Graco 100985 Extension Lock Washer

The Graco 100985 Extension Lock Washer is a genuine OEM external lock washer designed for secure fastening within Graco airless sprayers and striping systems. It prevents loosening in high-vibration assemblies like the bearing or drive housing.

Part Number: 100985
Type: Extension / External Lock Washer
Used In: Bearing & Drive Housing Assemblies
Fits: Ultra Max II 695, 795, 1095, 1595 & RoadLazer RoadPak
OEM Quality: Genuine Graco Replacement Part

$9.23

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Description

Compatibility & Technical Details for Graco 100985

Compatible Machines

The Graco 100985 Extension Lock Washer appears in the bearing/drive housing hardware of these machines/assemblies:

Graco Ultra Max II 695
Graco Ultra Max II 795
Graco Ultra Max II 1095
Graco Ultra Max II 1595
Graco RoadLazer RoadPak (Models 24G624 / 24G625)

What is Graco 100985?

The Graco 100985 Extension Lock Washer (also noted as Washer, Lock, External) is a genuine OEM lock washer used to secure fasteners within the bearing housing / drive housing area of select airless sprayers and striping systems. Its serrated profile helps resist loosening caused by vibration and load cycling.

Quick Specs

Attribute	Detail
Manufacturer	Graco
Part Number	100985
Common Name	Extension / External Lock Washer
Typical Location	Bearing Housing / Drive Housing latch & related hardware
Function	Prevents fastener loosening from vibration; maintains assembly clamping force
Genuine OEM	Yes – for listed Graco machines/assemblies

When to Replace

Visible wear, flattening, or broken serrations on the lock washer
Fasteners in the bearing/drive housing repeatedly work loose
Any time related hardware is removed as part of service (best practice)

Frequently Asked Questions — Summary

No. Use the specific lock washer called out in your model’s parts list. Different diameters or tooth patterns can alter clamping and may lead to loosening or damage.

Commonly in bearing housing / drive housing latch and related hardware on Ultra Max II sprayers and in select RoadLazer RoadPak assemblies (see Compatible Machines list above).

Follow the Graco service manual for your machine. Many bearing/drive housing fasteners rely on mechanical locking (like this washer). If threadlocker is specified by the manual, use the correct grade and torque.

Flattened/rounded teeth, corrosion, deformation, or recurring fastener loosening after proper torque are indications to replace the lock washer.