Button Head Bolts, Allen Head Screws

A4 / 316 Marine Grade stainless steel
Stainless steel significantly improves resistance, tarnishing and corrosion.

Measurements - The bolt length refers to the thread length.  
(So if you order 20mm for example then the thread length will be 20mm and the head is extra.  Therefore this means the bolt is longer than 20mm.)  
If there is any confusion please send us a quick message and we will clear up any confusion or concerns that you might have.  We are always happy to help.    


All orders will be dispatched within 24 hours of cleared payment.

Orders placed on weekends or public holidays will be dispatched the next working day.
All items will be posted by Royal Mail.

If you would like A4 316 Marine Grade (Washers and Lock Nuts) please choose the option with nuts and washers in the drop down menu.  

If you would like Dome nuts, please see our other listings. 

In the unlikely event you have any problems, please don't hesitate to contact us and we will do our very best to rectify the problem as smoothly and quickly as we can.
We are very customer focused and we want all our customers to be 100% satisfied with our products and our service and we will go out of our way to keep our customers happy if any problems should arise.


Threads are standard metric coarse;
  • M4 x 0.70mm pitch 
  • M5 x 0.80mm pitch 
  • M6 x 1.00mm pitch 
  • M8 x 1.25mm pitch
  • M10 x 1.50mm pitch 
  • M12 x 1.75mm pitch