100 Pcs M3 30mm Hex Socket Button Head Cap Screws Kit Black Oxide Finish Alloy Steel 12.9 Grade 0.5mm Thread Pitch Includes 31.53mm Total Length 5.50mm Head Diameter And 1.53mm Head Height

High-quality M3 30mm hex socket button head cap screws kit
✔️ 100 alloy steel screws with 0.5mm pitch, 12.9 grade, black oxide finish for reliable fastening and rust resistance.

Hex socket button head cap screws are practical fasteners commonly used in machinery assembly, automotive repairs, and DIY projects to securely join metal parts and components.

✅ Material: Alloy steel 40CR with black oxide finish offers high strength and anti-rust properties
✅ Dimensions: M3 thread diameter, 30mm thread length, 0.5mm pitch, total length 31.53mm, head diameter 5.50mm, head height 1.53mm
✅ Drive style: Hex socket with 2.0mm hex size, includes one hex key made from chrome-vanadium steel for easy installation
✅ Package: 100 screws and 1 hex key in a plastic storage case for organized and convenient use

💡 What makes hex socket screws a go-to choice for mechanical fastening?
Hex socket screws provide solid holding power in tough setups.
- Deliver high torque without stripping
- Work well in tight spots for precise assembly
- Hold up against wear in industrial jobs
- Pair easily with standard tools for quick swaps

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