Helical Coil Taperlock Steel Gages (STI)

HELICAL COIL TAPERLOCK STEEL GAGES (STI) X TOLERANCE
SizeThread LengthGO MemberNOT GO MemberHandle
GONOT GOClass 2B and 3BClass 2B2B DE in HandleClass 3B3B DE in Handle
2-56 UNC5/167/32H008656GKH0086562BNKH0086562BSH0086563BNKH0086563BS0
4-40 UNC5/167/32H011240GKH0112402BNKH0112402BSH0112403BNKH0112403BS0
4-48 UNF5/167/32H011248GKH0112482BNKH0112482BSH0112483BNKH0112483BS0
5-40 UNC5/167/32H012540GKH0125402BNKH0125402BSH0125403BNKH0125403BS0
6-32 UNC13/327/32H013832GKH0132322BNKH0132322BSH0138323BNKH0138323BS0
6-40 UNF13/327/32H013840GKH0138402BNKH0138402BSH0138403BNKH0138403BS0
8-32 UNC13/327/32H016432GKH0164322BNKH0164322BSH0164323BNKG0164323BS0
8-36 UNF13/327/32H016436GKH0164362BNKH0164362BSH0164363BNKH0164363BS0
10-24 UNC13/327/32H019024GKH0190242BNKH0190242BSH0190243BNKH0190243BS0
10-32 UNF13/327/32H019032GKH0190322BNKH0190322BSH0190323BNKH0190323BS0
12-24 UNC1/25/16H021624GKH0216242BNKH0216242BSH0216243BNKH0216243BS1
1/4-20 UNC1/25/16H025020GKH0250202BNKH0250202BSH0250203BNKH0250203BS1
1/4-28 UNF1/25/16H025028GKH0250282BNKH0250282BSH0250283BNKH0250283BS1
5/16-18 UNC3/43/8H031218GKH0312182BNKH0312182BSH0312183BNKH0312183BS2
5/16-24UNF3/43/8H031224GKH0312242BNKH0312242BSH0312243BNKH0312243BS2
3/8-16 UNC3/43/8H037516GKH0375162BNKH0375162BSH0375163BNKH0375163BS2
3/8-24 UNF3/43/8H037524GKH0375242BNKH0375242BSH0375243BNKH0375243BS2
7/16-14 UNC3/43/8H043714GKH0437142BNKH0437142BSH0375143BNKH0375143BS2
7/16-20 UNF3/43/8H043720GKH0437202BNKH0437202BSH0437203BNKH0437203BS2
1/2-13 UNC7/81/2H050013GKH0500132BNKH0500132BSH0500133BNKH0500133BS3
1/2-20 UNF7/81/2H050020GKH0500202BNKH0500202BSH0500203BNKH0500203BS3
9/16-12 UNC7/81/2H056212GKH0562122BNKH0562122BSH0562123BNKH0562123BS3
9/16-18 UNF7/81/2H056218GKH0562182BNKH0562182BSH0562183BNKH0562183BS3
5/8-11 UNC7/81/2H062511GKH0625112BNKH0625112BSH0625113BNKH0625113BS3
5/8-18 UNF7/81/2H062518GKH0625182BNKH0625182BSH0625183BNKH0625183BS3
3/4-10 UNC13/8H075010GKH0750102BNKH0750102BSH0750103BNKH0750103BS4
3/4-16 UNF13/8H075016GKH0750162BNKH0750162BSH0750163BNKH0750163BS4

PMC Mercury STI Gages are furnished in standard Class X tolerance and meet the demands of gaging oversized tapped holes prior to inserting Screw Thread Inserts. Stocked in 2B and 3B class of fit as standard.

Please specify type (member only, member with handle or double end with handle); nominal size and threads per inch; Go or Not Go member (or both in double end handle) and Class of fit (2B or 3B). Handles are not included with members unless specified. Customer specific tool numbers marked upon request.

Our STI Plug Gages are available in chrome and TiN coat. Special pitch diameters; special size, metric and W tolerance are available – please call 1-800-825-4272 and we will gladly prepare a quote.

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