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Brass Compression Nut For Copper & Aluminum Tubing, 0.75 Inch Tube OD

Description & Features

Constructed from high-quality brass, this compression nut is expertly designed for use with copper and aluminum tubing, featuring a 0.75-inch tube OD. The brass construction ensures durability and corrosion resistance, making it suitable for air, oil, and water applications, including vacuum service. With no flaring required, this compression nut offers a low-cost, easy-to-assemble solution for industrial needs.

Engineered for reliable performance, this nut supports tubing sizes with pressure ratings ranging from 188 PSI for 3/4” to 1” tubing, up to 500 PSI for 1/8” to 1/4” tubing, incorporating a 4:1 safety factor. It operates efficiently within a temperature range of -65°F to 250°F, ensuring versatility across various environments. Note that it is not recommended for use with steel tubing.

SKU: 261X12

Supplier Part Number (MPN): 18041

Alternate Part Numbers: C1BH79, MI-08754389, MINO-01769X98880

Specifications

Brand Midland Industries	Brand Midland Industries	Pack Size 1.00	UOM EA	L 0.69	Supplier Part Number 261X12	Tube O.D. 0.75	Tube O.D. 0.75	Alternate Part Numbers Alternate Part Number C1BH79, Alternate Part Number MI-08754389, Alternate Part Number MINO-01769X98880	Product Weight 0.08 lbs

Similar Products

Model Number	Tube O.D.	L	Price	Action
261X12 Brass Compression Nut	0.75	0.69

Product Questions & Answers (2)

Question by: Harvey R on Jan 31, 2026, 12:26 PM

got a 3/4 inch copper line on a water system here and need a replacement compression nut. this gonna fit right or do i need something different?

Answer by: Customer Support on Feb 1, 2026, 12:47 PM

For 3/4 inch tube OD on copper, this is the correct fit. It's made specifically for copper and aluminum tubing at that size, so you won't need an adapter or anything extra. Just keep in mind the pressure rating at that tube size runs 188 PSI working pressure with a 4:1 safety factor, so make sure that lines up with what your system is running.

Question by: Sherry W on Mar 24, 2026, 9:19 PM

Can I use this compression nut with steel tubing?

Answer by: Customer Support on Mar 26, 2026, 6:59 AM

It's made for copper and aluminum tubing, so it's not recommended for steel.