Socket Set Screw, Measurement System: Imperial, 1/2-13 Thread, 1 in Length, Knurled Cup Point, Alloy Steel, Plain/Thermal Black Oxide, Hex Drive, UNC Thread, 0.291 in Point, 45-53 HRC Hardness, 1/4 in Drive

ITEM FEATURES:

• Similar to cup point but where vibration might be a problem
• Knurls lock onto seating material and prevents screw from loosening