3-3/4", 4", 3-7/8", 4-1/2", 4-1/4"
5.5 mm, 21 mm, 55 mm, 26 mm, 15 mm
Whitworth, Imperial, Metric, SAE, SAE/Metric
Aluminium Bronze, Beryllium Copper, Chrome Vanadium Steel, Drop Forged Carbon Steel, Alloy Steel
Satin, Black Oxide, Mirror, Full Polish, Black Chrome
DIN3113, DIN 3113., ASME B107.6
BS192:1982., ASME B107.6., DIN 3113B