Kays Fasteners

UNF Set Screws 

High Tensile

Zinc Plated

Please select your requirements from the drop down lists above 

  • UNF fully threaded hexagon head set screws. 
  • Grade 5 steel (USA equivalent to 8.8 high tensile).
  • Choice of 1/4", 5/16", 3/8", 7/16", 1/2" diameters.
  • 1/4" UNF - 28 threads per inch.
  • 5/16" UNF - 24 threads per inch.
  • 3/8" UNF - 24 threads per inch.
  • 7/16" UNF - 20 threads per inch.
  • 1/2" UNF - 20 threads per inch.
  • All screws are fully threaded.
  • Bright zinc plated.
  • Manufactured to BS1768.
  • Screw lengths do not include the head.
  • FREE 1st CLASS UK P&P*
  • Photographs are for illustration only, these are not mixed packs.
  • GET IT FAST - orders placed before 2pm are dispatched the 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.

A vat invoice is issued with all orders.

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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