IFI-100/107, Prevailing Torque-Type Steel Hex and Hex Flange Nuts Regular and Light Hex Series


Issued 1967; Revised 2002. WITHDRAWN 2007 Ref. ASME B18.16.6 – included in IFI BOOK OF FASTENER STANDARDS, 2021 (11th) Edition. Author: Industrial Fasteners Institute; Issued 1967; Revised 2002. After purchasing this standard you will be redirected to a link to download this document.



This standard establishes the dimensional, mechanical and performance requirements for three grades of prevailing-torque type steel hex nuts, in sizes No. 4 thru 1-1/2 in., and two grades of prevailing-torque type steel hex flange nuts, in sizes 1/4 thru 3/4 in.