Description
Overview:
These metric spring washers are steel split-ring washers with a rectangular section and a zinc-plated finish to resist corrosion. They are designed to maintain tension in bolted joints and help prevent nuts and bolts from loosening under vibration. With a 20 mm internal diameter (I.D.), they suit M20 metric bolts and studs commonly used across construction and garden machinery, including engine mounts, frames, guards, and brackets. The rectangular section offers firm bite and consistent load distribution when clamped under a nut or bolt head. Supplied in a convenient pack of 50, they are suitable for maintenance teams, workshops, and site-based repairs where reliability and repeatable fit are important. Manufacturer Part Number (MPN): 915218.
Key Features:
- 20 mm I.D. to suit M20 bolts and studs for a secure, compatible fit
- Rectangular-section split ring provides stable spring tension under load
- Zinc-plated steel for improved corrosion resistance and service life
- Helps prevent loosening caused by shock, vibration, and thermal cycling
- Even load distribution to support joint integrity and reduce rework
- Simple to fit under standard hex nuts and bolt heads
- Compatible with common metric hardware used in plant and garden equipment
- Consistent dimensions for repeatable assembly across multiple joints
- Suitable for indoor and outdoor applications
- Pack of 50 for convenient stocking and multi-project use
Typical Applications:
Used in bolted joints on construction and garden machinery where vibration is present, such as engine mounts, equipment frames, handle assemblies, guards, brackets, and fixings on mowers, compactors, generators, and pumps. Ideal for maintenance, repair, and assembly tasks in workshops and on site, helping retain preload and reduce loosening over time.
Also known as:
Helical spring washer, split ring lock washer, anti-loosening washer, vibration-resistant washer, M20 spring lock washer, helical lock ring, tension washer, anti-vibration lock ring. These terms are commonly used for split spring washers designed to maintain joint tension and improve fastening reliability in dynamic applications.
Product Specifications
| L&S Part No. | 903 1056 |
|---|---|
| OEM No. | 915218 |
| Unit of Sale | Pack of 50 |
| Key Features | - 20 mm I.D. suits M20 bolts and studs - Rectangular-section split ring for stable tension - Zinc-plated steel resists corrosion - Prevents loosening from vibration and thermal cycling - Pack of 50 for multi-project use |
