... ) high quality with directly factory price 4) Free samples Black Nickel Thumb Screw Item#: DJ-301Standard: ANSI, JIS, DIN, ISO, BSThread ... StandardMaterial: Low carbon steel, brass and stainless steelSurface Finishing: Black Nickel platedSample confirmation: 10-15 working days after received the tooling ... , ISO Standard and Environment Protection OEM & ODM are welcome ! Black Nickel Thumb Screw