3-3/4", 4-5/8", 3-7/8", 4-1/2", 4-1/4"
21 mm, 17 mm, 5.5 mm, 22 mm, 55 mm
Imperial, Whitworth, SAE, Metric, SAE/Metric
Aluminium Bronze, Beryllium Copper, Drop Forged Carbon Steel, Chrome Vanadium Steel, Alloy Steel
Satin, Black Oxide, Mirror, Full Polish, Black Chrome
BS192:1982.
DIN 3113, ASME B107.6
BS192:1982., DIN 3113., ASME B107.6., DIN 3113B