Description
Overview:
These Hex Socket Head Cap Screws are high-tensile fasteners for demanding mechanical assemblies. Manufactured from hardened alloy steel to Grade 12.9, they provide strong clamping force in compact spaces where a spanner head will not fit. The cylindrical head with a recessed hex drive allows reliable tightening with a standard Allen key. Finished in a chemical black coating, they offer a clean, low‐glare appearance and light corrosion resistance. Size M10 x 40 (approx. 0.39 in x 1.57 in), supplied as a pack of 10, they suit repairs and builds on construction equipment, garden machinery, machine tools, pumps, gearboxes and general plant. Use them for precise, rigid joints in steel fabrications, brackets, housings and fixtures where consistent strength and repeatable torque are essential.
Key Features:
- Grade 12.9 alloy steel for very high tensile strength and dependable clamping in heavy-duty joints
- Hex socket head enables access in confined spaces and reduces the risk of tool slip
- Chemical black finish for a neat look and light corrosion protection in indoor or sheltered use
- M10 diameter with 40 mm length for common machinery mounting and bracket fixes (approx. 0.39 in x 1.57 in)
- Precision-formed threads for smooth engagement in tapped holes or when used with a nut
- Cylindrical head provides a large bearing surface for even load distribution with a washer
- Compatible with standard metric Allen keys for quick fitting and removal
- Consistent dimensions and finish across the pack for repeatable assembly results
- Suitable for through-bolting or direct threading into metal components
- Supplied in a pack of 10 to cover multiple fastenings or keep spares on hand
Typical Applications:
Used for assembling machinery frames, securing guards and covers, mounting motors and gearboxes, fixing brackets and jigs, and replacing worn fasteners on mowers, compactors, generators and workshop equipment. Ideal where high preload and alignment accuracy are needed, such as bearing housings, pulleys, flanges, tool holders and precision fixtures in fabrication, maintenance and repair tasks.
Also known as:
Allen bolts, socket head cap screws, hex drive cap screws, Allen cap screws, SHCS, socket screws, cap head bolts, internal hex bolts, cylinder head screws. These terms are commonly used across engineering, automotive, plant and garden machinery contexts to describe the same hex-socket cylindrical head fastener type.
Product Specifications
| L&S Part No. | 903 0305 |
|---|---|
| Unit of Sale | Pack of 10 |
| Key Features | - Grade 12.9 alloy steel for high tensile strength - Hex socket head for access in confined spaces - M10 x 40 mm size for machinery mounting - Chemical black finish for light corrosion resistance - Supplied in a pack of 10 screws |
