Designed for insertion through holes in assembled parts.
A bolt which is prevented from being turned during assembly, normally be tightened or released by torquing a nut. (Such as: track bolts, plow bolts.)
Feature a countersunk, flat head, square neck, and unified thread pitch.
Commonly used in road/motor graders, and other heavy-duty industrial equipment applications
Characterized by hexagonal head shape with tighter tolerances.
They require installations with a wrench.
There are a number of lengths and threading varieties