The lists below show our range of UNC HT Steel Button Head socket screws.
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 'Continue Shopping' button on the order form.
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.
You can review and edit your order, or submit your order at any time by using the button at the bottom of each list.
For a guide to suitable washers, please scroll to the bottom of the page or click here
Button heads have a smaller socket size and shallower depth socket than the equivalent sized cap screw and so more care should be taken not to over-torque, especially on the very small sizes, to avoid rounding of the socket edges.
It's also crucial to ensure that your hex key of driver is completely inserted before applying significant torque.
We do not recommend the use of T handle drivers on socket button head screws below 8 UNC size due to the ease of inadvertent over-tightening with this style tool.
If your application is for a high torque connection or the screws will be regularly removed and re-used, we would suggest that a socket cap screw is considered.
All prices include 20% VAT Click here for details
* Metric dimensions have been converted from inch dimensions
For UNC nuts - click here
For flat and spring washers - click here
We do not stock specific UNC washers, but the following metric equivalents can be used for general applications :-
This page was last modified on : July 26, 2021
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