

Retaining fastener for a swivel-nut assembly on fluid/hose connections. Use to keep the swivel secure under pressure and vibration—verify fit in your model’s parts list.
This is a model-specific component. Graco does not publish a universal fit list for this part. Please confirm compatibility by checking your sprayer’s parts manual (pump/hoseline swivel assembly) or contact us with your model & serial number for verification.
Graco 166197 Retainer, Swivel Nut
A retaining fastener used within a swivel-nut assembly to secure the joint on fluid or hose connections. It helps keep the swivel in position under operating pressure and vibration, reducing the chance of leaks or loosening at the connection.
| Part Number | 166197 |
|---|---|
| Part Type | Retainer for swivel-nut assembly (fastener) |
| Typical Location | Fluid/hose swivel connection on pump/manifold or hose reel assemblies (varies by model) |
| Install Notes | Inspect mating swivel, threads, and seals; torque per model-specific service manual |