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Stainless Steel Tube Fitting, 0.31 Inch Tube OD, Female JIC 37 deg Flare Nut

Brand Ssp Fittings Corp	Brand SSP Fittings Corp	Pack Size 1.00	UOM EA	L 0.67	Supplier Part Number J5N	Thread 2 1/2-20	Tube O.D. 0.31	Alternate Part Numbers Alternate Part Number C1DA17	Tube O.D. 0.31	Product Weight 0.04 lbs

Product Questions & Answers 3

Product Questions & Answers

trying to replace a tube nut on a line, how do i know this one matches what ive got?

Question by: Shane S on Dec 23, 2025, 7:23 AM

Match it up by the tube size and the thread. This nut is for 0.31 inch tube OD and it has a 1/2-20 female JIC 37 degree flare thread, so it fits a male JIC 37 degree flare connection in that size.

Answer by: Customer Support on Dec 24, 2025, 9:08 AM

Will this fitting work with standard stainless steel tubing?

Question by: Lance W on May 26, 2025, 8:28 AM

This fitting is manufactured from 316 stainless steel and designed to work with 0.31 inch OD tubing.

Answer by: Customer Support on May 27, 2025, 8:55 PM

fitting says 0.31 inch tube OD, is that the same as 5/16 tube, or am I measuring something different?

Question by: Jimmy J on Nov 20, 2025, 12:12 PM

0.31 inch is the decimal equivalent of 5/16 inch, so yes, those are the same size. The tube OD is the outside diameter of the tubing itself, not the bore or wall thickness. As long as your tubing measures 5/16 inch on the outside, this nut will fit it correctly.

Answer by: Customer Support on Nov 22, 2025, 10:09 AM

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