4.2x13 Heat-Treated Version Button Head Flat Tail Screw

Product Overview
This product is an American standard 10‑24×13 cross recess triangular self‑tapping screw, made of carbon steel with heat treatment for hardening, and coated with a blue, environmentally friendly Therma‑Plus anti‑corrosion coating. The head features an integral flange wafer head with anti‑slip serrations, and the triangular point allows direct self‑tapping thread forming without the need for matching washers. It combines vibration‑resistant anti‑loosening performance with long‑term rust protection, making it a high‑end fastener specifically for sheet metal and outdoor equipment.

Product Applications
Sheet metal chassis and equipment enclosures that are painted/powder‑coated after assembly.
Sheet metal and plastic assemblies are inside dry enclosed electrical appliances and industrial power supplies.
Automated assembly products that are finished on the same production day without long‑term storage.
Fixing thick‑wall plastic housings in smart home and industrial applications.
Usage Note: This product has no rust protection treatment. Do not use in humid, outdoor, or exposed screw applications. Storage must be in vacuum‑sealed packaging with desiccant.