0958-0003 - Victor CGA 680 Brass Replacement Nut

Reliable Connections for High-Pressure Gas

When you are working with high-pressure cylinders, the integrity of your connections is everything. The Victor 0958-0003 Brass Nut is the direct replacement part you need for CGA 680 connections found on high-pressure Argon, Nitrogen, and Helium tanks. If you are running a heavy-duty TIG setup, a laser cutting system, or a high-pressure purging rig, you know that standard CGA 580 fittings just won't cut it for pressures exceeding 3000 PSI. That is where the CGA 680 standard comes in, and this Victor nut is built to handle the load.

Over time, the threads on your regulator inlet or manifold pigtails can get worn down, nicked, or stripped from constant cylinder changeouts. A compromised nut can lead to dangerous leaks or the inability to tighten your regulator securely to the tank. Swapping out a damaged nut with this genuine Victor replacement restores the safety and functionality of your equipment without the need to replace the entire regulator assembly. It is a cost-effective maintenance solution that keeps your shop running smoothly and safely.

Made from durable, heavy-duty brass, this nut is designed to withstand the rigors of the welding shop and the field. It resists corrosion and stands up to the torque needed to get a gas-tight seal on high-pressure valves. Because it is a Victor product, you can trust the machining quality; it spins on smooth and bites down hard when you need it to. Don't risk a blowout or a leak with mismatched or worn-out fittings.

This nut is specifically for the CGA 680 connection type. Before ordering, check your cylinder valves or existing equipment to ensure you are working with the high-pressure inert gas standard (3001-5500 PSIG). Whether you are building a custom manifold or just repairing a trusty flowmeter, keep a few of these in your spare parts bin so you are never stuck waiting on a delivery when a tank swap goes wrong.