169732 - Miller M-25 MIG Gun Hex Jam Nut

Secure Your M-25 MIG Gun with Genuine Miller Parts

The Miller 169732 Jam Nut Hex is a critical replacement component designed specifically for the industry-standard M-25 MIG welding gun. In the demanding world of industrial fabrication, the integrity of your welding equipment is paramount. The M-25 gun, commonly paired with workhorse machines like the Millermatic 250 and 252, relies on a solid mechanical connection between the handle and the gooseneck (neck tube). This hex jam nut provides that essential locking force, ensuring that your torch remains rigid and precise during operation.

Over time, heat cycles and mechanical stress can wear down threads or loosen connections. A loose gooseneck not only makes the gun difficult to maneuver but can also lead to shielding gas leaks and poor electrical conductivity, resulting in porosity and unstable arcs. By replacing a worn or missing nut with this genuine Miller OEM part, you restore the structural integrity of your MIG gun. The hexagonal design allows for easy tightening with a standard wrench, ensuring a secure fit that resists vibration.

At Josef Gas, we understand that downtime is costly. That is why we stock authentic Miller replacement parts to keep your shop running smoothly. Whether you are performing routine maintenance or an emergency repair, trust the Miller 169732 to fit perfectly and perform reliably. Do not compromise with generic substitutes that may strip threads or fail under heat; choose the part engineered for your specific equipment.

Key Benefits

• Perfect Fit: Engineered to exact Miller specifications for the M-25 gun.


• Durability: Built to withstand the thermal and mechanical stresses of welding.


• Performance: Maintains proper gas seal and electrical path.