Description Warranty Information TE-CO Tapped Hole Location Gage - 10301 Hardened and precision ground Shaft diameter .250" + .0002" x 3/8" long, 6.35mm + 0.005mm x 3/8" long All diameters concentric within .0002" T.I.R. Right hand thread See all TE-CO Tapped Hole Location Gages & Sets Tapped Hole Location Gage