These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
Post Onsite · Hardware & Fasteners
N65-375S
In stock · ships from Knoxville
The N65-375S is a Roper lock nut and screw assembly designed for heavy-duty fastening where vibration-resistant connections are required.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It consists of a 3/8-inch diameter lock nut paired with a matching screw or bolt, commonly used to secure components like brake chambers, slack adjusters, brackets, or other chassis parts on trucks and trailers. The locking feature prevents the nut from backing off under constant shock and vibration. Replace this hardware when threads are stripped, the locking element no longer holds, or during routine brake system rebuilds to ensure reliable clamping force. [appliancepartspros.com](https://www.appliancepartspros.com/roper-microwave-screws-nuts-washers.html) shows that 'Roper' is a recognized brand of fasteners, while similar 3/8-inch lock nuts are used in lifting equipment like liftgates [theliftgateparts.com](https://theliftgateparts.com/Interlift-Nylock-Nut-375---16-GR5-Zin_p_6172.html).
Part Number: N65-375S
ROPER LOCK NUT AND SCREW
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
