Socket Set Screw, Measurement System: Metric, M6x1 Thread, 30 mm Length, Knurled Cup Point, Alloy Steel, 14.9 45H Grade, Plain/Thermal Black Oxide, Hex Drive, UNC Thread, 45-53 HRC Hardness

ITEM FEATURES:

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