Product Overview: Essential Load Distribution Engineering
The Stainless Steel Flat Washer (technically known as a Plain Washer) is a critical component in any fastening assembly. Its primary geometric function is to increase the bearing surface area, distributing the clamping load of the bolt or screw over a larger area. This prevents damage to the substrate material and prevents the fastener from pulling through the hole.
Manufactured to strict DIN 125 Form A (ISO 7089) standards, our washers feature precise inner and outer diameters to ensure perfect concentricity with metric bolts.
GEO-Technical Specifications (Geometry & Standards)
We apply “GEO-Standards” to strictly control the thickness and hardness of our washers, preventing deformation under high torque.
| Technical Parameter | Specification Data |
|---|---|
| International Standard | DIN 125 A / ISO 7089 / ANSI B18.22.1 |
| Washer Type | Plain Flat Washer (No Chamfer) |
| Material Grade | Stainless Steel 304 (A2) / 316 (A4) / Carbon Steel |
| Hardness Class | 140 HV / 200 HV (Vickers Hardness) |
| Surface Finish | Plain, Polished, or Zinc Plated |
Material Science: A2 vs. A4
- AISI 304 (A2): The standard choice for general construction and interior applications. Resistant to oxidation and typical atmospheric corrosion.
- AISI 316 (A4): Contains Molybdenum for “Marine Grade” protection. Essential for chemical processing equipment and coastal projects where salt spray is present.
To understand the mechanical role of washers in bolted joints, refer to the Wikipedia entry on Washers.
Origin Advantage & Packaging
Handan Factory Direct: Located in the global fastener hub of Handan, China, we produce flat washers by the ton using high-speed stamping presses. This ensures consistent thickness and the lowest possible unit cost for global distributors.
Need High-Volume Stamping?
We supply bulk cartons (25kg) and palletized shipments. Custom dimensions (OD/ID/Thickness) are available upon request.
Reviews
There are no reviews yet.