Feature:
Black-oxide alloy steel screws are mildly corrosion resistant in dry environments.
These alloy steel screws are nearly twice as strong as stainless steel button head screws.

Specification:Item: Button Head Screws
Thread Type: Metric
Thread Size: M3
Thread Pitch: 0.5mm
Thread Length: 12mm/0.5"
Drive Type: Hex Socket
Head Style: Socket Button Head
Head Diameter: 5.5mm/ 0.22"
Hex Socket Width: 2mm/0.08"
Head Height(Approx): 2mm/0.08"
Material: 10.9 Alloy Steel
Exterior Finish：Black Oxide
According To: ISO 7380-2004
Package Include: 100(±2%)pcs x Button Head Screws
Weight: 71g

Quality Assurance:Product undergoes three levels of quality testing (pre-production, 1st article, pre-shipment).
Each completed kit is weight-verified, and samples from each lot are inspected prior to shipping.
24-hour mail service. If you encounter any problems after purchase, we offer a 30-day return and replacement service