5/16"-30 UNS X 1-1/2" OD HSS Round Adjustable Die BoltsandNuts.com We precisely manufacture our hex

We precisely manufacture our hex key geometry on the large end of the applicable range

Size 3/8"-12

and straight mini pry bar

Part Number: 87F250HCS8Y

The smaller flat end keys are made from 8660 nickel chromium molybdenum steel that's heat-treated to 54–58 HRC and the larger flat end keys are made from 6150 chromium vanadium steel that's heat-treated to 44–50 HRC

5/16"-30 UNS X 1-1/2" OD HSS Round Adjustable Die BoltsandNuts.com We precisely manufacture our hexProduct Description HSS Round Dies are for use in making new threads or re threading existing threads. They are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Round dies are chamfered on both faces, one side has a 2 to 3 thread chamfer for threading and the other side has a 1 to 1 1 2 thread chamfer for threading close to a shoulder. Adjustments are made by a fine pitch screw which