M30-3.50 x 320 mm Socket Head Cap Screw Partially Threaded Coarse Alloy Steel 12.9 Thermal Black Oxide ISO4762, 5 pcs/Pack Package:5 Countersunk serrated lock washers feature

Countersunk serrated lock washers feature a unique design that provides a secure grip and prevents loosening under vibration

Shoulder Diameter: 4mm

while the nylon insert grips the threads of the bolt

Flange nuts feature a washer-like base that distributes pressure over a larger area

Length: 6 1/4

M30-3.50 x 320 mm Socket Head Cap Screw Partially Threaded Coarse Alloy Steel 12.9 Thermal Black Oxide ISO4762, 5 pcs/Pack Package:5 Countersunk serrated lock washers featureHigh quality Socket Head Cap Screw, perfect for various applications. Thread Size: M30 3. 50 Length: 320 mm Grade: 12. 9 Material: Alloy Steel Finish: Thermal Black Oxide Thread Type: Partially Specification Standard: ISO4762 Drive Style: Socket System Of Measurement: Metric