UNF Socket Screws

UNF socket screws, also known as Unified Fine Thread are high tensile fasteners with a hexagonal recess in the head, allowing them to be driven with an allen wrench or hex key. The design provides a secure grip and allows for high torque application.

A measurement system used in the United States, the UNF thread pitch is finer compared to UNC screws, meaning there are more threads per inch. This results in a tighter and more precise fastening, and they are commonly used in the automotive industry.

UNF socket screw types include socket cap screws, socket button screws, countersunk (CSK) socket screws, and socket set (grub) screws. Finishes include zinc, stainless and unplated self colour.

Sizes we stock include 6/40", 10/32", 1/4", 5/16", 3/8", 7/16", 5/8", 3/4", 7/8"