1. Made of durable 10.9 Alloy Steel material , it is anti-corrosion and anti-rust. The screw is sturdy and has a good hardness which can be used for a long time.
2. Fixing component, industrial and construction fasteners. Used widely in the DIY handmade, wooden products, home and office appliance, communication equipment, ship assembly and other machinery industry.
3. Precision mechanical thread, easy to install, convenient to use, without any complicated tools.
4. Please confirm the thread size before purchasing them!

Specification:
Material: 10.9 Alloy Steel
Color: Black
Type 1:
Thread Size: (Male)M3x4mm/0.12"x0.16"(D*L)
Total Length: 5.5mm/0.22"
Head Diameter: 6mm/0.24"
Hex Socket Width: 2mm/0.08"
Head Height(Approx): 1.5mm/0.06"
Thread Pitch: 0.5mm
Type 2:
Thread Size: M3x5mm/0.12"x0.2"(D*L)
Total Length: 6.5mm/0.26"
Head Diameter: 4mm/0.16"
Hex Socket Width: 2mm/0.08"
Head Size: 5x1.5mm/0.2"x0.06"(D*H)
Thread Pitch: 0.5mm
Type 3:
Thread Size: (Male)M3x6mm/0.12"x0.24"(D*L)
Total Length: 7mm/0.28"
Head Diameter: 5.5mm/0.22"
Hex Socket Width: 2mm/0.08"
Head Height(Approx): 1mm/0.04"
Thread Pitch: 0.5mm

Package Content:
300pcs in total(100pcs of each size)