3/8"-36 UNS X 1" OD HSS Round Adjustable Die BoltsandNuts.com 4 Flute countersinks (or machine

4 Flute countersinks (or machine countersinks) are designed for countersinking holes for centers or for enlarging existing holes

Part Number: 87C850HSBA325G/PT

The Phillips tip geometry is machined to precise tolerances for an exact fit with fasteners

Ironclad’s top of the line leather work gloves are exceptionally durable

Tekton solid punches can be used to knock loose stubborn fasteners

3/8"-36 UNS X 1" OD HSS Round Adjustable Die BoltsandNuts.com 4 Flute countersinks (or machineProduct 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