

Coats 8181183 Nylon Insert Lock Nut 5/16-18 GR4
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Coats 8181183 Nylon Insert Lock Nut, 5/16-18 GR4
A fastener that backs out mid-job isn't just annoying -- it takes the machine offline. The Coats 8181183 is a 5/16-18 nylon insert lock nut rated GR4, and it's the OEM-spec replacement for Coats tire changers and balancers. The nylon insert grips the threads and stays put under the vibration and torque that shop equipment generates every single day. Standard hex nuts can walk loose over time; the insert prevents that without any secondary locking method. That's the whole point of a lock nut, and this one does the job.
Steel construction with a corrosion-resistant coating means it holds up in a working shop environment without rust becoming a problem down the road. If you're doing a repair and need to replace a fastener, getting the correct part number matters -- off-spec hardware with the wrong thread engagement or insert fit will let you down faster than the original ever did. Coats equipment runs across a wide range of tire changers and balancers, and the 8181183 is the designated replacement fastener for that service work. It's stocked and ready to ship, so you're not waiting on a specialty order to get your machine back together. One nut. Right fit. Back in service.
Specifications
| Part Number | 8181183 |
| Part Type | Nylon Insert Lock Nut |
| Thread Size | 5/16-18 |
| Grade | GR4 |
| Material | Steel with nylon insert |
| Finish | Corrosion-resistant coating |
| Compatible Equipment | Coats Tire Changers and Balancers |
| Application | Tire changer and balancer repair and maintenance |
Ready to Ship
The correct OEM-spec lock nut for your Coats equipment. Add it to your cart and we'll get it moving.
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