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Euclid · Hardware & Fasteners
E5977R
In stock · ships from Knoxville
This is an outer cap nut (right-hand thread) for heavy-duty truck and trailer wheel studs.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
Right‑hand thread only; not for left‑hand studs. Designed for severe service.
Part data verified against 5 catalog sources
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It secures dual wheels or a single wheel on a large‑stud disc mount, clamping the rim to the hub. The nut is through‑hardened for strength and zinc dichromate plated to resist corrosion, making it suitable for severe‑service applications. Replace when threads are damaged, the nut is rusted, or during routine wheel‑end maintenance.
Part Number: E5977R
RH OUTER NUT
Unit: ea
Dealer: Post Onsite
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