... steel, 3.Size: M2-M30, #2-56-1/4-20 4,High quality,cheap price 1.Type: Ball spring2. Material: Stainless steel, carbon steel3 ... . Thread Size: M2-M30, #2-56-1/4-204. Finish: Zinc plated, passivated, Nickle plated5. Packing: Outer carton ... with inner ploybag6. Delivery time:10-15days7. MOQ: 1000pcs 8. Standard: ISO, JIS, GB, BS, ANSI, DIN9. Can be customized ...