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Steel Tube Fitting, JIC 37 deg Flare Nut for 0.63 Inch OD Tube

Description & Features

Designed to ensure a secure and reliable connection, the Steel Tube Fitting JIC 37-degree Flare Nut caters to 0.63-inch OD tubes. This precision-engineered component from Eaton Aeroquip excels in maintaining a leak-free seal in high-pressure hydraulic systems. Constructed from robust steel, it offers durability and enduring performance in demanding industrial environments.

With a sleek design and dimensions of A: 0.97 and B: 1, this flare nut is a vital component for seamless integration in hydraulic assemblies, ensuring optimal fluid transfer and system efficiency. Its compatibility with the Aeroquip by Danfoss / Eaton 1290 Series makes it an ideal choice for replacing spare parts within this product line.

SKU: 1290-10S

Supplier Part Number (MPN): 1290-10S

Alternate Part Numbers: C1AJ72, MI-00317445, MINO-00015F64634

Specifications

Brand Aeroquip® by Danfoss	Connection Type SAE 37 deg Flared	Dimension Standards SAE 070110/J514	Finish Dura-Kote™	Fitting Type Nut	For Use With 900605 Tube Sleeves	Hex Size 1 x 1 in	Material Steel	Material Construction Carbon Steel	Series 1290 Series	Thread Size 7/8-14

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1290-4S Steel JIC Tube Nut	0.25	0.62	0.56
1290-12S Steel JIC Tube Nut	0.75	1.02	1.25
1290-16S Steel JIC Tube Nut	1	1.12	1.5
1290-6S Steel JIC Tube Nut	0.38	0.72	0.69
1290-8S Steel JIC Tube Nut	0.5	0.84	0.88
1290-20S Steel JIC Tube Nut	1.25	1.22	2
1290-3S Steel JIC Tube Nut	0.19	0.6	0.44
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Product Questions & Answers (4)

Question by: Frank T on Oct 28, 2025, 2:35 PM

got a 0.63 OD tube, is this the right flare nut for it or am i off a size

Answer by: Customer Support on Oct 30, 2025, 6:00 AM

Match it to a 0.63 inch outside diameter tube. This part is a JIC 37 degree flared nut in the Aeroquip by Danfoss 1290 series, and it is specified for 0.63 inch OD tube.

Question by: Steve C on Mar 24, 2025, 6:01 AM

fixing a hydraulic line and looking for a nut that fits a 0.63 inch od tube. is this a standard 37 degree jic

Answer by: Customer Support on Mar 25, 2025, 9:59 AM

Steel JIC 37-degree flare nuts like this one are machined specifically to fit 0.63-inch outer diameter tubing. You can thread it right onto your standard flared connections.

Question by: Kent E on Sep 13, 2025, 6:46 AM

Got a flare nut that's worn out on a 5/8 OD tube line. This the right replacement for that size?

Answer by: Customer Support on Sep 14, 2025, 7:11 AM

For 0.63 inch OD tube, yes, this is the correct flare nut. It's part of the Aeroquip 1290 Series from Eaton and follows the JIC 37 degree flare standard, so it'll mate up with any standard JIC flare fitting of the same tube size. The catalog number is C1AJ72 if you need to cross-reference it on any paperwork or procurement records.

Question by: Dean R on Mar 24, 2026, 4:24 PM

Will this nut work with a standard JIC flare fitting?

Answer by: Customer Support on Mar 25, 2026, 8:35 PM

This is specifically a JIC 37-degree flare nut, so it's designed to work with other fittings that meet the JIC standard for that flare angle.

Steel Tube Fitting, JIC 37 deg Flare Nut for 0.63 Inch OD Tube

Description & Features

Specifications

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Product Questions & Answers (4)