Thread Check Inc. Catalog 2025

STANDARD THREAD GAGES

Order No. Go Member

Order No. No Go Member

Price

Order No. Go/No Go Set

Price Gage Length Go

Gage Length No Go

PD Go

PD No Go

Handle #

Inch

(.250) 1/4-28 UNF Taperlock Plug 2B 1/4-28-TPG-2B GO 1/4-28-TPG-2B NGO $53.00 1/4-28-TPG-2B-D/E $119.00 1/2" 5/16" .2268 .2311 1 Taperlock Plug 3B 1/4-28-TPG-3B GO 1/4-28-TPG-3B NGO 53.00 1/4-28-TPG-3B-D/E 119.00 1/2" 5/16" .2268 .2300 1 Reversible Plug 2B 1/4-28-TPG-2B GO-REV 1/4-28-TPG-2B NGO-REV 74.00 1/4-28-TPG-2B-D/E-REV 164.00 7/8" 7/8" .2268 .2311 3W Reversible Plug 3B 1/4-28-TPG-3B GO-REV 1/4-28-TPG-3B NGO-REV 74.00 1/4-28-TPG-3B-D/E-REV 164.00 7/8" 7/8" .2268 .2300 3W STI Plug 2B STI-1/4-28-2B-GO STI-1/4-28-2B-NGO 74.00 STI-1/4-28-2B-D/E 161.00 1/2" 5/16" .2732 .2765 1 STI Plug 3B STI-1/4-28-3B-GO STI-1/4-28-3B-NGO 74.00 STI-1/4-28-3B-D/E 161.00 1/2" 5/16" .2732 .2754 1 Ring 2A 1/4-28-TRG-2A GO 1/4-28-TRG-2A NGO 141.00 1/4-28-TRG-2A-SET 282.00 11/32" 11/32" .2258 .2225 2T Ring 3A 1/4-28-TRG-3A GO 1/4-28-TRG-3A NGO 141.00 1/4-28-TRG-3A-SET 282.00 11/32" 11/32" .2268 .2243 2T Set Plug 2A 1/4-28-TSP-2A GO 1/4-28-TSP-2A NGO 113.00 1/4-28-TSP-2A-D/E 239.00 3/4" 3/4" .2258 .2225 1 Set Plug 3A 1/4-28-TSP-3A GO 1/4-28-TSP-3A NGO 113.00 1/4-28-TSP-3A-D/E 239.00 3/4" 3/4" .2268 .2243 1 (.250) 1/4-32 UNEF Taperlock Plug 2B 1/4-32-TPG-2B GO 1/4-32-TPG-2B NGO 90.00 1/4-32-TPG-2B-D/E 193.00 1/2" 5/16" .2297 .2339 1 Taperlock Plug 3B 1/4-32-TPG-3B GO 1/4-32-TPG-3B NGO 90.00 1/4-32-TPG-3B-D/E 193.00 1/2" 5/16" .2297 .2328 1 Reversible Plug 2B 1/4-32-TPG-2B GO-REV 1/4-32-TPG-2B NGO-REV 109.00 1/4-32-TPG-2B-D/E-REV 234.00 7/8" 7/8" .2297 .2339 3W Reversible Plug 3B 1/4-32-TPG-3B GO-REV 1/4-32-TPG-3B NGO-REV 109.00 1/4-32-TPG-3B-D/E-REV 234.00 7/8" 7/8" .2297 .2328 3W Ring 2A 1/4-32-TRG-2A GO 1/4-32-TRG-2A NGO 191.00 1/4-32-TRG-2A-SET 382.00 11/32" 11/32" .2287 .2255 2T Ring 3A 1/4-32-TRG-3A GO 1/4-32-TRG-3A NGO 191.00 1/4-32-TRG-3A-SET 382.00 11/32" 11/32" .2297 .2273 2T Set Plug 2A 1/4-32-TSP-2A GO 1/4-32-TSP-2A NGO 154.00 1/4-32-TSP-2A-D/E 321.00 3/4" 3/4" .2287 .2255 1 Set Plug 3A 1/4-32-TSP-3A GO 1/4-32-TSP-3A NGO 154.00 1/4-32-TSP-3A-D/E 32.00 3/4" 3/4" .2297 .2273 1 (.3125) 5/16-18 UNC Taperlock Plug 2B 5/16-18-TPG-2B GO 5/16-18-TPG-2B NGO 53.00 5/16-18-TPG-2B-D/E 119.00 1/2" 5/16" .2764 .2817 1 Taperlock Plug 3B 5/16-18-TPG-3B GO 5/16-18-TPG-3B NGO 53.00 5/16-18-TPG-3B-D/E 119.00 1/2" 5/16" .2764 .2803 1 Reversible Plug 2B 5/16-18-TPG-2B GO-REV 5/16-18-TPG-2B NGO-REV 74.00 5/16-18-TPG-2B-D/E-REV 164.00 1" 1" .2764 .2817 4W Reversible Plug 3B 5/16-18-TPG-3B GO-REV 5/16-18-TPG-3B NGO-REV 74.00 5/16-18-TPG-3B-D/E-REV 164.00 1" 1" .2764 .2803 4W STI Plug 2B STI-5/16-18-2B-GO STI-5/16-18-2B-NGO 74.00 STI-5/16-18-2B-D/E 161.00 3/4" 3/8" .3486 .3529 2 STI Plug 3B STI-5/16-18-3B-GO STI-5/16-18-3B-NGO 74.00 STI-5/16-18-3B-D/E 161.00 3/4" 3/8" .3486 .3515 2 Ring 2A 5/16-18-TRG-2A GO 5/16-18-TRG-2A NGO 141.00 5/16-18-TRG-2A-SET 282.00 11/32" 11/32" .2752 .2712 2T Ring 3A 5/16-18-TRG-3A GO 5/16-18-TRG-3A NGO 141.00 5/16-18-TRG-3A-SET 282.00 11/32" 11/32" .2764 .2734 2T Set Plug 2A 5/16-18-TSP-2A GO 5/16-18-TSP-2A NGO 113.00 5/16-18-TSP-2A-D/E 239.00 3/4" 3/4" .2752 .2712 1 Set Plug 3A 5/16-18-TSP-3A GO 5/16-18-TSP-3A NGO 113.00 5/16-18-TSP-3A-D/E 239.00 3/4" 3/4" .2764 .2734 1 (.3125) 5/16-20 UN Taperlock Plug 2B 5/16-20-TPG-2B GO 5/16-20-TPG-2B NGO 131.00 5/16-20-TPG-2B-D/E 275.00 1/2" 5/16" .2800 .2852 1 Taperlock Plug 3B 5/16-20-TPG-3B GO 5/16-20-TPG-3B NGO 131.00 5/16-20-TPG-3B-D/E 275.00 1/2" 5/16" .2800 .2839 1 Ring 2A 5/16-20-TRG-2A GO 5/16-20-TRG-2A NGO 334.00 5/16-20-TRG-2A-SET 678.00 1" 1" .2788 .2748 4W Ring 3A 5/16-20-TRG-3A GO 5/16-20-TRG-3A NGO 334.00 5/16-20-TRG-3A-SET 678.00 1" 1" .2800 .2770 4W Set Plug 2A 5/16-20-TSP-2A GO 5/16-20-TSP-2A NGO 191.00 5/16-20-TSP-2A-D/E 395.00 3/4" 3/4" .2788 .2748 1 Set Plug 3A 5/16-20-TSP-3A GO 5/16-20-TSP-3A NGO 191.00 5/16-20-TSP-3A-D/E 395.00 3/4" 3/4" .2800 .2770 1

Rev 3

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