Product Name: DIN128 Split Lock Washer, Curved Spring Lock Washer Model NO.: DIN128 Spring Washer Type: Standard Combination Washer Packaging: All Inclusive Combination Washer Structure: A Type Material: Stainless Steel Type: Lock Washer Trademark: Oriental Industry Transport Package: Plastic Bags + Cartons + Pallets Specification: DIN128 Origin: China Product Description Oriental Industry Co., Ltd is a leading manufacturer of retaining rings, circlips, snap rings, disc Spring washers, spring pins etc. in China. Our factory has obtained IATF16949 and ISO14001 certificates. The products can be applied to automotive industry, wind power machinery, engineering machinery, electrical tool, electrical appliance, general machinery etc. 80% of our products are exported to Europe, North America, South America and Asian & Pacific area. By introducing advanced equipment, using quality material and develop new process, Oriental Industry has set up a well-established production system. The utilization rate of raw material is improved from 30% to 70%. We have invested the advanced cold rolling mill which ensures the thickness tolerance within 0.05 mm.Material:Carbon spring steel C67S, 60Si2Mn, Stainless Steel SS420, SS304, SS316.Workshop:Products1 Retaining rings, circlips, snap rings, E rings, DIN471, DIN472, DIN6799, DIN983,DIN984, D1300, D1400, D1460, D1500, CRESCENT RING (M1800), GRIP RING2 Russian standard retaining rings, GOST 13942, GOST 13943,ГОСТ 13942, ГОСТ 139433 Snap rings, Retaining spring flat concentric rings, GOST 13940, GOST 13941, ГОСТ 13940, ГОСТ 13941, DIN5417/M3200/SP series, WRE, WR-SW(M2400) Series, BR-AR-SB, M2300 SB Series, DIN7993 round wire rings4 Spring pins, DIN1481 / ISO8752, DIN7346 / ISO13337Material: carbon spring steel 65Mn, SUS304Finish: blackened, galvanized5 DIN2093, DIN6796 Disc springs, conical spring washer6 DIN6798A, B, J DIN lock washers7 DIN137 wave spring washers8 DIN128 split lock washer, curved spring lock washer9 We also provide custom-made retaining rings and stamped products. All the tooling will be made on our own expense within 3 days.10 Grease nipples11 Hose clampsCertificatesHeat treatment and finish- Austempering is applied to increase the mechanical property of our products. Our modern heat treatment equipment and skillful technicians guarantee each retaining ring within the mechanical properties required.- The standard finish of carbon steel retaining rings is phosphate. - Dacromet is available on request.- Zinc plating is available, but is not recommended because of the risk of hydrogen brittleness.- Stainless steel is polished into original color after heat treatment.Chemical and mechanical properties of steelCarbon spring steel C67 EN 10132-4: 2000Chemical components of Carbon spring steel C67SCSiMnPSNiCrMoCuother0.65-0.730.15-0.350.60-0.90≤0.025≤0.025≤0.400≤0.400≤0.100-Mechanical properties of C67SCondition of deliverySoft annealed (+A) or soft annealed and slightly rerolled (+LC)Quenched and tempered (+QT)0,2% proof stress Rp0,2 [N/mm²]max. 5101200 - 1900Tensile strength Rm [N/mm²]max. 640Fracture elongation A80 [%]min. 16Hardness [HV]max. 200370 - 580Hardness [HRB]max. 92Hardness [HRC]38,5 - 54Typical hardness values (HV) for quenched and tempered materials at different thickness rangesEffective thickness [mm]0,30<=0,500,50<=0,750,75<=1,001,00<=1,501,50<=2,002,00<=3,00Hardness [HV]485 - 535465 - 515455 - 505445 - 495425 - 475415 - 465Stainless Steel SS4202Cr13, which is equivalent to 420, is frequently used for SS retaining rings. The hardness reaches HRC 44-50 after heat treatment. This makes our SS retaining rings much excel the just 'stamped stainless retaining rings'Chemical composition (%) of 2Cr13CSiMnPSNiCrMoCuother0.16-0.25≤1.00≤1.00≤0.035≤0.030*12.00-14.00---* Ni is allowed to be equal to or less than 0.6.Steel 60Si2MnChemicals:CSiMnPSNiCrMoCuother0.57~0.651.50~2.000.60~0.90≤0.035≤0.035≤0.35≤0.35--≤0.25-Mechanical Property:Tensile Strength:σb(MPa):≥1274(130) Yield strengthσs(MPa):≥1176(120) Elongationδ10(%):≥5 reduction of cross section ψ(%):≥25Hardness:hot rolling,≤321HB; cold rolling+heat treatment,≤321HB