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Graco 101920 Washer Lock

Graco 101920 Washer Lock is a genuine OEM internal shock-proof washer designed to keep fasteners tight under vibration and heavy use.

  • Fits 9/16" screw size applications
  • Used in various Graco valve models like 205435, 205612, and 244382
  • Ensures secure fastening and long-term reliability

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Overview & Compatibility for Graco 101920 Washer Lock

Compatible Machines

This lock washer is used in the following Graco valve models (and other equipment where the same specification applies):

  • Graco Valve Model 205435 (Dispensing Valve)
  • Graco Valve Model 205612
  • Graco Valve Model 244382
  • Graco Valve Model 244384
  • Graco Valve 904227

Product Summary

The Graco 101920 Washer Lock is an OEM lock washer designed to keep fasteners secure under vibration and load. It’s commonly found in Graco dispensing valves and related assemblies requiring a 9/16" screw size lock washer.

Key Features

  • OEM fit and performance for Graco equipment
  • Internal shock-proof design helps resist loosening
  • Sized for 9/16" screw applications
  • Durable metal construction for repeated use environments

Technical Specifications

Part Number 101920
Description Washer, Lock — internal shock-proof, fits 9/16" screw size
Manufacturer Graco (Genuine OEM)
Typical Application Securing fasteners in valves and assemblies subject to vibration/load
Compatibility Note Use wherever the parts manual specifies 101920 or the same spec lock washer

Installation & Use Notes

  • Verify screw size (9/16") and seating surface per your model’s diagram.
  • Inspect and replace if the washer shows wear, deformation, or loss of spring action.
  • Tighten fasteners to the torque specified by Graco for your assembly.

Frequently Asked Questions

It may, if the sprayer assembly specifies an internal shock-proof lock washer for a 9/16" screw size. Check the parts list for your exact model to confirm 101920.

Reuse is not recommended if the washer has lost spring tension or shows deformation. For best retention, replace the lock washer when reassembling critical joints.

Match the washer to the exact specification in your parts manual. If your manual calls for a different size or style, use the listed part instead of 101920.

Yes—Graco 101920 Washer Lock is an OEM part for correct fit and performance.

Check your unit’s parts diagram. Look for the washer line item corresponding to an internal shock-proof lock washer sized for a 9/16" screw, or specifically part 101920.

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