1/4"-28 x 3-1/4" Socket Head Cap Screw Partially Threaded Fine Alloy Steel Thermal Black Oxide, 500 pcs/Pack Package:500 This feature helps prevent loosening

This feature helps prevent loosening due to vibration

The Manual Press is available for assembling parts where production volume does not justify more expensive pneumatic presses

Shoulder Diameter: 12mm

and screws

Specification / Standard: DIN7991

1/4"-28 x 3-1/4" Socket Head Cap Screw Partially Threaded Fine Alloy Steel Thermal Black Oxide, 500 pcs/Pack Package:500 This feature helps prevent looseningHigh quality Socket Head Cap Screw, perfect for various applications. Thread Size: 1 4 28 Length: 3 1 4 Material: Alloy Steel Finish: Thermal Black Oxide Thread Type: Partially Drive Style: Socket System Of Measurement: Inch