Custom Washer Spring washers are also called lock washers. The materials of DIN127 spring washers are stainless steel and carbon steel. The commonly used stainless steel/zinc plated spring washers are size M3, M4, M5, M6, M8, M10, M12, M14, M16,M20 etc. The spring washer can prevent loosening and increase the pre-tightening force, while the flat washer does not have this function. DIN127 spring washer can be used to increase the contact area, prevent the friction between the bolt and the workpiece, and protect the surface of the connector to prevent bolts being scratched when tightening nuts. Production Process of Spring washer Specification of Spring washer Size 桅3 桅3.5 桅4 桅5 桅6 桅7 桅8 桅10 桅12 桅14 桅16 桅18 桅20 桅22 桅24 桅27 d1 Min 3.1 3.6 4.1 5.1 6.1 7.1 8.1 10.2 12.2 14.2 16.2 18.2 20.2 22.5 24.5 27.5 Max 3.4 3.9 4.4 5.4 6.5 7.5 8.5 10.7 12.7 14.7 17 19 21.2 23.5 25.5 28.5 d2 Max 6.2 6.7 7.6 9.2 11.8 12.8 14.8 18.1 21.1 24.1 27.4 29.4 33.6 35.9 40 43 b Nominal 1.3 1.3 1.5 1.8 2.5 2.5 3 3.5 4 4.5 5 5 6 6 7 7 Max 1.4 1.4 1.6 1.9 2.65 2.65 3.15 3.7 4.2 4.7 5.2 5.2 6.2 6.2 7.25 7.25 Min 1.2 1.2 1.4 1.7 2.35 2.35 2.85 3.3 3.8 4.3 4.8 4.8 5.8 5.8 6.75 6.75 s Nominal 0.8 0.8 0.9 1.2 1.6 1.6 2 2.2 2.5 3 3.5 3.5 4 4 5 5 Max 0.9 0.9 1 1.3 1.7 1.7 2.1 2.35 2.65 3.15 3.7 3.7 4.2 4.2 5.2 5.2 Min 0.7 0.7 0.8 1.1 1.5 1.5 1.9 2.05 2.35 2.85 3.3 3.3 3.8 3.8 4.8 4.8 h Min 1.9 1.9 2.1 2.7 3.6 3.6 4.6 5 5.8 6.8 7.8 7.8 8.8 8.8 11 11 Max 2.1 2.2 2.5 3.2 4.2 4.2 5.4 5.9 6.8 8 9.2 9.2 10.4 10.4 13 13 k 0.15 0.15 0.15 0.15 0.2 0.2 0.3 0.3 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 r 0.2 0.2 0.2 0.2 0.3 0.3 0.5 0.5 1 1 1 1 1 1 1.6 1.6 Size 桅30 桅36 桅39 桅42 桅45 桅48 桅52 桅56 桅60 桅64 桅68 桅72 桅80 桅90 桅100 d1 Min 30.5 36.5 39.5 42.5 45.5 49 53 57 61 65 69 73 81 91 101 Max 31.7 37.7 40.7 43.7 46.7 50.5 54.5 58.5 62.5 66.5 70.5 74.5 82.5 92.5 102.5 d2 Max 48.2 58.2 61.2 68.2 71.2 75 83 87 91 95 99 103 111 121 131 b Nominal 8 10 10 12 12 12 14 14 14 14 14 14 14 14 14 Max 8.25 10.25 10.25 12.25 12.25 12.25 14.25 14.25 14.25 14.25 14.25 14.25 14.25 14.25 14.25 Min 7.75 9.75 9.75 11.75 11.75 11.75 13.75 13.75 13.75 13.75 13.75 13.75 13.75 13.75 13.75 s Nominal 6 6 6 7 7 7 8 8 8 8 8 8 8 8 8 Max 6.2 6.2 6.2 7.25 7.25 7.25 8.25 8.25 8.25 8.25 8.25 8.25 8.25 8.25 8.25 Min 5.8 5.8 5.8 6.75 6.75 6.75 7.75 7.75 7.75 7.75 7.75 7.75 7.75 7.75 7.75 h Min 13.6 13.6 13.6 15.6 15.6 15.6 18 18 18 18 18 18 18 18 18 Max 16.1 16.1 16.1 18.4 18.4 18.4 21.2 21.2 21.2 21.2 21.2 21.2 21.2 21.2 21.2 k 0.8 0.8 0.8 0.8 0.8 0.8 1 1 1 1 1 1 1 1 1 r 1.6 1.6 1.6 2 2 2 2 2 2 2 2 2 2 2 2 Common Grade and Coating Standard Grade Finsh DIN127 65Mn white zinc yellow zinc black oxide H.D.G Dacromet ... #70 Application Area of Spring washer Spring washers are widely used in the load-bearing and non-load-bearing structures of general mechanical products. They are cheap and easy to installation. DIN127 spring washers are suitable for parts with frequent assembly and disassembly. Compared with flat washers, spring washers can increase the pre-tightening force and has an anti-loosening effect. When there is vibration, pulse, and the temperature of the ring fluctuates greatly, people normally use spring washers. How to Buy Spring washer from Us? Inquiry There are two types of fasteners. One is standard parts, such as DIN127 spring washers. The other is non-standard