Description
Overview:
The Metric Left Hand Threaded Nut (M8) is a hexagonal steel fastener with a left-hand (anti-clockwise tightening) metric thread, supplied in a self-colour plain finish. It is designed for assemblies where a standard right-hand nut could loosen due to operational direction or vibration, such as rotating machinery and driven equipment. Suitable for construction tools, garden machinery, plant equipment, and general engineering tasks, it provides a precise, secure fit when paired with M8 left-hand threaded bolts or studs. The self-colour finish offers a clean, bare-metal appearance and is easy to paint or coat if needed. Sold individually for convenience, this nut is a practical replacement part or a reliable choice for new builds. Manufacturer Part Number (MPN): 903 0821.
Key Features:
- Left-hand metric thread (M8) for reverse-threaded assemblies where rotation might undo standard fixings
- Hex profile for straightforward tightening with a spanner or socket
- Self-colour (plain steel) finish for accurate fit and consistent torque without coating build-up
- Precision-cut threads for secure clamping and dependable alignment
- Durable steel construction suitable for workshop and site environments
- Sold individually so you can buy exactly what you need for maintenance or repairs
- Compatible with M8 left-hand threaded bolts, studs, and mating components
- Suitable for post-finishing (painting/plating) if corrosion protection is required
- Useful on assemblies that rotate clockwise under load to resist self-loosening
- Clean, professional appearance for machinery assembly and equipment repairs
Typical Applications:
Used on machinery and equipment where reverse threading is required, including mower blade drives, pulley hubs, augers, grinders, couplings, conveyors, and certain wheel or shaft fixings. Ideal for garden machinery, plant and construction equipment, agricultural implements, and general workshop projects where vibration and rotation demand a left-hand fastening solution.
Also known as:
Left-hand hex nut, LH thread nut, reverse-thread nut, anticlockwise nut, counterclockwise nut, left-hand fastening nut, reverse hex nut, LH metric nut.
Product Specifications
| L&S Part No. | 903 0821 |
|---|---|
| Unit of Sale | Each |
| Size | M8 |
| Key Features | - M8 left-hand metric thread for reverse-threaded assemblies - Hex profile for easy tightening with spanner or socket - Self-colour steel finish allows post-finishing if needed - Precision-cut threads ensure secure clamping and alignment - Compatible with M8 left-hand threaded bolts and studs |
