A general flat washer to prevent the head of a male screw or nut from biting into the base material. Nominal diameter: M4
Outer diameter (mm): 10
Inner diameter (mm): 4.5
Thickness (mm): 0.8
Surface treatment: Unichrome
Package: Bolt Pack (Blister)
Material/Finish: Cold-rolled steel plate (SPCC)
Surface treatment: Nickel plated finish
Note: Items with "small" in the nominal diameter are small round.
Country of origin: Not disclosed
Code number: 160-7987
