Description
Overview:
These Hex Socket Head Cap Screws are high‐tensile fasteners for secure assembly in machinery, equipment, fixtures, and fabrications. Made from alloy steel to Grade 12.9 specification with a chemical black (black oxide) finish, they offer strong clamping force and good wear resistance. The internal hex drive allows positive engagement with a hex key or bit in confined spaces. Size: M12 x 70 mm (approximately 0.47 in x 2.76 in). The cylindrical socket head seats neatly in counterbored holes for a tidy, flush fit. Suitable for construction plant, industrial machinery, garden and grounds-care equipment, and general engineering repairs where reliability and repeatable torque are important. This listing is for single screws to help you buy exactly the quantity you need; other finishes such as zinc plated or stainless variants may be available separately for different environments.
Key Features:
- Grade 12.9 high‐tensile alloy steel for demanding, high‐load joints
- Chemical black finish for improved wear and corrosion resistance
- Size M12 x 70 mm (approx. 0.47 in x 2.76 in) for common machinery fixings
- Hex socket drive for secure tightening with standard hex keys or bits
- Compact cylindrical head suits counterbored holes and tight clearances
- Precision‐made shank and thread for consistent clamping and alignment
- Suitable for hand or power tool installation with correct torque control
- Sold individually for flexible maintenance, spares, and production use
Typical Applications:
Used in assembling and repairing machine frames, brackets, guards, gearboxes, pump housings, engine accessories, hydraulic components, fixtures, and jigs. Common on compactors, generators, mixers, mowers, chippers, conveyors, and workshop machinery. Ideal where high strength, accurate alignment, and a neat head profile are required, including retrofits and replacements during scheduled servicing.
Also known as:
Allen bolt, Allen cap screw, socket head cap screw, socket cap bolt, internal hex screw, SHCS, cap head screw, cylinder head screw, DIN 912 bolt, ISO 4762 cap screw. These terms are widely used interchangeably for this internal‐hex, cylindrical‐head fastener style.
Product Specifications
| L&S Part No. | 903 0314 |
|---|---|
| OEM No. | 903 0314 50PK |
| Unit of Sale | Each |
| Key Features | - Grade 12.9 high‐tensile alloy steel for high‐load joints - Chemical black finish enhances wear and corrosion resistance - Size M12 x 70 mm fits common machinery fixings - Hex socket drive allows secure tightening with hex keys - Compact cylindrical head fits counterbored holes neatly |


