M20 Flat Washers / Steel / Black Oxide / DIN125A
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Product Description
M20 Flat Washers / Steel / Black Oxide / DIN125A
Specifications
| Material | Steel |
|---|---|
| Finish | Black Oxide |
| Size | M20 |
| Inside Diameter | 21 mm |
| Outside Diameter | 37mm |
| Thickness | 2.7 - 3.3 mm |
| Standard | DIN 125A |
| RoHS Compliance | RoHS Compliant |
| Measurement System | Metric |
RoHS Compliant
Frequently Asked Questions
What is the difference between USS and SAE flat washers?
USS (Type B) flat washers have larger outside diameters and are thicker than SAE (Type A) washers of the same bolt size. USS is designed for softer materials and larger load distribution. SAE is used for harder materials and standard fastener installation.
Does Black Oxide finish provide corrosion protection?
Black Oxide provides mild corrosion resistance through a controlled oxidation process. It is dimensionally stable (no plating buildup), will not chip or flake, and is suitable for indoor use. For outdoor or wet environments, additional oil coating or a different finish (zinc, stainless) is recommended.
Flat Washers / Steel / Black Oxide
Family: D125AB
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Technical Specifications
Thread Size
M20
Material
Steel
Thread Direction
Unthreaded
Outer Diameter
37mm
Thickness
2.7 - 3.3 mm
SKU
M20D125AB-500