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Please note that both "Working Gages" and "Reference Gages" are shown tabulated. Working Gages are recommended for use with production since their greater tolerance allows for more wear. Reference Gages have pitch diameters at or very close to basic sizes and are to be used as master gages.

STI Gage Part Numbers

Nominal
Thread
Size
Working Gages Reference Gages
3B 2B 3B 2B
UNC - Unified Coarse
2-56 CGC-02X-3B CGC-02X-2B CGC-02W-3B CGC-02W-2B
4-40 CGC-04X-3B CGC-04X-2B CGC-04W-3B CGC-04W-2B
6-32 CGC-06X-3B CGC-06X-2B CGC-06W-3B CGC-06W-2B
8-32 CGC-2X-3B CGC-2X-2B CGC-2W-3B CGC-2W-2B
10-24 CGC-3X-3B CGC-3X-2B CGC-3W-3B CGC-3W-2B
1/4-20 CGC-4X-3B CGC-4X-2B CGC-4W-3B CGC-4W-2B
5/16-18 CGC-5X-3B CGC-5X-2B CGC-5W-3B CGC-5W-2B
3/8-16 CGC-6X-3B CGC-6X-2B CGC-6W-3B CGC-6W-2B
UNF - Unified Fine
10-32 CGF-3X-3B CGF-3X-2B CGF-3W-3B CGF-3W-2B
1/4-28 CGF-4X-3B CGF-4X-2B CGF-4W-3B CGF-4W-2B
5/16-24 CGF-5X-3B CGF5X-2B CGF-5W-3B CGF-5W-2B
3/8-24 CGF-6X-3B CGF-6X-2B CGF-6W-3B CGF-6W-2B
 
Nominal
Thread
Size
Working Gages Reference Gages
4H 5H 4H 5H

Metric

M2.5X0.45 CGM-2.5X0.45-4H CGM-2.5X0.45-5H ----- -----
M3X0.5 CGM-3X0.5-4H CGM-3X0.5-5H ----- -----
M4X0.7 CGM-4X0.7-4H CGM-4X0.7-5H ----- -----
M5X0.8 CGM-5X0.8-4H CGM-5X0.8-5H ----- -----
M6X1 CGM-6X1-4H CGM-6X1-5H ----- -----
M8X1.25 CGM-8X1.25-4H CGM-8X1.25-5H ----- -----
M10X1.5 CGM-10X1.5-4H CGM-10X1.5-5H ----- -----
M12X1.75 CGM-12X1.75-4H CGM-12X1.75-5H ----- -----

* Items are non-stocked items, and may require special orders with minimum requirements, and longer than average lead times.

For additional technical data on KATO STI Gages visit the Tech Info Page.