Gr 8 SAE Bolts Hex Hd C/S 1/2"x5 1/2"

Sold in sets of 25 Fine thread bolts are a type of fastener commonly used in applications where a higher level of thread engagement or finer adjustment is needed1. They are often used in machinery, automotive, and precision engineering industries1.  They allow finer adjustments in applications that need such a feature2.