F1401/4 BSW Gun Nosed Die

Solid round die with a gun nose, for British Standard Whitworth thread BSW 1/4" with 20 TPI and medium class of fit, dimensions according to ISO 2568 standard with 20mm outside diameter and 7mm thickness, HSS with lapped surface finish for threading in free machining and plain carbon steel, ferritic stainless steel and gray, malleable, ductile and compacted graphite cast-iron