Graco 104008 Spring Lock Washer

The Graco 104008 Spring Lock Washer is a genuine OEM hardware part designed to keep bolts secure under vibration and movement in professional-grade airless sprayers.

Prevents loosening of fasteners during operation.
Used in GMAX II 5900 and GMAX II 5900HD sprayers.
Durable, corrosion-resistant steel for reliable performance.
Graco OEM quality ensures precise fit and long service life.

$15.95

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Description

Overview & Compatibility — Graco 104008 Spring Lock Washer

Compatible Machines

This genuine OEM washer appears in parts lists for the following Graco sprayers. Always confirm against your unit’s parts diagram by model and serial.

GMAX II 5900
GMAX II 5900HD

About the Part

The Graco 104008 is a spring lock washer used to help prevent fasteners from loosening under vibration. It is listed in Graco documentation as “Washer, lock, spring” and is commonly used in high-duty airless sprayers such as the GMAX II 5900 series.

Quick Facts

Graco Part #	104008
Description (Graco)	Washer, lock, spring
Function	Maintains tension under a bolt/screw to resist loosening from vibration.
Typical Qty on GMAX II 5900	Often 4 used in assemblies (verify per your exact model/diagram).
Category	Genuine Graco OEM hardware

FAQs

It’s a Graco OEM part specified for certain assemblies. While generics may look similar, use the OEM number listed in your machine’s parts diagram to ensure correct fit and performance.

Match 104008 with your machine’s official parts list by model and serial. If your diagram lists 104008 at the required position, it’s the correct washer.

Many 5900 assemblies show 4 total, but this can vary. Always follow the exact quantity shown in your specific assembly diagram.

Depressurize and power off the sprayer, replace washers that are flattened or corroded, and tighten to the torque spec in the Graco manual.