Graco 101792 Washer Lock

Compatible Machines

• Graco EM 390 — Model 231-138 (Series A), confirmed “Lockwasher” location
• Also used across many Graco airless spray units (frame hardware, pump mounts, manifold/filter head brackets). Please confirm in your unit’s parts list.

About the Part

The Graco 101792 Washer, Lock is a spring-style lock washer used as hardware (not a fluid-path component) to resist loosening under vibration around brackets, guards, manifolds, and cart/frame assemblies on various Graco sprayers.

Key Specifications

Fitment Notes

• Because this is a general-use hardware item, it appears on multiple Graco models; always verify against your exact unit diagram.
• If your manual lists 101792 at a specific bolt location, this washer is the direct replacement.
• For assemblies using multiple lock washers, confirm quantity needed per your machine’s schematic.

Frequently Asked Questions