Description
Overview:
These Hex Socket Head Cap Screws, Grade 12.9, are high‐strength metric fasteners for demanding assemblies in construction, plant, and garden machinery. Made from high tensile alloy steel with a chemical black (black oxide) finish, they provide dependable clamping where space is tight and head clearance is limited. The internal hex drive allows accurate torque using a common Allen key with reduced risk of tool slip. Size M5 x 50 (5 mm diameter, 50 mm length) with a standard M5 coarse thread (0.8 mm pitch), they are suited to mounting brackets, housings, guards, and general machine build. Supplied in a pack of 10 for workshop and site use. Manufacturer Part Number: 903 0285 200PK. Alternative finishes and sizes are available for broader project needs.
Key Features:
- Grade 12.9 high tensile alloy steel for reliable performance in high‐stress joints
- Size: M5 x 50 mm; standard M5 coarse pitch (0.8 mm) for easy matching with metric nuts and tapped holes
- Hex socket drive for positive engagement; commonly uses a 4 mm Allen key
- Chemical black (black oxide) finish for enhanced corrosion resistance versus plain steel
- Cylindrical head with deep socket reduces cam‐out and allows higher tightening torque
- Clean, precise threads support consistent preload and stable clamping
- Pack of 10 for convenient maintenance, spares, and small builds
- Suitable for confined spaces where traditional hex bolts are impractical
- Compatible with standard metric washers, spring washers, and nyloc nuts
- Additional options available: zinc plated and stainless steel; broad size range from M3 x 10 to M24 x 100
Typical Applications:
Used for assembling machine frames, mounting motors and gearboxes, fixing guards and brackets, and securing pulleys, bearings, and couplings. Ideal for repairs and builds on compactors, mixers, generators, pressure washers, lawn mowers, chippers, and tillers. Suitable for jigs and fixtures where accurate, high‐strength clamping is required.
Also known as:
Allen bolts, Allen cap screws, socket cap screws, socket head cap screws (SHCS), internal hex bolts, caphead screws, metric cap bolts, socket screws.
Product Specifications
| L&S Part No. | 903 0285 |
|---|---|
| OEM No. | 903 0285 200PK |
| Unit of Sale | Pack of 10 |
| Key Features | - Grade 12.9 high tensile alloy steel for high-stress joints - Size M5 x 50 mm with standard M5 coarse thread - Hex socket drive uses 4 mm Allen key - Chemical black finish enhances corrosion resistance - Pack of 10 for maintenance and small builds |
