Description
Overview:
Mason Mate Socket Set (Grub) Screws in size M8 x 8 are headless fasteners designed to lock components securely against a shaft, hub, or within a threaded hole. Made from quality steel with a chemical black finish, they offer dependable strength with added surface protection against wear and corrosion. The M8 thread (approximately 5/16 inch) and 8 mm length (approximately 5/16 inch) suit a wide range of machinery, automotive, and workshop tasks where a flush fit is required. The internal hex drive allows positive engagement with a standard hex key for controlled tightening in tight spaces. Supplied in a practical pack of 10, these set screws are a straightforward choice for maintenance and assembly on construction equipment, garden machinery, machine tools, and general repairs.
Key Features:
- M8 x 8 mm size (approx. 5/16 inch x 5/16 inch) for common metric threaded housings and collars
- Headless design sits flush with or below the surface to avoid snagging and interference
- Internal hex (Allen) drive for secure, easy installation and removal
- Chemical black finish for enhanced durability and corrosion resistance in everyday environments
- Precision cut threads for a firm hold and repeatable clamping force
- Suitable for securing components on shafts, hubs, gears, pulleys, and couplings
- Versatile across machinery, automotive, fabrication, and workshop use
- Supplied as a pack of 10 for convenient stocking and multi-point fixing
- Compatible with standard M8 threaded holes and fittings
Typical Applications:
Used to lock collars, gears, pulleys, knobs, and couplings to shafts; to secure components inside housings; and to set positions on jigs and fixtures. Common in machine tools, automotive assemblies, garden and construction equipment, conveyors, and plant maintenance where a low-profile, reliable fastener is needed.
Also known as:
Socket set screw, grub screw, headless screw, hex socket set screw, Allen set screw, hex drive grub screw, metric set screw, internal hex screw.
Product Specifications
| L&S Part No. | 903 0358 |
|---|---|
| Manufacturer | Masonmate |
| Unit of Sale | Pack of 10 |
| Size | M8 x 8 |
| Key Features | - M8 x 8 mm size fits common metric threaded housings - Headless design ensures flush fit to prevent snagging - Internal hex drive allows easy installation with hex key - Chemical black finish resists corrosion and wear - Supplied in a pack of 10 for multi-point fixing |


