1/2"-20 x 2-1/4" Socket Head Cap Screw Partially Threaded Fine Thermal Black Oxide, 200 pcs/Pack NutS SAE flat washers are standard

SAE flat washers are standard flat washers designed to provide a smooth bearing surface and distribute load under bolts

and prevent loosening in high-vibration applications

External tooth lock washers feature serrated edges that grip both the fastener and the surface

Finish: Zinc Cr+3

1/2"-20 x 2-1/4" Socket Head Cap Screw Partially Threaded Fine Thermal Black Oxide, 200 pcs/Pack NutS SAE flat washers are standardHigh quality Socket Head Cap Screw, perfect for various applications. Thread Size: 1 2 20 Length: 2 1 4 Material: Alloy Steel Finish: Thermal Black Oxide Thread Type: Partially Drive Style: Socket System Of Measurement: Inch