Q402-5 - Bernard Style Q402 Centerfire Shock Washer (5-Pack)

Protect Your Torch

Don't let a small part cause a big problem. The Bernard Style Q402 Heavy Duty Shock Washer is the unsung hero of your MIG gun's front end. Designed for the popular Centerfire system, this washer sits deep inside the nozzle to protect your gas diffuser and neck insulator from the intense heat and flying spatter of the weld puddle. Over time, these washers can become brittle or clogged, leading to poor nozzle fitment or even internal arcing. Keeping a fresh pack of Q402s in your toolbox ensures you can swap them out during routine maintenance and keep your gun welding like new.

Heavy-Duty Performance

Welding generates extreme heat, and your consumables take the brunt of it. These "Heavy Duty" shock washers are crafted to last longer than standard washers, resisting cracking and deformation even under high-amperage use. Whether you are running a Bernard Q-Gun, S-Gun, or T-Gun, these washers ensure your nozzle stays tight and your gas flow remains turbulent-free. A worn shock washer can lead to loose nozzles and inconsistent shielding gas coverage—replace it before it fails.

Value and Convenience

Sold in a convenient 5-pack, the Q402-5 ensures you always have a spare when you need it most. Installation is effortless: simply remove the nozzle and contact tip, slide the old washer off the diffuser, and pop the new one in. It's a small investment that protects the more expensive components of your welding torch, saving you money on repairs and downtime in the long run.