Imperial Fasteners

Find imperial fasteners by their thread series and nominal diameter. Our zinc-plated steel BSW Whitworth hex nuts are available individually in nine listed sizes from 3/16 inch to 3/4 inch. BSW, BSF and Unified threads are different systems. Check diameter, threads per inch and thread form before ordering a replacement, and select the quantity of individual nuts required. Consult the BSW, BSF and UNC identification guide or the imperial thread size chart for reference; chart coverage does not imply that every size or thread series is stocked.