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Graco 100694 Lock Washer

The Graco 100694 Lock Washer is a genuine OEM hardware part designed to prevent loosening under vibration in Graco spray systems.

  • Part Type: Lock Washer (7/16" internal, shake-proof)
  • Used In: Relax-A-Valve Assembly (206280)
  • Fits: President 10:1 Air Spray Systems – Models 205627 & 205628
  • OEM Quality: Ensures secure fastener retention and long service life

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Graco 100694 Lock Washer — OEM Hardware Detail

Genuine Graco 100694 Lock Washer used in specific Graco assemblies to resist loosening from vibration. Size callout: 7/16" internal, shake-proof.

Compatible Machines

Verified from Graco parts literature. If your unit’s parts list shows 100694, this washer fits.

  • Graco President 10:1 Ratio Air Spray System — Model 205628 (Series H) (via Relax-A-Valve assembly 206280)
  • Graco President 10:1 Ratio Air Spray System — Model 205627 (Series H) (via Relax-A-Valve assembly 206280)
  • Relax-A-Valve Assembly — Model 206280 (sub-assembly that lists part 100694)

Part Overview

Part Number 100694
Description Washer, Lock — internal, shake-proof
Nominal Size 7/16" (internal)
Typical Location Used within the Relax-A-Valve components of President 10:1 systems
OEM Status Genuine Graco replacement hardware

Why Choose the OEM Lock Washer?

  • Maintains clamp load under vibration and thermal cycles.
  • Matches Graco specifications for thickness, hardness, and bite.
  • Helps protect assemblies like the Relax-A-Valve from loosening over time.

How to Verify Fit

  1. Open your sprayer’s parts list or exploded diagram.
  2. Confirm the lock washer line item is 100694 (7/16" internal, shake-proof).
  3. If your list shows a different lock washer (e.g., 100020), order that exact part number instead.

Frequently Asked Questions

It provides shake-proof retention under nuts/bolts to resist loosening from vibration, particularly in the Relax-A-Valve assembly used on President 10:1 systems (size: 7/16" internal).

No. Graco lock washer part numbers denote specific sizes and profiles. Always match the number printed in your machine’s parts list. If your diagram calls out 100694, use 100694.

It’s strongly recommended to use Genuine Graco hardware to maintain specification, performance, and warranty alignment. Non-OEM hardware may not meet the correct thickness/hardness or bite profile.

Within the Relax-A-Valve assembly (206280) on the President 10:1 Air Spray System families, per Graco’s parts list documentation.

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