PMMA transparent material with a special screw: screw assembly can be used separately: full alloy series, SKD61, SACM645; optional double barrel respectively alloy series, SKD61, alloy nitride. Process: screw barrel, respectively, can be a whole entire hardening, nitriding, plating, painting alloy, cast alloy double. Adhesion strength: 10000psi above surface finish: Screw surface is less than 0.04um surface hardness:. HRC56-68 degrees. Transparent PMMA optical lens type (all-alloy screw / K5 double alloy cylinder) PMMA transparent lens type (SKD61 screw / K3 double alloy cylinder) PMMA transparent special type (SACM645 screw / alloy nitride barrel) Scope: PMMA and PC transparent material, can also be used for molding PP, PE, ABS. Applicable products: a light guide plate, optical lenses, LED transparent parts, lighting, car shade, transparent acrylic crafts. Information from: Shenzhen Jinxin Machinery Co., Ltd. If you like long fingers, how to meet the different needs of users? Jinxin never compared to just break their own people! We have been working hard! Every year, every day, we are making progress! We lead, others follow. Jinxin - to create a new era of Chinese screw. ------ Select Jinxin production falters try? Give me a trust, but also you are very responsibility!