STI Gages

KATO CoilThread Gages include a "GO" and "HI" (NO GO) member. The Working Gage "GO" member has a 0.0002 wear allowance on the pitch diameter. The "GO" member checks the basic pitch diameter, major diameter minimum and lead. The "HI" member checks the maximum pitch diameter. The minor diameter must be checked separately with a graduated pin set. Recommended for production use since their greater tolerance allows for more wear. Pitch diameters at or very close to the basic size and are to be used as master gages.