Graco 101390 Lock Washer Internal
$8.00
In Stock
The Graco 101390 Lock Washer (Internal Tooth) is a genuine OEM fastener designed to prevent loosening under vibration and ensure secure assembly in Graco systems.
- Part Number: 101390
- Type: Internal-Tooth Lock Washer
- Function: Secures bolts and screws against vibration
- Used In: Graco 5 Gallon Duo Sprayer, WB100 Isolation System, ADM Control Interface
- OEM Quality: Genuine Graco hardware for reliable performance
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
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Overview & Compatibility — Graco 101390 Lock Washer (Internal Tooth)
Compatible Machines / Equipment
- Graco 5 Gallon Duo Paint Sprayer (per manual 306713) — internal hardware in displacement pump assembly
- Graco WB100 Isolation System (electrostatic waterborne finishing) — enclosure/mounting hardware
- Graco ADM/Control Interface assemblies (per manual 3A8492) — bracket/electrical mounting hardware
Because this is a small internal hardware item, it may also appear in other Graco assemblies. Always verify by part number in your unit’s parts manual.
Product Summary
Graco 101390 is an internal-tooth lock washer used to secure fasteners and resist loosening from vibration. It is a Genuine Graco OEM hardware item commonly paired with screws/bolts on brackets, interfaces, and pump/motor sub-assemblies.
Specifications & Features
| Part Number | 101390 |
|---|---|
| Type | Lock Washer, Internal Tooth (shake-proof style) |
| Function | Helps prevent fastener back-off under vibration; improves electrical/grounding bite on clean surfaces when required by the assembly. |
| Placement | Between the fastener head (or nut) and the mating surface, as illustrated in the equipment’s assembly diagram. |
| Status | OEM Graco hardware for fit and reliability. |
| Notes | Refer to your specific model’s parts list to confirm quantity and location. |
Installation Tips
- Match the part number and fastener size specified in your manual.
- Place the internal-tooth washer against a clean, flat metal surface for best bite.
- Tighten to the torque specified by Graco for the assembly.
Frequently Asked Questions
It is used across multiple Graco systems, but not every model. Always confirm by checking the parts list for your exact machine.
A generic may physically fit, but using the OEM Graco part ensures correct specification and helps maintain assembly integrity and warranty expectations.
Install it between the fastener head (or nut) and the mounting surface so the teeth bite into the surface when torqued. Follow the diagram and torque in your model’s manual.
Check the exploded parts diagram for your exact model. The diagram lists 101390 where required and shows count per assembly.
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