Most recent
IFI-115:2002
Flange 12-Point Screws
This standard provides the dimensional requirements for inch flange 12-point screws from nominal thread size 1/4 through 1 1/2 inches.
Industrial Fasteners Institute [ifi]
This standard provides the dimensional requirements for inch flange 12-point screws from nominal thread size 1/4 through 1 1/2 inches.