Graco 18B490 Washer, Flat Finish Grade 9 .375"
High-strength flat washer engineered to distribute load evenly and improve fastening stability in Graco equipment assemblies under heavy vibration.
- Graco OEM Part: 18B490 Washer, Flat Finish Grade 9 .375"
- Grade 9 construction for high-load durability
- Reduces bolt stress and surface wear
- Compatible with Graco LineLazer 3400, 3900, 5900, and 200HS
High-Strength Flat Washer for Secure Load Distribution in Equipment Assemblies
Compatible Machines
| Machine Model | Equipment Type | Compatibility Details |
|---|---|---|
| Graco LineLazer 3400 | Line Striping System | Provides load distribution in frame and pump assemblies |
| Graco LineLazer 3900 | Line Striping System | Supports bolt tension and vibration resistance |
| Graco LineLazer 5900 | High-Performance Striper | Ensures secure fastening under heavy operational loads |
| Graco LineLazer 200HS | High-Output Striping Equipment | Maintains structural stability in critical assemblies |
Product Overview
The Graco 18B490 Washer, Flat Finish Grade 9 .375" is a high-strength OEM flat washer designed to distribute load evenly and enhance fastening stability within compatible Graco equipment assemblies.
Manufactured to Grade 9 specifications, this washer helps reduce surface stress, prevent bolt loosening, and improve the durability of connected components under vibration and heavy-duty operational conditions.
Built to Graco OEM standards, it ensures precise fitment, corrosion resistance, and long-term reliability in professional line striping and surface preparation equipment.
Key Features
- Genuine Graco OEM flat finish washer
- Grade 9 high-strength construction
- .375" specification for precise fitment
- Distributes load to reduce bolt stress
- Enhances vibration resistance in assemblies
Importance of High-Strength Washers
Flat washers play a critical role in preventing fastener damage and ensuring even load distribution across mechanical joints. Without proper washers, bolts may loosen or cause surface deformation over time.
Using OEM-grade washers improves fastening reliability, extends component lifespan, and maintains structural integrity in high-vibration industrial equipment.
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