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Graco 101792 Washer Lock

Graco 101792 Washer, Lock is a durable hardware component designed to secure fasteners in place and prevent loosening from vibration. Commonly used across many Graco airless sprayers.

  • Part Number: 101792
  • Type: Lock Washer
  • Used in: Pump mounts, manifolds, frame & guard assemblies
  • Confirmed Fit: Graco EM 390 (Model 231-138)

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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

Part Number 101792
Official Description Washer, Lock
Category Hardware & Fasteners
Function Prevents loosening of fasteners under vibration/pressure
Typical Locations Pump mounts, manifold/filter head brackets, guards, cart/frame assemblies
What’s Included 1 × Lock Washer (101792)
Confirmation Tip Match the part number in your model’s service/parts diagram before ordering

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

Check your model’s service/parts diagram. If it explicitly lists 101792 Washer, Lock at the relevant fastener location, this is the correct part.

Commonly at frame/carry cart hardware, pump mount bolts, and manifold or filter head brackets—areas exposed to vibration.

Yes—this listing is for a single lock washer unless otherwise noted. Order the quantity required by your unit’s diagram.

No. The package includes only the 101792 Washer, Lock. Compatible bolts/nuts are sold separately if required.

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