Description
Overview:
Form C Stainless Steel Washers (large outer diameter) are flat fixing washers for spreading the load of nuts, bolts, and threaded studs. This pack contains 100 washers with a 12 mm inner diameter (approx. 0.47 in), suitable for use with M12 fixings. Made from corrosion‐resistant stainless steel, they perform well outdoors and in damp or abrasive environments found around construction plant, agricultural equipment, and garden machinery. The enlarged outer diameter helps protect softer materials and painted surfaces by reducing point pressure and preventing pull‐through. Use these where a wider bearing face is needed on frames, brackets, base plates, guards, and engine mounts. A practical choice for workshops and site spares, with sizes across the range typically available from 6 mm to 20 mm; this listing is for 12 mm I.D.
Key Features:
- Inner diameter 12 mm (approx. 0.47 in) for M12 bolts and studs
- Form C pattern with large outer diameter for superior load distribution
- Stainless steel for excellent corrosion resistance in outdoor and wet conditions
- Helps prevent surface damage and pull‐through on softer substrates and slotted holes
- Provides a smooth bearing surface to improve joint stability and torque retention
- Suitable for use with steel, aluminium, timber, and plastics when used with appropriate fixings
- Heavy‐duty construction for machinery assembly, maintenance, and repair tasks
- Pack of 100 for convenient stocking in site boxes and workshop bins
- Easy to fit: place under the nut or bolt head to spread clamping force
- Reusable if undamaged, supporting efficient, economical maintenance
Typical Applications:
Load spreading under bolt heads and nuts on machinery guards, engine frames, mounting brackets, base plates, vibration mounts, tow and trailer fittings, deck hardware on mowers, and general fixings where wider support is required. Ideal for construction equipment, agricultural kit, and garden machinery exposed to weather, washdown, or fertiliser.
Also known as:
Flat washer, large O.D. washer, repair washer, penny washer, load‐spreading washer, M12 stainless washer, clamping washer, wide‐face washer.
Product Specifications
| L&S Part No. | 903 0983 |
|---|---|
| OEM No. | 994115 |
| Unit of Sale | Pack of 100 |
| Key Features | - Inner diameter 12 mm for M12 bolts and studs - Form C pattern with large outer diameter - Stainless steel resists corrosion in wet conditions - Pack of 100 for convenient stocking - Suitable for steel, aluminium, timber, and plastics |


