Graco 111640 Internal Lock Washer
Keep your Graco equipment secure and functioning properly with the 111640 Internal Lock Washer. Designed for reliability in pump and enclosure assemblies, it prevents fasteners from loosening.
- Genuine Graco OEM part
- Internal tooth design for secure fastening
- Fits pump assemblies and electrical enclosures
- Easy to install and maintain
Graco 111640 Internal Lock Washer – Compatibility & Details
Compatible Machines
- Graco 235870 Series D Pump Assembly – ref. seat washer item in part list.
- Graco Heated Platens – Models in manual 313296 where part 111640 is used in electrical enclosure assemblies.
- Other Graco equipment specifying “Washer, Lock, Internal” with part number 111640 in their parts breakdown.
Product Overview
The Graco 111640 Internal Lock Washer is a genuine OEM fastener‑lock component designed to prevent loosening of bolts or screws under vibration or dynamic loads. Its internal‑tooth design ensures secure retention in critical assemblies.
Key Features
- Genuine Graco part for correct fit and specification
- Internal‑tooth design bites both fastener and mating surface to resist loosening
- Used in pump and electrical enclosure assemblies where locked fastening is required
- Easy to install during maintenance or refurbishment to ensure reliable assembly
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 111640 |
| Description | Washer, Lock, Internal Tooth |
| Application | Securing fasteners in pump and enclosure assemblies |
| Manufacturer | Graco |
Installation & Maintenance
To install the Graco 111640 Internal Lock Washer, position it under the screw or nut head with the internal teeth facing the mating surface. Ensure the fastener is tightened to the manufacturer‑specified torque to fully engage the lock washer. Inspect the washer during service intervals and replace if the teeth are flattened or the washer shows signs of deformation.
Frequently Asked Questions
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