Hex Jam Nut - 5/16-18 UNC zinc-plated steel hex jam nut for Genie opener and aerial lift assemblies. This genuine Genie OEM replacement part (Genie 22679A04.S) is designed for use in Genie garage door opener systems. Constructed from Steel, zinc-plated finish (Grade 5 equivalent). Dimensions: 5/16-18 UNC; width across flats 1/2 inch; height 3/16 inch. Installation: Threaded onto 5/16-18 UNC fastener, tightened against mating nut or surface.
A: A jam nut is a thin hex nut tightened against a standard nut or surface to lock a fastener in place or adjust the position of a threaded component.
A: This nut uses 5/16-18 UNC (coarse thread) and measures 1/2 inch across flats and 3/16 inch in height.
A: The nut is zinc-plated steel, likely Grade 5, providing good strength and corrosion resistance for garage door opener applications.
A: A standard 1/2 inch wrench (across flats) is required to install or remove this jam nut.
A: 22679A04 (without the .S suffix) is an alternate identifier for the same part and may appear on older Genie parts diagrams.
