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Post Onsite · Hardware & Fasteners
61A-6
In stock · ships from Knoxville
This is a 3/8-inch brass compression nut. It threads onto the body of a compression fitting to secure tubing (such as copper, nylon, or plastic air line) without soldering or flaring.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
International
Other applications
International
Other applications
Compression nuts are standard industrial hardware; this part is not limited to a specific vehicle model. Verify that your fitting uses a 3/8-inch compression nut and that the thread matches (typically fine thread for compression).
Part data verified against 3 catalog sources
Numbers this part supersedes or interchanges with. Showing 1 of 1.
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In heavy-duty truck and trailer repair, these nuts are commonly used on air brake lines, fuel lines, and pneumatic control systems when a leak‑free connection is needed. You replace it when the old nut is rounded, cracked, or when rebuilding a compression fitting.
Part Number: 61A-6
3/8 LONG NUT
Unit: ea
Dealer: Post Onsite
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