EUCLID E-5978-R Wheel Cap Nut, 3-3/32 in. Outer Overall Length, 1-15/16 in. Inner Thread Min. Depth, Dual, 3/4"-16, 1-1/8"-16

Manufacturer

EUCLID

Product Description

Wheel End Hardware, Inner Capnut

Features & Benefits

• Grade 8 through-hardened construction suits heavy wheel clamp load
• Inner cap nut design fits dual-mounted aluminum wheel positions
• Right-hand thread format matches the specified fastening direction
• 3.06-inch length reaches into the wheel stack for proper engagement
• Clean hex flats improve tool contact during installation and removal

Euclid Inner Cap Nut

The Euclid Inner Cap Nut fits dual-mounted aluminum wheel service, where the inner wheel hardware has to clamp securely before the outer wheel hardware is handled. Its Grade 8, through-hardened build suits heavy wheel-end fastening where torque load, thread engagement, and repeated service removal all matter. The part’s 3.06-inch length and right-hand thread format matter because cap nuts sit deep in the wheel stack, where access and alignment affect final assembly. Wheel service can slow down when old cap nuts have rounded flats, damaged threads, or mixed hardware from earlier repairs. For Euclid E-5978-R, the inner wheel position gets a fastener built for aluminum dual wheel mounting.