UNC Thread Socket Capscrews Self Colour

Unified National Coarse Also Known As UNC Thread 

Socket Capscrews To ASNI 1936/1960 Series BS2470 Grade: 36 - 44HRc Self Colour Finish

Range From No4 UNC - 1" UNC

Thread Per Inch Index Below

No4 - 40 TPI, No6 - 32 TPI, No8 - 32 TPI, No10 - 24 TPI, 1/4" - 20TPI, 5/16" - 18 TPI, 3/8" - 16 TPI, 7/16" - 14 TPI

1/2" - 13 TPI, 5/8" - 11 TPI, 3/4" - 10 TPI - 7/8" - 9 TPI, 1" - 8 TPI