Precision Flat Washers
We take an M10 flat washer as an example. Its outer diameter is φ20 mm. The pressure area goes up by 2.5 times compared to the nut bearing surface. This means your aluminum or plastic parts will not get a dent. Our inner and outer diameter concentricity is ≤0.1 mm. Thickness tolerance is ±0.05 mm. This meets GB/T 97.1 and ISO 7089 standards.
Protect Soft Surfaces with Our Precision Flat Washer
Do you worry about pressure all gathering on a small ring? Soft materials get pressed down easily. Our Precision Flat Washer fixes this. It looks simple but does a big job. It spreads the nut's pressure over a larger area. It protects your work piece surface from scratches. We are a factory in Shanghai. We have made fasteners for 20 years.
Check Our Data and Precision Tolerances
We take an M10 flat washer as an example. Its outer diameter is φ20 mm. The pressure area goes up by 2.5 times compared to the nut bearing surface. This means your aluminum or plastic parts will not get a dent. Our inner and outer diameter concentricity is ≤0.1 mm. Thickness tolerance is ±0.05 mm. This meets GB/T 97.1 and ISO 7089 standards. The bolt size range is φ3 mm to φ14 mm. We use three main materials. SPCC cold rolled steel gives a high surface flatness. Stainless steel SUS304 or 316 offers good corrosion resistance. Regular carbon steel is cost effective. Our process uses high-speed precision stamping. The edges have no burrs. Hardness is HV 100-150. Surface finish includes black oxide, cleaning, or zinc plating. Zinc plating gives 48-72 hours of salt spray test.
|
Parameter |
Standard / Value |
|
Pressure Area Increase (M10) |
2.5 times vs. nut bearing face |
|
Concentricity (ID/OD) |
≤ 0.1 mm |
|
Thickness Tolerance |
± 0.05 mm |
|
Bolt Size Coverage |
φ3 mm to φ14 mm |
Why Our IATF 16949 Certification Matters
We have passed the IATF 16949:2016 certification. This standard is very strong in the auto industry. It means our quality control reaches car-level standards. Payment terms are 30% deposit and 70% balance. We take US dollars. Big orders get discounts. Our zinc plating process meets RoHS requirements. It has no hexavalent chromium. You can trust our flat washers for your daily assembly work.
The entire product line is fully customizable.
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