Description
Overview:
Hex Socket Head Cap Screw in size M12 x 50 for high‐strength joints in machinery, plant, and equipment. Made from high tensile steel to Grade 12.9, it provides reliable clamping where space is tight and a standard hex bolt head will not fit. The cylindrical cap head takes a hex (Allen) key or bit, allowing controlled tightening and clean installation in counterbored holes. A chemical black finish offers a neat appearance and a degree of corrosion protection. Supplied individually (each), this M12 x 50 fastener suits repairs, rebuilds, and new assemblies across construction, engineering, agricultural, and garden machinery. Manufacturer Part Number: 903 0312.
Key Features:
- Grade 12.9 high tensile steel for very high clamp loads in demanding assemblies
- M12 x 50 metric sizing for common plant and machinery fixings
- Hex socket drive for positive engagement and reduced risk of rounding compared with external hex heads
- Cap head profile fits counterbored holes and tight spaces, improving access with tools
- Chemical black finish for a tidy look and added surface protection
- Precision-machined head and threads for consistent fit and repeatable torque application
- Compatible with standard metric hex keys and hex bit sockets for quick installation
- Ideal for service replacements or new builds; supplied singly so you can buy exactly what you need
- Suitable for use with plain or spring washers and thread‐locking compounds where specified
- Commonly used where a flush or semi‐flush head is required without using a countersunk screw
Typical Applications:
Used for assembling and repairing machinery frames, engine and gearbox brackets, guard rails, couplings, jigs and fixtures, and mounting accessories on construction plant and garden equipment. Suitable for workshop, factory, and site environments, including vibrating or high‐load joints when installed to the correct torque and with appropriate washers or thread locker.
Also known as:
Allen bolt, socket head cap screw, SHCS, hex socket screw, cap head bolt, socket cap bolt, Allen cap screw, internal hex bolt. These terms are often used interchangeably for this style of cylindrical cap head fastener driven by an internal hex key.
Product Specifications
| L&S Part No. | 903 0312 |
|---|---|
| Unit of Sale | Each |
| Key Features | - Grade 12.9 high tensile steel for high clamp loads - M12 x 50 metric size for machinery fixings - Hex socket drive reduces rounding risk - Cap head fits counterbored holes in tight spaces - Chemical black finish offers corrosion protection |
