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