660 Pieces M2 Button Head Hex Socket Cap Screws Fully Threaded Metric Machine Screws M2 By 4 6 8 10 12 16 20mm Mini Grade 10.9 Alloy Steel Black Oxide Anti Rust Oil Coated Bolts Nuts Washers All In One Bolt Kit

660-Piece M2 Button Head Socket Cap Screw Kit
✔️ Includes M2 x 4-20mm screws, nuts, washers, and Allen keys

This all-in-one bolt kit provides M2 button head socket cap screws along with matching nuts, washers, and Allen keys in a sturdy storage box. It's ideal for electronics, robotics, small machinery, furniture assembly and DIY projects.

✅ Thread size: M2; lengths 4-20 mm; Grade 10.9 alloy steel
✅ Exterior finish: black oxide; anti-rust oil coating for corrosion resistance
✅ Contents: 660 screws, 150 nuts, 150 flat washers, 150 spring washers, 2 Allen keys
✅ Drive type: hex socket; head style: button head; includes storage box
✅ Applications: suitable for machinery, electronics, furniture assembly and DIY

💡 What is a button head socket cap screw used for in precision assemblies? Here's a handy overview for common uses in small builds. - In tight spaces where a low-profile head helps clearance - Handy for electronics, robotics, and small machinery where secure fastening matters - The black oxide finish and anti-rust oil boost durability in challenging environments - Pairs with matching nuts and washers for sturdy assemblies