4137 alloy steel Low profile screw for 3D printer 1. OEM manufacture. 2. Precision : according to your drawings. 3. We are able to supply sheet metal, mechanical parts machining, surface treatment such as anodization and plating according to our customers' requirement. 4. Our products have been exported to American, Canada, England,Belgium and Japan,we can guarantee the high quality. 5. Offer OEM service according to your drawing and samples. 6. Quality assurance: 100% inspection before shipment by micrometre, height gauge, projector measuring machine, coordinate measuring machine(CMM). Advantages: 1.Fast lead time 2.Small MOQ available 3.Non-standard/standard/OEM/ODM/customized service provided 4.Certificate:ISO9001:2008, RoHS,SGS 5.High precision Brand name J&B Material available 1.Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS420 2,Steel:C45(K1045), C46(K1046),C20,etc. 3.Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200CuZn37), C28000(CuZn40),etc. 4.Bronze: C51000, C52100, C54400, etc. 5.Iron: 1213, 12L14,1215,etc. 6.Aluminum: Al6061, Al6063, etc. 7,.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1045,12L14,etc. 8, Alloy steel: SCM435,10B21, C10B33,etc. Surface treatment available Zn- Plated,Ni-plated,Passivated,Tin-plated,Sandblast and Anodize, Polish,Electro Painting,Black Anodize,Plain,Chrome plated, Hot Deep Galvanize(H. D. G. ) etc. Heat Treatment Tempering,Hardening,Spheroidizing,Stress Relieving. Cetificate ISO9001-2008,SGS,ROHS Standard ISO,GB,DIN,JIS,ANSI,BSW Manufacture Process Heading →washer →assembly →Threading →Secondary machine →heat treatment →plating →Anti-slipping →Baking →QA Package →Shipping Package 1. Plastic Bags+Carton+ Pallet(Carton size: 20cm*20cm*15cm) 2.according to customers requirements. 3.Suitable for sea shipping and air shipping Terms of payment 30% deposit to confirm the order, left payment balance before shipping Quality Warranty Before shipping,the QC will test, and we confirm our goods will satisfy yr request of 100%, and have 18 month warranty After sales service we will follow up goods for every customer and help solve problem after sales.