Bordo 1/8" x 40 BSW 1" Chrome Button Die

Bordo threading dies cut external threads on bolts, studs, and bar stock to metric, UNC, UNF, and BSW standards. The BSW Chrome Button Die - 4808 is part of Bordo's comprehensive Australian cutting tool range — trusted by engineers, tradespeople, and machinists across industry and manufacturing.

Where this product is used

Threading dies cut external threads on rod, bolt, and bar stock — round split dies allow adjustment; hexagonal dies suit die stocks and die holders.

• Cutting external threads on bolts, studs, and rod in workshop and maintenance
• Thread repair and creation on metric, UNC, UNF, and BSW fasteners
• Engineering production, maintenance, and fabrication requiring external thread cutting

Key specifications

Selecting the right option

Split round dies allow adjustment for a range of thread quality from rough to precision. A die stock (handle) is required — confirm it suits the die outer diameter. HSS suits standard steels; HSS-Co for stainless and hard alloys. Always chamfer the end of the rod or bolt before threading — it helps the die start square.