

Graco 102087 Nut (Full Hex) is a 5/8-18 UNF jam nut designed for secure locking in hydraulic motor assemblies such as the Viscount II 217022. Ideal for vibration-prone applications where reliable fastening is essential.
OEM fastener specified by Graco as a hex jam nut (full hex, thin pattern) with 5/8-18 UNF thread. It is used to lock an adjacent nut or component to prevent loosening from vibration (common on tie-rod/trip-rod locations in hydraulic motor assemblies).
| Attribute | Detail |
|---|---|
| Part Number | 102087 |
| Description | Nut, Full Hex (hex jam nut, thin pattern) |
| Thread | 5/8-18 UNF (fine thread) |
| Typical Use | Locks the primary nut/assembly on tie-rod or trip-rod locations (e.g., Viscount II hydraulic motor). |
| Known Quantity | Model 217022 (Series E) uses 4 pcs in the assembly. |
| Material | Steel (OEM spec; finish may vary by production run) |