Graco 116477 – Nylon Flat Washer
Overview
The Graco 116477 Nylon Flat Washer is an OEM‑supplied flat washer made from nylon — used in Graco fluid‑handling, spraying, or coating equipment assemblies. It provides a non‑metallic, corrosion‑resistant interface under fasteners or between components, helping protect surfaces and ensure proper spacing or sealing in systems where metal washers may cause wear or corrosion. ([parts listing])
Key Features & Properties
- Original Graco part number: 116477 — genuine OEM washer. :contentReference[oaicite:5]{index=5}
- Material: Nylon — offers resistance to corrosion and wear; suitable for fluid, coating, or chemical‑handling environments. :contentReference[oaicite:6]{index=6}
- Flat washer design — provides stable bearing surface under bolts/nuts, distributes load, and protects assembly surfaces from damage.
- Used in assemblies where plastic/nylon washers are preferred over metal (e.g. pump modules, fluid handling, coating systems), to reduce friction, avoid galvanic corrosion or seal damage. :contentReference[oaicite:7]{index=7}
Compatible Machines / Assemblies
No publicly available comprehensive list of Graco models using 116477.
According to one service parts manual, 116477 is listed under certain assemblies within Graco sprayer/pump equipment. :contentReference[oaicite:8]{index=8} To confirm whether it fits your unit, check the parts breakdown or exploded‑view manual of your machine — if it references a “Washer, flat, nylon” or part number 116477, this washer is the correct OEM replacement.
Why Use This Nylon Flat Washer?
This washer is useful when you need to:
- Provide a durable, non‑corrosive washer under bolts/nuts in fluid or coating systems
- Protect surfaces from wear or deformation under fastener clamping pressure
- Use a non‑metallic washer to reduce corrosion, galvanic reactions, or chemical exposure effects
- Ensure proper spacing, sealing and load distribution in assemblies where metal washers may be unsuitable
- Use a genuine OEM part to maintain correct fit, performance, and long‑term reliability
Frequently Asked Questions
Nylon washers resist corrosion and chemical exposure better than many metals, and they offer a non‑metallic interface — useful in fluid, coating or chemical systems where metal washers might corrode or damage seals. :contentReference[oaicite:9]{index=9}
Yes — 116477 is listed as “Washer, flat, nylon” in authorized Graco spare‑parts catalogs. :contentReference[oaicite:10]{index=10}
Replace the washer if it becomes deformed, cracked, worn, or chemically degraded — because a damaged washer may fail to distribute load properly, may compromise sealing, or may lead to leaks or mechanical issues when the assembly is re‑tightened.
