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Zinc Form B Washers (BS 4320B / DIN 125-B)
Zinc plated Form B washers for clamping and load distribution in general internal fixing applications.
Timco Form B Washers – Zinc – M10 – Box of 6,000
In stock
£43.33 ex VAT(£51.99 inc VAT)
SKU:
WB10ZBULK
Timco Form B Washers – Zinc – M12 – Box of 5,000
In stock
£56.66 ex VAT(£67.99 inc VAT)
SKU:
WB12ZBULK
Timco Form B Washers – Zinc – M6 – Box of 32,000
In stock
£72.49 ex VAT(£86.99 inc VAT)
SKU:
WB6ZBULK
Timco Form B Washers – Zinc – M8 – Box of 15,000
In stock
£83.33 ex VAT(£99.99 inc VAT)
SKU:
WB8ZBULK
What are zinc Form B washers used for?
Zinc Form B washers are used to spread load under a bolt or nut during clamping and spacing applications. Because they have a larger outer diameter than Form A washers, they distribute pressure across a wider surface area.
Manufactured from steel and plated in zinc with a clear passivation (CR3), these washers conform to BS 4320B, which is equivalent to DIN 125-B. They are thinner than Form A washers and are commonly used in internal construction, engineering and general assembly work.
Specifications
| Material | Steel |
|---|---|
| Finish | Zinc Plated (CR3) – Clear Passivated |
| Standard | BS 4320B / DIN 125-B |
| Corrosion Rating (1–5) | 1 – Clean, dry & low humidity environments |
| Profile | Form B – Wider outer diameter |
Available Sizes
| Washer Size | To Suit Bolt | Typical Uses |
|---|---|---|
| M6 | M6 bolt | Light machinery assemblies and internal timber fixings |
| M8 | M8 bolt | General construction and equipment mounting |
| M10 | M10 bolt | Structural timber connections and brackets |
| M12 | M12 bolt | Heavy duty internal fixings and steelwork assemblies |
| M16 | M16 bolt | Structural steelwork and heavy machinery mounting |
| M20 | M20 bolt | Large structural connections and heavy engineering assemblies |
Why choose Form B instead of Form A?
Form B washers have a larger outer diameter than Form A washers. As a result, they provide greater load distribution and improved surface coverage.
They are often selected when fixing into softer materials, oversized holes or where increased load spreading is required.
