5/8" OD Brass Compression Nut, Lead-Free

BrassCraft 61-10 – 5/8" Brass Compression Nut for Tubing Connections

The BrassCraft 61-10 compression nut is designed for use with 5/8" OD tubing in standard compression fittings. Manufactured from low lead compliant brass, it provides a secure mechanical joint in water, air, and inert gas applications, without the need for soldering or flaring.

Application and Function

Intended for use in compression connections, this nut secures the tubing sleeve (ferrule) against the fitting body, forming a leak-resistant seal. It is compatible with copper, aluminum, and plastic tubing (when used with a proper insert), and is suitable for potable and non-potable water systems, as well as general fluid handling.

Technical Specifications

• Nominal Tube Size: 5/8 inch OD
• Material: Low lead compliant brass
• Wall Thickness: 0.035 inches
• Hex Size: 15/16 inches
• Connection Type: Compression
• Pressure Rating: 150 psi
• Temperature Range: -65°F to 250°F

Features

• ✔ Mechanical Joint: Forms a strong, leak-resistant seal without heat
• ✔ Code-Compliant Material: Meets requirements for low lead content in potable water systems
• ✔ Versatile Use: Suitable for water supply lines, instrumentation, and general plumbing applications
• ✔ Reusable Design: Can be disassembled and reassembled if necessary during maintenance

Installation Notes

To install, place the nut and sleeve over the tubing, then insert the tubing into the compression fitting body. Tighten the nut until the connection is secure and leak-free. Use an appropriately sized wrench to avoid over-tightening and potential distortion of the tubing or fitting.

Contractor Use Case

Commonly used on job sites for water distribution systems, valve connections, and appliance hookups where a non-soldered mechanical connection is required. Its precision-machined threads and corrosion-resistant material make it a durable component for long-term use.

Summary

The BrassCraft 61-10 5/8" compression nut offers a reliable solution for sealing tubing connections in plumbing and mechanical systems. With solid brass construction and standard sizing, it ensures compatibility and ease of use across a range of installation scenarios.