Kays Fasteners

Form C Flat Washers 

A4 Marine Grade

Stainless Steel

Please select your requirements from the drop down lists above

Specifications
M4
Inside Diameter 4.2mm
Outside Diameter 10mm
Thickness 0.8mm

M5
Inside Diameter 5.3mm
Outside Diameter 12.5mm
Thickness 1.0mm

M6
Inside Diameter 6.4mm
Outside Diameter 14mm
Thickness 1.6mm

M8
Inside Diameter 8.4mm
Outside Diameter 21mm
Thickness 1.6mm

M10
Inside Diameter 10.5mm
Outside Diameter 24mm
Thickness 2.0mm

M12
Inside Diameter 13mm
Outside Diameter 28mm
Thickness 2.5mm

M16
Inside Diameter 17mm
Outside Diameter 34mm
Thickness 3.0mm
  • Form C flat stainless steel washers.
  • These washers have a wider rim than standard form A washers.
  • A4-70 stainless steel for increased corrosion resistance.
  • Manufactured to BS 4320.
  • FREE 1st CLASS UK POST*.
  • Photographs are for illustration only, these are not mixed packs.
  • GET IT FAST - orders placed before 2pm are dispatched same day (Mon-Fri).

Visit our Ebay shop for a full range of fasteners & fixings:


All items are in stock ready for dispatch.
Same-day dispatch when ordered before 2 pm (Mon-Fri).

Payment through PayPal is preferred as it is then covered by the PayPal payment protection scheme.

Orders paid for by postal orders and cheques will be dispatched when full payment has cleared.

We guarantee to dispatch all orders within 24 hours of cleared payment.

Orders placed at weekends or on a public holiday will be dispatched the next working day.

All items will be posted by Royal Mail first class or express carrier unless stated otherwise.

*Deliveries to some remote post codes may incur additional costs.

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