

The Graco 109470 Hex Hd Bolt is a high-strength OEM fastener used in Graco displacement and line-marking pump assemblies. Key points for quick reference:
This OEM hex-head bolt is a critical fastener used in major Graco pump assemblies. Below are the known compatible machines:
Note: Always verify the part number 109470 in your machine’s exploded parts diagram before purchase to ensure compatibility.
| Part Number | 109470 |
|---|---|
| Description | Hex Head Bolt / Screw, 5/8‑11 UNC‑2A × 12 in (305 mm), Stainless Steel |
| Function | Secures major components in displacement and line-marking pump assemblies |
| Typical Quantity | Varies per assembly (e.g., 6 in some displacement pump kits) |
Using the correct OEM bolt ensures proper thread engagement, torque retention, and safe operation of high-pressure pump systems.
*Ensure pumps are depressurized and powered down before maintenance. Always follow specified torque values from your equipment manual when installing fasteners.