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TRU-POS - Tapped Hole Location Gages - Straight & Tapered

Starting at $100.00
  • The Most Accurate and Efficient Way to Measure the True Position of a Tapped Hole
  • An essential complement of any CMM Package, TRU-POS™ Locators are the only correct way to determine the true position of tapped holes

    Accurate:

    • Finely ground threads are sized to .0001" (.0025mm) under a Class 2B Go thread gage, with a -.0003" (.0075mm) tolerance
    • The diameter is concentric to the thread pitch diameter .0002" TIR (.005mm)
    • Certificate of Calibration is available to provide documentation of actual tolerance

    Two Styles - designed for tight spaces

    • Straight-thread design is for seating on a flat surface
    • The tapered style, for irregular or cast surfaces, allows for the locator to be inserted and tightened on the tapered pitch diameter

Some items may have Limited Quantity or may no longer be available and will therefore require a special quote

Additional Information +
Click here for METRIC sizes
THREAD SIZE:
STYLE:
Item No. THREAD SIZE STYLE Our Price QTY
1TP0080 0 (.060")-80UNF Straight Thread - Seats on Flat Surfaces $135.00
1TP0080-T 0 (.060")-80UNF Tapered Thread - Seats on Irregular or Cast Surfaces $150.00
1TP0164 1 (.073")-64UNC Straight Thread - Seats on Flat Surfaces $130.00
1TP0172 1 (.073")-72UNF Straight Thread - Seats on Flat Surfaces $140.00
1TP0172-T 1 (.073")-72UNF Tapered Thread - Seats on Irregular or Cast Surfaces $170.00
1TP0256 2 (.086")-56UNC Straight Thread - Seats on Flat Surfaces $120.00
1TP0256-T 2 (.086")-56UNC Tapered Thread - Seats on Irregular or Cast Surfaces $125.00
1TP0264 2 (.086")-64UNF Straight Thread - Seats on Flat Surfaces $120.00
1TP0348 3 (.099")-48UNC Straight Thread - Seats on Flat Surfaces $120.00
1TP0348-T 3 (.099")-48UNC Tapered Thread - Seats on Irregular or Cast Surfaces $170.00
1TP0356 3 (0.99")-56UNF Straight Thread - Seats on Flat Surfaces $120.00
1TP0440 4 (.112")-40UNC Straight Thread - Seats on Flat Surfaces $100.00
1TP0440-T 4 (.112")-40UNC Tapered Thread - Seats on Irregular or Cast Surfaces $110.00
1TP0448 4 (.112")-48UNF Straight Thread - Seats on Flat Surfaces $110.00
1TP0448-T 4 (.112")-48UNF Tapered Thread - Seats on Irregular or Cast Surfaces $170.00
1TP0540 5 (.125")-40UNC Straight Thread - Seats on Flat Surfaces $110.00
1TP0544 5 (.125")-44UNF Straight Thread - Seats on Flat Surfaces $110.00
1TP0544-T 5 (.125")-44UNF Tapered Thread - Seats on Irregular or Cast Surfaces $170.00
1TP0632 6 (.138")-32UNC Straight Thread - Seats on Flat Surfaces $100.00
1TP0632-T 6 (.138")-32UNC Tapered Thread - Seats on Irregular or Cast Surfaces $110.00
1TP0640 6 (.138")-40UNF Straight Thread - Seats on Flat Surfaces $110.00
1TP0640-T 6 (.138")-40UNF Tapered Thread - Seats on Irregular or Cast Surfaces $120.00
1TP0832 8 (.190")-32UNC Straight Thread - Seats on Flat Surfaces $100.00
1TP0832-T 8 (.190")-32UNC Tapered Thread - Seats on Irregular or Cast Surfaces $110.00
1TP0836 8 (.190")-36UNF Straight Thread - Seats on Flat Surfaces $105.00
1TP1024 10 (.190")-24UNC Straight Thread - Seats on Flat Surfaces $105.00
1TP1024-T 10 (.190")-24UNC Tapered Thread - Seats on Irregular or Cast Surfaces $120.00
1TP1032 10 (.190")-32UNF Straight Thread - Seats on Flat Surfaces $100.00
1TP1032-T 10 (.190")-32UNF Tapered Thread - Seats on Irregular or Cast Surfaces $110.00
1TP1224 12 (.216")-24UNC Straight Thread - Seats on Flat Surfaces $110.00
1TP1228 12 (.216")-28UNF Straight Thread - Seats on Flat Surfaces $110.00
1TP1228-T 12 (.216")-28UNF Tapered Thread - Seats on Irregular or Cast Surfaces $120.00
1TP2520 1/4 (.250")-20UNC Straight Thread - Seats on Flat Surfaces $100.00
1TP2520-T 1/4 (.250")-20UNC Tapered Thread - Seats on Irregular or Cast Surfaces $110.00
1TP2528 1/4 (.250")-28UNF Straight Thread - Seats on Flat Surfaces $100.00
1TP2528-T 1/4 (.250")-28UNF Tapered Thread - Seats on Irregular or Cast Surfaces $120.00
1TP3118 5/16 (.3125")-18UNC Straight Thread - Seats on Flat Surfaces $100.00
1TP3118-T 5/16 (.3125")-18UNC Tapered Thread - Seats on Irregular or Cast Surfaces $120.00
1TP3124 5/16 (.3125")-24UNF Straight Thread - Seats on Flat Surfaces $100.00
1TP3124-T 5/16 (.3125")-24UNF Tapered Thread - Seats on Irregular or Cast Surfaces $120.00
1TP3132 5/16 (.3125")-32UNEF Straight Thread - Seats on Flat Surfaces $160.00
1TP3716 3/8 (.375)-16UNC Straight Thread - Seats on Flat Surfaces $100.00
1TP3716-T 3/8 (.375)-16UNC Tapered Thread - Seats on Irregular or Cast Surfaces $120.00
1TP3724 3/8 (.375)-24UNF Straight Thread - Seats on Flat Surfaces $100.00
1TP3724-T 3/8 (.375)-24UNF Tapered Thread - Seats on Irregular or Cast Surfaces $120.00
