[100 PKG] Cap Screws Button Socket Steel Black Oxide 4-40 X 1/4

Cap Screws Button Socket Steel Black Oxide 4-40 X 1/4 delivers a compact, high-strength fastener designed for precision assemblies and equipment builds where a flush, clean appearance matters.

Product Features

Material: Steel built for durability and load-bearing performance in a variety of applications.

Finish: Black oxide coating provides corrosion resistance, reduces glare, and gives a sleek, professional look.

Head Type: Button head ensures a low-profile capture in tight spaces while maintaining structural integrity.

Drive Style: Socket cap screw with internal hex drive for secure tightening and a clean exterior.

Thread Size and Length: 4-40 thread with 1/4 inch length (0.25″), suitable for light-to-medium duty fastening in electronics, mechanical assemblies, and machinery.

Application: Ideal for machine components, electronics enclosures, chassis, hobby projects, and assemblies where a smooth surface is essential.

Why Choose Cap Screws Button Socket Steel Black Oxide 4-40 X 1/4

Trusted for consistent performance, these fasteners pair well with compatible nuts and threaded holes. The black oxide finish minimizes visual distraction in visible installations while providing additional corrosion resistance in mild environments. Precision-machined threads ensure smooth engagement and reliable mating with compatible hardware.

Upgrade your toolkit with these cap screws to ensure a clean, professional finish in your next build or repair project. Add to cart now to secure fast, lasting joins that stay put under vibration and use.