

5/16-inch external tooth lock washer designed to prevent fastener loosening in high-vibration spray and fluid handling equipment.
| Compatible Equipment | Application Area |
|---|---|
| Graco Airless Paint Sprayers | Fastener locking and vibration resistance |
| Graco Industrial Coating Systems | Mechanical component retention |
| Graco E-Flo Pump Assemblies | Secure hardware fastening |
| Graco Fluid Handling Equipment | Electrical grounding and locking support |
| Graco Spray Foam & Finishing Equipment | High-vibration connection stability |
| Industrial Pump & Motor Mounting Systems | Bolt retention and anti-loosening support |
The Graco ECLW.312 Washer, External Tooth Lock, 5/16 Zinc Finish is a precision fastening component designed to improve bolt retention and prevent loosening caused by vibration or repeated equipment movement. The external tooth lock design creates additional gripping force between the fastener and mounting surface, helping maintain secure mechanical connections in demanding industrial environments.
Manufactured with a durable zinc finish, the washer provides enhanced corrosion resistance for extended service life in paint spraying, coating, and fluid handling systems. Its 5/16-inch sizing makes it suitable for a wide range of Graco equipment assemblies and industrial fastening applications.
This external tooth lock washer is commonly used in pump mounts, motor assemblies, spray system frames, and fluid handling equipment where vibration resistance and secure fastening performance are essential for safe and reliable operation.
| Part Number | ECLW.312 |
|---|---|
| Component Type | External Tooth Lock Washer |
| Washer Size | 5/16 Inch |
| Finish | Zinc-Plated |
| Material | Industrial-Grade Steel |
| Primary Function | Fastener locking and vibration resistance |
| Application Type | Industrial spray and fluid handling systems |
| Installation Area | Bolted equipment assemblies and mounting points |