parts. If you want standard pieces, you can tell the standard, size, grade (material), coating and quantity. For example, you want to buy DIN127, M16, galvanized and 20000pcs. If you want non-standard parts, you can show us samples, drawings or detailed instructions. Then our engineers will make technical drawings for you. Price and payemnt The price can be price/piece, or price/kg. We can quote EXW, FOB, CFR ,CIF with T/T, L/C, Western Union,etc. Or other ways agreed with customers. Order After checking, if the price and lead time are both ok, We will start to produce after advance payment according the requirements we promise. Quality Insurance We buy PICC PRODUCTS LIABILITY INSURANCE every year. We can agree in the contract that we will replace the goods or refund the money if there are some quality issues after you get our products. If quality problems happen after use, we will track the goods to deal the problems. And our insurance policy can cover your lost. FAQ Q1: Are you a factory or trading company? A: We are manufacturer of hex bolts and nut for more than 20 years . We have two factories, one in Shanghai and the other in Jiangsu. Our production capacity can be 20000 + tons per year. We can customize our products according to customers' requirements, drawings and samples. Q2: How many years you do foreign trade? A: We have more than 20 years experience in exporting products to worldwide countries with our best quality. Now we have exported more than 40 countries, such as Spain, Germany, Italy, Belgium, United Kingdom, Lithuania, USA, Canada, Australia, Singapore,Japan, Thailand, Malaysia, South Korea,Indonesia, Egypt, Philippines and so on. Q3: Do you have enough outputs? A: We have enough stock in warehouses with abundant capital. We offer 24-hour services. For most common standards, we have them on stock, such as hex bolts, hex nuts, etc. Q4: How to ensure that every process's quality? A: First, we have technical drawings for each product when producing. Second, our workers most have more than 10-years experience of doing hex bolts. Third, our QC people will do inspection every 2 hours. If finding the bad parts, they will stop the porduction immediately. Then,the finished parts will be checked again before shipment which insures every product's quality. Q5: How to ensure the safety of long-distance transportation? A: We pack into cartons first, and then pack cartons on pallets. The pallet is very easy to lift by Forklift wihch will protect the cartons from damage. Professional packing teams which keep every packing safely. Q6: What products can you customize? A:One is standard parts, such as DIN933, hex bolts. The other is Non-standard parts. If you want standard parts, you can tell the standard, size, grade(material) ,coating and quantity. For example, you want to buy DIN933, M12X60,grade 8.8, zinc plated and 20000pcs. If you want non-standard parts, you can show us samples, drawings or detail descriptions. Then our engineer will do the technical drawings for you. There are many, such as hexagon bolts, flange bolts, round head square neck bolts, as well as track bolts, U-bolts, T-bolts, flat head hexagon bolts, hex nuts, hex flange nuts . Q7: Can you provide some sample? A: Samples can be provided as your requirements. Custom Washer website:http://www.jinruibolt.com/washer/