1TP3732 3/8 (.375)-32UNEF Straight Thread - Seats on Flat Surfaces $130.00
1TP3732-T 3/8 (.375)-32UNEF Tapered Thread - Seats on Irregular or Cast Surfaces $145.00
1TP4314 7/16 (.4375")-14UNC Straight Thread - Seats on Flat Surfaces $105.00
1TP4314-T 7/16 (.4375")-14UNC Tapered Thread - Seats on Irregular or Cast Surfaces $120.00
1TP4320 7/16 (.4375")-20UNF Straight Thread - Seats on Flat Surfaces $100.00
1TP4320-T 7/16 (.4375")-20UNF Tapered Thread - Seats on Irregular or Cast Surfaces $130.00
1TP5013 1/2 (.500")-13UNC Straight Thread - Seats on Flat Surfaces $105.00
1TP5013-T 1/2 (.500")-13UNC Tapered Thread - Seats on Irregular or Cast Surfaces $130.00
1TP5020 1/2 (.500")-20UNF Straight Thread - Seats on Flat Surfaces $105.00
1TP5020-T 1/2 (.500")-20UNF Tapered Thread - Seats on Irregular or Cast Surfaces $130.00
1TP5028 1/2 (.500")-28UNEF Straight Thread - Seats on Flat Surfaces $200.00
1TP5612 9/16 (.5625")-12UNC Straight Thread - Seats on Flat Surfaces $115.00
1TP5612-T 9/16 (.5625")-12UNC Tapered Thread - Seats on Irregular or Cast Surfaces $150.00
1TP5618 9/16 (.5625")-18UNF Straight Thread - Seats on Flat Surfaces $110.00
1TP5618-T 9/16 (.5625")-18UNF Tapered Thread - Seats on Irregular or Cast Surfaces $150.00
1TP5624 9/16 (.5625")-24UNEF Straight Thread - Seats on Flat Surfaces $120.00
1TP5624-T 9/16 (.5625")-24UNEF Tapered Thread - Seats on Irregular or Cast Surfaces $250.00
1TP6211 5/8 (.625")-11UNC Straight Thread - Seats on Flat Surfaces $115.00
1TP6218 5/8 (.625")-18UNF Straight Thread - Seats on Flat Surfaces $115.00
1TP6218-T 5/8 (.625")-18UNF Tapered Thread - Seats on Irregular or Cast Surfaces $180.00
1TP6224 5/8 (.625")-24UNEF Straight Thread - Seats on Flat Surfaces $145.00
1TP6224-T 5/8 (.625")-24UNEF Tapered Thread - Seats on Irregular or Cast Surfaces $180.00
1TP6811 11/16 (.6875")-11UN Straight Thread - Seats on Flat Surfaces $160.00
1TP6824 11/16 (.6875")-24UNEF Straight Thread - Seats on Flat Surfaces $130.00
1TP6832 11/16 (.6875")-32UN Straight Thread - Seats on Flat Surfaces $130.00
1TP7510 3/4 (.750")-10UNC Straight Thread - Seats on Flat Surfaces $120.00
1TP7510-T 3/4 (.750")-10UNC Tapered Thread - Seats on Irregular or Cast Surfaces $200.00
1TP7516 3/4 (.750")-16UNF Straight Thread - Seats on Flat Surfaces $120.00
1TP7516-T 3/4 (.750")-16UNF Tapered Thread - Seats on Irregular or Cast Surfaces $200.00
1TP7520 3/4 (.750")-20UNEF Straight Thread - Seats on Flat Surfaces $125.00
1TP8120 13/16 (.8125")-20UNEF Straight Thread - Seats on Flat Surfaces $200.00
1TP8120-T 13/16 (.8125")-20UNEF Tapered Thread - Seats on Irregular or Cast Surfaces $260.00
1TP8709 7/8 (.875")-9UNC Straight Thread - Seats on Flat Surfaces $145.00
1TP8714 7/8 (.875")-14UNF Straight Thread - Seats on Flat Surfaces $145.00
1TP8720 7/8 (.875")-20UNEF Straight Thread - Seats on Flat Surfaces $150.00
1TP8720-T 7/8 (.875")-20UNEF Tapered Thread - Seats on Irregular or Cast Surfaces $300.00
1TP10008 1"-8UNC Straight Thread - Seats on Flat Surfaces $185.00
1TP10012 1"-12UNF Straight Thread - Seats on Flat Surfaces $185.00
1TP10012-T 1"-12UNF Tapered Thread - Seats on Irregular or Cast Surfaces $300.00
1TP10020 1"-20UNEF Straight Thread - Seats on Flat Surfaces $240.00
1TP1.0618 1-1/16-18UNEF Straight Thread - Seats on Flat Surfaces $305.00
1TP1.0618-T 1-1/16-18UNEF Tapered Thread - Seats on Irregular or Cast Surfaces $425.00
1TP1.1207 1-1/8-7UNC Straight Thread - Seats on Flat Surfaces $330.00
1TP1.1212 1-1/8-12UNF Straight Thread - Seats on Flat Surfaces $350.00
1TP1.1212-T 1-1/8-12UNF Tapered Thread - Seats on Irregular or Cast Surfaces $450.00
1TP1.1218 1-1/8-18UNEF Straight Thread - Seats on Flat Surfaces $325.00
1TP1.1818 1-3/16-18UNEF Straight Thread - Seats on Flat Surfaces $365.00
1TP1.2507 1-1/4-7UNC Straight Thread - Seats on Flat Surfaces $400.00
1TP1.2512 1-1/4-12UNF Straight Thread - Seats on Flat Surfaces $400.00
1TP1.2512-T 1-1/4-12UNF Tapered Thread - Seats on Irregular or Cast Surfaces $450.00
1TP1.2518 1-1/4-18UNEF Straight Thread - Seats on Flat Surfaces $400.00
1TP1.3112 1-5/16-12UN Straight Thread - Seats on Flat Surfaces $380.00
1TP1.3118 1-15/16-18UNEF Straight Thread - Seats on Flat Surfaces $380.00
1TP1.3706 1-3/8-6UNC Straight Thread - Seats on Flat Surfaces $400.00
1TP1.3712 1-3/8-12UNF Straight Thread - Seats on Flat Surfaces $380.00
1TP1.3718 1-3/8-18UNEF Straight Thread - Seats on Flat Surfaces $420.00
1TP1.4318 1-7/6-18UNEF Straight Thread - Seats on Flat Surfaces $400.00
1TP1.5006 1-1/2-6UNC Straight Thread - Seats on Flat Surfaces $400.00
1TP1.5012 1-1/2-12UNF Straight Thread - Seats on Flat Surfaces $400.00
1TP1.5018 1-1/2-18UNEF Straight Thread - Seats on Flat Surfaces $400.00

