On this page you will find our current range of No 0, No 3, No 4, No5, No 6, No 8, No10 and 1/4 UNF socket cap screws.
UNF = Unified Fine thread
UNC and UNF threads are designated with a size ref followed by the threads per inch
i.e. 0-80 = No 0 size with 80 threads per inch
For more data on UNC, UNF and many other types of thread - please click here
Other sizes are available, so if the size you need is not listed then please e mail us for a quotation.
Socket sizes are stated in millimetres (imperial sizes have been converted to metric). If you need a key, click on the symbol in the tables below and you will be taken to the allen key and ball driver page.
To order, click on the 'Add to Order' button alongside the item of your choice. You can select the quantity on the order form (default is 1). To continue ordering other items, use the 'Back' button on your browser, or the continue shopping button on the order form - the order form will retain the information until you are ready to submit your order.
You can review and edit your order, or submit your order at any time by using the button at the bottom of each list.
UNF screws are primarily sized in inches, but metric equivalents are given (to 2 decimal places).
All prices include 20% VAT Click here for details
Send mail to
questions or comments about this web site.