Description
Overview:
These Hex Socket Head Cap Screws are high-strength fasteners for critical assemblies in construction, plant, garden machinery, and general industrial use. Made from Grade 12.9 alloy steel with a chemical black (black oxide) finish, they provide strong clamping force and dependable performance under high load. The M12 x 80 size suits standard M12 tapped holes and nuts, and the internal hex drive allows positive engagement with an Allen key or hex bit, making installation straightforward even in tight spaces. The black finish reduces glare and offers added protection against wear. Supplied individually (each), they are suitable for repairs, rebuilds, and new builds where reliability matters, such as mounting brackets, frames, engines, gearboxes, and fixtures on equipment ranging from compact mowers to industrial machinery.
Key Features:
- Grade 12.9 alloy steel for very high tensile strength and secure clamping under load
- Chemical black finish for a clean look and added wear protection (light corrosion resistance)
- Hex socket head for positive drive, reduced cam-out, and access in confined areas
- M12 x 80 metric size compatible with standard M12 nuts and tapped holes
- Precise manufacturing for consistent fit and preload when torqued correctly
- Suitable for use with hand Allen keys, hex bit sockets, or torque tools
- Reliable choice for machinery, automotive, and industrial assemblies
- Black colour helps identify high-tensile fasteners in mixed hardware kits
- Supplied as single units, convenient for replacement and maintenance tasks
- Zinc-plated and stainless alternatives are commonly used where higher corrosion resistance is required
Typical Applications:
Used for assembling and securing machine frames, brackets, engine and gearbox mounts, pump and motor flanges, jigs and fixtures, and structural components on construction equipment, agricultural and garden machinery, and industrial plant where high strength and repeatable clamping are essential.
Also known as:
Allen bolts, socket cap screws, hexagon socket head cap screws, socket screws, SHCS, Allen cap bolts, internal hex bolts, cap head bolts, high-tensile socket screws.
Product Specifications
| L&S Part No. | 903 0315 |
|---|---|
| OEM No. | 903 0315 50PK |
| Unit of Sale | Each |
| Key Features | - Grade 12.9 alloy steel for high tensile strength - M12 x 80 size fits standard M12 nuts and holes - Hex socket head allows access in confined areas - Chemical black finish offers light corrosion resistance - Supplied individually for convenient maintenance tasks |
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