Washer Factory Flat washers are mainly stamped out of iron plates. They are usually thin parts of various shapes,such as round, square. The shape is generally a flat washer with a hole in the middle. The size of this hole is generally determined according to customer requirements. DIN125 flat washers are used to reduce friction, prevent leakage, isolate, prevent loosening or disperse pressure. Restricted by the material and process of threaded fasteners, the bearing surface of bolts nuts is not large, so in order to reduce the compressive stress of the bearing surface and protect the surface of the connected parts, stainless steel/galvanized flat washers are used. Production Process of Flat Washer Specification of Flat Washer Size M1.6 M1.7 M2 M2.3 M2.5 M2.6 M3 M3.5 M4 M5 M6 M7 M8 M10 M12 M14 d min1.71.82.22.52.72.83.23.74.35.36.47.48.410.51315 max1.841.942.342.642.842.943.383.884.485.486.627.628.6210.7713.2715.27 dc max44.5566778910121416202428 min3.74.24.75.75.76.646.647.648.649.6411.5713.5715.5719.4823.4827.48 h nominal0.30.30.30.50.50.50.50.50.811.61.61.622.52.5 max0.350.350.350.550.550.550.550.550.91.11.81.81.82.22.72.7 min0.250.250.250.450.450.450.450.450.70.91.41.41.41.82.32.3 KGS/1000PCS 0.0240.0310.0370.0920.0880.1270.1190.1550.3080.4431.021.391.833.576.278.62 Size M16 M18 M20 M22 M24 M26 M27 M28 M30 M32 M33 M35 M36 M38 M39 M40 d min17192123252728293133343637394041 max17.2719.3321.3323.3325.3327.3328.3329.3331.3933.6234.6236.6237.6239.6240.6241.62 dc max30343739445050505660606666727272 min29.4833.3836.3838.3843.3849.3849.3849.3855.2658.858.864.864.870.870.870.8 h nominal3333444445555666 max3.33.33.33.34.34.34.34.34.35.65.65.65.66.66.66.6 min2.72.72.72.73.73.73.73.73.74.44.44.44.45.45.45.4 KGS/1000PCS 11.314.717.218.332.343.742.340.953.677.475.394.392.1136133130 Common Grade and Coating StandardGradeFinsh DIN125 DIN9021100HV white zinc yellow zinc black oxide H.D.G Dacromet ... 140HV 200HV 300HV Application Area of Flat Washer Flat washers are mainly used to reduce friction, prevent leakage, isolate, prevent loosening, or distribute pressure. Therefore, there are many application scenarios, and it can be seen in most infrastructure fields, such as petrochemical, automobile manufacturing, construction, pressure pipelines, rail transit, steel structure engineering, large-scale power generation machinery facilities and infrastructure. How to Buy Flat Washer from Us? Inquiry There are two types of fasteners. One is standard parts, such as DIN125 flat washers. The other is non-standard parts. If you want standard pieces, you can tell the standard, size, grade (material), coating and quantity. 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.Washer Factory website:http://www.jinruibolt.com/washer/