
8 Round & 10 RoundTH-3002BExternal Thread Shave/Addendum Gage, 0-25-0, T0722.930”.250”.0005”0-25-0, BalancedT072THS-1014S
8 Round & 10 RoundTH-3002B-1External Thread Shave/Addendum Gage, 0-10-0, .0001” Resolution Indicator, T0723.730”.500”.0001”0-10-0, BalancedT072THS-1014S
8 Round & 10 RoundTH-3002B-MExternal Thread Shave/Addendum Gage, 0-50-0, Metric Indicator, T0722.930”5 mm.01 mm0-50-0, BalancedT072THS-1014S

Thread Height Gage Standards

Gagemaker manufactures API mandated precision setting standards for presetting thread height gages. Please specify the type of thread when ordering.

ConnectionTPFDescriptionThread Form Model
8 Round & 10 Round¾”Thread Height Standard, 8 & 10 RoundEUE, NUE, LTC, STCTHS-1014
8 Round & 10 Round¾”Thread Addendum (Shave) StandardEUE, NUE, LTC, STCTHS-1014S
8 & 11½ Pitch "V" Threads¾”Thread Height Standard, 8 & 11½ Pitch "V" ThreadsLine Pipe & NPTTHS-1015
13⅜” & Smaller Buttress¾”Thread Height Standard, ¾” ButtressButtressTHS-1017
16” & Larger Buttress1”Thread Height Standard, 1” ButtressButtressTHS-1018
USS Improved Buttress¾”Thread Height Standard, USS ButtressUSS Improved ButtressTHS-10409

Thread Height Gage Contact Points

The contact points are interchangeable between gages. Contact point diameters are manufactured to tolerances of +.0002”. Thread height gages require one contact point. Additional contact points for threads not listed may be viewed on our contact points page.

ConnectionThread FormBall DiameterDescriptionGageModel
ButtressButtress (¾” & 1”).072”Thread height contact point for buttress threadsTH-3002B, TH-3002B-1, TH-3002B-M, TH-3003B, TH-3003B-1, TH-3009T072
8 RoundLTC, STC, EUE, & NUE.072”Thread shave/addendum contact point for 8 RoundTH-3002B, TH-3002B-1, TH-3002B-MT072
10 RoundEUE & NUE.057”Thread shave/addendum contact point for 10 RoundTH-3002B, TH-3002B-1, TH-3002B-MT057
USS Improved ButtressUSS Improved Buttress-Narrow cone contact point for USS Improved ButtressTH-3000-USSTBR
8 Round & 10 RoundLTC, STC, EUE, & NUE-50° cone contact point, "V" Threads for TH-3001R, TH-3001R-1, TH-3002R, and TH-3002R-1TH-3001R, TH-3001R-1, TH-3002R, TH-3002R-1T501
8 Round & 10 RoundLTC, STC, EUE, & NUE-Self-centering sleeve for T501 & T503 contact pointsTH-3001R, TH-3001R-1, TH-3002R, TH-3002R-1, TH-3006T502
8 Round, 10 Round, "V" ThreadsLTC, STC, EUE, NUE, & Line Pipe-50° cone contact point, "V" Threads for TH-3006TH-3006T503
Extreme LineExtreme Line-.063 R Extreme Line contact pointSpecialE-Line

External Thread Height Inspection

Internal Thread Height Inspection

External Thread Addendum (Shave) Inspection

 

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