OO M3 Form 'B' Flat Washers Zinc Plated
Due to the recent Covid-19 outbreak, our trade counter is currently closed for customers.

Collection is available on orders with instructions for collections once orders are placed.

Courier deliveries are currently operating as normal with some delays in a small select number of locations.

We have made arrangements with suppliers to send items direct on a next day service on items that have a 3 day availability and are not on our shelves. These charges are set by our manufacturers and will depend on items ordered and delivery postcode, but should help with clearing backlogs and ensuring deliveries are received quickly if required.

This information may change at any time.


M3 Form 'B' Flat Washers Zinc Plated


M3  Form  'B'  Flat  Washers  Zinc  Plated
  • Form B flat washers are thinner than the heavier duty form A type washers.
  • They are zinc plated for resistance to corrosion, and conform to BS4320 standards.
  • Washers provide a smooth surface for the nut or bolt to bear on, making it less likely to loosen as a result of an uneven fastening surface.
  • The main purpose of a washer is to distribute the load under a bolt head or the nut face.

Scroll down for further product information...

When out of stock, any availability times are estimates and dependent upon supplier stock. Items without a lead time have no confirmed status and may take up to 12 weeks to arrive.

Next day delivery is available on items marked with a *.


ImageProduct + Brand: PriceAvailabilityQty

M3 Form 'B' Flat Washers Zinc Plated (Pack of 1)


Part No: M03-FW-ZFB

TIK Products

£0.01
Excl VAT: £0.01
1170 Packs
In Stock

M3 Form 'B' Flat Washers Zinc Plated (Pack of 10)


Part No: FM03-FW-ZFB10

TIK Products

£0.65
Excl VAT: £0.54
120200 Packs
In Stock

M3 Form 'B' Flat Washers Zinc Plated (Pack of 12,000)


Part No: FM03-FW-ZFB

Fixings Megastore

£16.08
Excl VAT: £13.40
100 Packs
In Stock
  • Form B flat washers are thinner than the heavier duty form A type washers.
  • They are zinc plated for resistance to corrosion, and conform to BS4320 standards.
  • Washers provide a smooth surface for the nut or bolt to bear on, making it less likely to loosen as a result of an uneven fastening surface.
  • The main purpose of a washer is to distribute the load under a bolt head or the nut face.

Zinc coatings prevent oxidation of the protected metal to create a longer lasting finish. It does this by forming a barrier and by acting as a sacrificial anode if this barrier is damaged. Zinc oxide is a fine white dust that (in contrast to iron oxide) does not trigger a breakdown of the substrates surface integrity as it is formed. The zinc oxide, if left intact, can act as a barrier to further oxidation, in a way similar to the protection afforded to aluminum and stainless steels by their oxide layers.

Fastener Specifications
Washer TypeFlat Form B
Internal Diameter3.3mm
External Diameter7mm
Thickness0.25mm
FinishZinc Plated
Washer SpecificationBS4320B