A one-piece hex washer head bolt with a flat bearing surface made of medium carbon or high-alloy steel.
Heat treated.
Class 10.9, Rockwell hardness C32-39
Zinc plated.
Metric course threads.
A one-piece hex washer head bolt with a flat bearing surface made of medium carbon or high-alloy steel. Heat treated. Class 10.9, Rockwell hardness C32-39