Description
Overview:
Form C Flat Washers with a 12 mm inner diameter are robust, zinc‐plated steel plain washers designed to spread the load of nuts, bolts and set screws, reducing the risk of damage to mating surfaces. The Form C pattern provides a larger outside diameter than standard patterns to increase bearing area, helping to prevent pull-through on softer materials and to maintain joint integrity under vibration. Suitable for use with M12 fasteners, they are common across construction equipment, garden machinery, plant, trailers and general fabrication. The bright zinc plating gives reliable corrosion resistance for indoor and outdoor use. Supplied in a bulk pack of 250, these washers are a practical choice for workshop stock, site kits and maintenance teams handling frequent assembly and repair work.
Key Features:
- Form C pattern with larger OD for improved load distribution and surface protection
- 12 mm I.D. suitable for use with M12 bolts, studs and set screws where a 12 mm clearance is required
- Zinc-plated steel for durable corrosion resistance in damp or outdoor environments
- Smooth, flat bearing faces help maintain clamping force and reduce loosening
- Helps prevent marking, fretting and pull-through on painted, timber or softer metal surfaces
- Consistent thickness for reliable torque settings and joint performance
- Versatile fit for construction, agricultural and garden machinery assemblies
- Supplied in a cost-effective bulk pack of 250 for workshop and site use
- Silver finish aids quick visual identification in kits and bins
- Easy to fit and remove; reusable if undamaged
- Manufacturer reference: MPN 915185 for ordering and stock control
Typical Applications:
General fastening tasks using M12 hardware, including mounting brackets, engine guards, covers and frames on mowers, compactors and generators; fixing accessories to chassis members; timber and metal fabrication; machinery repairs; racking and plant installations; and any joint where additional bearing area is needed to protect the substrate and maintain clamping force.
Also known as:
Plain washers, Form C washers, large OD washers, M12 flat washers, load‐spreading washers, bearing washers, spacer washers and shims (for light spacing and alignment tasks). These terms are commonly used across maintenance and fabrication when referring to flat washers that provide a wider contact area under a fastener head or nut.
Product Specifications
| L&S Part No. | 903 0884 |
|---|---|
| OEM No. | 915185 |
| Unit of Sale | Pack of 250 |
| Key Features | - Form C pattern with larger OD for load distribution - 12 mm I.D. for M12 bolts and screws - Zinc-plated steel for corrosion resistance - Bulk pack of 250 for frequent use - Suitable for construction and machinery assemblies |
