... to M12 3. Material: stainless steel 200, 201, 304, 316 Set Screw Knurlled1. Standard: DIN, ANSI, GB and non-standard;2 ... and nice brightness;5. Raw Material: bought from Group Company, with stable quality and completive price;6. Processing: by cold-forging ... machines, together with precise moulds and punch pins;7. Length: 3mm to 60mm ...