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NXF UNS S316/DIN1.4401/AISI 316/0Cr17Ni12Mo2 Diameter 1-100mm Grade 100-450HV Stainless Steel Fastener 316 Flat Washer
2026-09-15 17:36 NXF GROUP
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Product Description
Stainless Steel 316 Introduction
316 is chrome-nickel austenitic alloy. It also contains molybdenum which increases general corrosion resistance,improves
resistance to pitting from chloride ion solutions, and provides increased strength at high temperatures.316 also provide excellent fabricability and formability. It is also called Marine Grade Stainless Steel.
resistance to pitting from chloride ion solutions, and provides increased strength at high temperatures.316 also provide excellent fabricability and formability. It is also called Marine Grade Stainless Steel.
316 Flat Washer Introduction
Flat Washer is a fundamental standard fastening accessory widely matched with bolts, screws and nuts in mechanical connection systems. Featuring a flat annular structure with precise inner and outer diameter tolerance, it is designed to disperse fastening pressure, protect workpiece surfaces from extrusion damage, compensate for assembly gaps and increase friction contact area.Manufactured from high-quality carbon steel, alloy steel and stainless steel materials compliant with DIN, ISO and ASTM standards,flat washers deliver flat surface finish, uniform thickness and excellent compression resistance without deformation. Effectively preventing bolt loosening and surface abrasion during long-term vibration and locking conditions, they are universally applied in mechanical manufacturing, steel structure engineering, automotive industry, electrical equipment, construction facilities,pipeline fastening and general industrial assembly, serving as an essential basic component for stable, safe and standardized fastening connections.
316 Flat Washer Drawing
316 Chemical Composition And Mechanical Properties
Factory and Product Pictures
316 Flat Washer Product Pictures
316 PMI spectral testing proves
Video of a customer visiting us
Product processing
316 Flat Washer Product processing
1.Raw Material Inspection & Blanking:
Adopt high-quality carbon steel, alloy steel and stainless steel sheet materials that comply with DIN, ISO and ASTM industrial standards. Strictly inspect sheet thickness uniformity, surface flatness, mechanical properties and internal metallographic structure to exclude cracks, rust spots, inclusions and oxide defects. Qualified raw materials are precisely blanked according to washer specifications to form standard annular blanks, ensuring consistent inner and outer diameter dimensions for subsequent forming processing.
2.Surface Pretreatment & Stamping Forming:
2.Surface Pretreatment & Stamping Forming:
Complete professional surface pretreatment including degreasing, pickling and phosphating to remove oil stains and oxide layers, optimizing surface flatness and processing performance. Adopt high-precision die stamping technology for one-time integral punching and forming of flat washers. The precision stamping process ensures uniform thickness, regular annular outline and smooth flat surface, providing stable structural foundation for pressure dispersion and fastening fitting.
3.Trimming, Shaping & Flatness Calibration:
3.Trimming, Shaping & Flatness Calibration:
Remove stamping burrs, edge flashes and sharp residues on inner holes and outer circles. Conduct fine shaping and precision flatness calibration to eliminate warping and deformation. Strictly control parallelism and surface smoothness to ensure the washer fits closely with fasteners and workpieces without gaps, guaranteeing uniform stress dispersion effect.
4.Stress Relief & Heat Treatment:
4.Stress Relief & Heat Treatment:
Implement targeted heat treatment and stress relief processing for stamped washers. Eliminate internal residual stress generated during stamping and shaping to prevent long-term deformation and warping. Standardized heat treatment stabilizes structural hardness and compression resistance, improving overall structural stability and fatigue resistance under continuous fastening pressure.
5.Surface Treatment & Quality Testing:
5.Surface Treatment & Quality Testing:
Perform customized surface treatments such as electro-galvanizing, blackening, nickel plating and passivation to enhance anti-rust, anti-corrosion and wear-resistant performance. Conduct full-range professional inspections including dimensional tolerance detection, thickness uniformity test, flatness inspection, compression resistance test and surface defect screening, ensuring all indicators meet standard fastener manufacturing requirements.
6.Marking, Packaging & Warehousing:
6.Marking, Packaging & Warehousing:
Mark qualified flat washers with material grade, specification, execution standard and production batch. Complete automatic sorting and counting, and adopt dust-proof, moisture-proof and anti-collision standardized packaging. All finished products are classified and stored in warehouses and delivered after strict final inspection.
Our NXF GROUP advantage as follow
1.Our NXF GROUP have our own factory, and we can control the cost by producing by ourselves. We have a great advantage in price and can give you the lowest price based on best quality.
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate.
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate.
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
Packing & Delivery
Packing
Delivery
Company Profile
New XiFei (SuZhou) Business Co.,Ltd is one of the leading and most respected manufacturers in China. Our products include metals,machinery, containers, construction materials, mechanical products, electrical systems, and medical accessories.Established in1980, XIFEI has been working diligently ever since to embrace the needs of our global customer base.We work to ensure absolute customer satisfaction. Our team has dedicated itself to perfecting our three core components, "Service, Management and Craftsmanship." Our advantage:3S Service(Small Quantity/Short Time/Special Material)
Certification
FAQ
1.Who are we?
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central America(5.00%),Africa(5.00%),Southeast Asia(5.00%). There are total about 101-200 people in our office.
2.How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.What can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4.Why should you buy from us not from other suppliers?
Our advantage:3S Service (Small Quantity/Short Time/Special Material) We have our own factories, quality can be controlled seriously. We Specialize in manufacturing about 21 years. We have professional testing department and testing equipment.
5.What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central America(5.00%),Africa(5.00%),Southeast Asia(5.00%). There are total about 101-200 people in our office.
2.How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.What can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4.Why should you buy from us not from other suppliers?
Our advantage:3S Service (Small Quantity/Short Time/Special Material) We have our own factories, quality can be controlled seriously. We Specialize in manufacturing about 21 years. We have professional testing department and testing equipment.
5.What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
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Phone
+8613917160311
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+8613917160311
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Email
info@nxf-group.com
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