M3 Button Head Socket Cap Screws Set 20 25 30 35 40mm Fully Threaded 10.9 Grade Alloy Steel Black Oxide Finish With Metric Allen Hex Drive 100 Piece Assortment Kit

High-Grade M3 Button Head Socket Cap Screws 100pc Set
✔️ M3 x 20/25/30/35/40 mm, 10.9 grade alloy steel, black oxide

These M3 button head socket cap screws are fully threaded and crafted from 10.9 grade alloy steel with a durable black oxide finish. The kit includes five lengths (20, 25, 30, 35, 40 mm) with 20 pieces per size, totaling 100 pieces. They’re a solid choice for precision assemblies, electronics enclosures, machinery mounts, and DIY projects where a clean, strong fastener is needed.

✅ Thread diameter 3 mm
✅ Pitch 0.5 mm
✅ Lengths 20, 25, 30, 35, 40 mm
✅ Head diameter 5.4 mm
✅ Head height 1.4 mm
✅ Drive type Allen 2.02 mm
✅ Material 10.9 grade alloy steel with black oxide finish

💡 What is an M3 button head screw used for in precision assemblies? These handy fasteners are designed for secure, flush joints in compact spaces such as electronics enclosures and small machinery. - Handy for electronics enclosures
- Great for mounting brackets and chassis
- Provides strong holding power in tight spaces