Downloads:

Spec Sheet

Features:

  • ANSI specifies, "Each tolerance of orientation or position and datum reference specified for a screw thread applies to the axis of the thread derived from the pitch cylinder.” 
  • Complies with ANSI Y14.5M-1994 and meets correct geometric tolerances every time.

Frequently Asked Questions

Why use a locator to determine the location of a threaded hole?

Inspection methods must ensure that your parts meet or exceed specifications. Checking the hole location with gage pin, steel ball, a screw with a machined head, or a probe tip is inaccurate since the pitch diameter is not referenced per ANSI Spec Y14.5M-1982.

If my threaded hole is oversize will Tru-Pos function properly?

Yes! When the locator is seated, the upward force exerted against the thread flank causes the locator to position itself on the centerline of the tapped hole.

 Are Tru-Pos locators difficult to use?

NO! Tru-Pos locators are ground .0001" under your go-gage size for easy finger tight insertion, thereby improving productivity while eliminating sore fingers. The knurled surface is placed at the top of the locator which makes it easier to grip. Tru-Pos is ground to the base of the locator providing a more accurate measurement of the tapped hole, since the CMM probe will be closer to the surface.

Why aren't these locators split like other designs?

Material fatigue, excessive installation force, etc./ play a vital role in the repeatability of locating gages. Tru-Pos was designed to provide a reliable method in which repeatability is constant. Competitors who offer split designs do not offer the split design throughout their range of thread sizes.

There are 2 designs: Square shoulder and tapered. Why?

Tru-Pos was originally designed with a square shoulder to be used where the gage could be seated against a clean and square surface. In many applications such as castings or irregular surfaces etc. the gage cannot be properly seated, Tapered gages were designed for this condition. 

Are special sizes or configurations available?

Special sizes and configurations can be made to meet your unique requirements.
Simply call for a quote.

Are Certifications available?

Yes! Certificates of Compliance or Certificates of Calibration are available. Please specify at time of order.

I already own Tru-Pos locators. Is a recalibration service offered?

Yes! Upon return to the factory, they can provide a certificate of calibration to verify the gage is within specifications.  We cannot however, repair gages that are worn, nicked, damaged etc.

Are HeliCoil locators designed for use before or after HeliCoil insertion?

The HeliCoil series of locators are designed to be used before the HeliCoil insertion.