Midwest Fastener 4-40 Acorn Cap Nut

The Midwest Fastener 4-40 Acorn Cap Nut provides a clean, finished appearance while protecting exposed fastener threads from damage and snagging. Crafted from solid brass, this cap nut offers reliable corrosion resistance and dependable holding power for decorative and mechanical fastening applications. Featuring standard coarse threading, this acorn nut threads smoothly onto compatible screws and bolts. It is ideal for electronics, light machinery, hobby assemblies, and general hardware projects requiring a closed-end fastener.