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coupling nut
the 85035L64 coupling nut called up on MT1-57-0521 is correct per drawing and is appropriate as the hdu prssure box is considered a high vibration area. this joint should be troqued to 504-540Lb. in accordance with DS2693-64.
FSC 4730 ⁓ Hose, pipe, tube, lubrication, and railing fittings
Excluding air conditioning-heating fittings (fsc 4520); bituminized fiber and concrete fittings (fsc 5630); conduit boxes and fittings (fsc 5975); downspout fittings (fsc 5670); medical and surgical fittings (fsc 6515); laboratory fittings (fsc 6640); post caps and rail ends (fsc 5660); machine thread bushings and plugs (fsc 5365).
the 85035L64 coupling nut called up on MT1-57-0521 is correct per drawing coupling nut
Nothing similar to this part number was found in our inventory
An item consisting of an internally threaded nut and an integral floating washer designed to be used with a gasket seal to connect beaded or swaged ferruled thin wall tubing to a coupling body, boss connection, or the like to form a flexible or rigid leakproof connection.