BSW is a British Standard Whitworth screw thread standard that uses imperial (inch-based) units.  

BSW and UNC are very similar thread forms in all cases except for 1/2" sizes; they are interchangeable with each other in non-critical applications such as furniture repair.

This is a range of OBSOLETE STOCK that we are trying to clear. We welcome enquiries for other sizes in full box quantities. These are usually available to us the next working day, depending on stock availability. 

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