Corrosion Protection Excellent rust and corrosion protection
Material: carbon steel
Surface treatment: nickel plated, black zinc plated
Standard: GB/T
Thread diameter: M1.4 (1.4mm), M1.7 (1.7mm), M2 (2mm), M2.3 (2.3mm), M2.6 (2.6mm), M3 (3mm), M3.5 (3.5 Mm), M4 (4mm)
Available length: 3mm-20mm (including head length)
Packing: plastic packing