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The Range£10.04Visit shop Unifix A2-304 St/St Form B Washers M20 (21.0) - Q204320b02000000000 - Box Of 100 - Silver
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The Unifix Form B Washers M20 are essential components for engineers, contractors, and DIY enthusiasts requiring reliable load distribution in structural connections. Crafted from A2-304 stainless steel, these washers provide superior corrosion resistance and long-term durability in outdoor or humid environments. While they offer excellent performance for heavy-duty fastening, users should ensure they are pairing them specifically with M20 bolts to maintain the structural integrity required by the Form B standard.
| Colour | Silver |
|---|---|
| Model Part Number | 5014196325279 |
| Brand | Unifix |
These washers are manufactured from high-quality A2-304 stainless steel, known for its excellent corrosion resistance.
Yes, these washers meet BS 4320B standards for structural reliability.
No, these are specifically designed for M20 bolts. Using them with smaller bolts may result in improper load distribution.
Yes, because they are made from A2-304 stainless steel, they are highly suitable for outdoor and damp environments.
The Form B design provides a wider surface area compared to narrow washers, allowing for better load distribution.
Verify that you are using a standard M20 bolt. If the bolt is significantly smaller than 20mm, use the appropriately sized washer.
Ensure the washer is perfectly centered on the bolt hole and is lying flat before tightening the nut.
To ensure peak performance, place the washer onto the bolt shank before passing the bolt through the work surface. Ensure the flat side of the washer is flush against the material to achieve optimal surface contact. These washers are specifically sized for M20 bolts; avoid forcing them onto larger hardware or using them with significantly smaller bolts, as this will prevent proper load distribution. While A2-304 stainless steel is highly resistant to elements, it is good practice to wipe away industrial dust or chemical residue during routine maintenance. If installing in a high-tension application, consider applying a light coat of anti-seize compound to the threads of your M20 bolt to protect the hardware during tightening.
