Screw Selection Helper
Can’t find the screw you need? Pick a head type, material and size to see what SFP has in stock, then add it to your cart.
or
Metric threadsISO 60°
Unified threads UNC / UNF60°
Tap any row to look it up above. Sizes in brackets (e.g. M33) are second-choice sizes.
British Whitworth threads (BSW / BSF, 55°) differ from Unified threads and are covered in a separate article.
Across flats = distance between the two parallel faces of the hex key.