Description
Overview:
The Hex Socket Head Cap Screws, Grade 12.9, Size M8 x 50 mm, are high‐tensile fasteners for demanding mechanical joints in plant, construction, and garden machinery. Manufactured from alloy steel and heat treated to ISO 898‐1 Grade 12.9, they deliver dependable clamping force where space is tight and strength is critical. The cylindrical socket head uses a standard hex key for positive drive and controlled torque. A chemical black (black oxide) finish provides a clean, low‐glare appearance and light corrosion resistance. Supplied in a pack of 10 for convenient maintenance and assembly work, these screws suit tasks such as securing gearbox housings, mounting brackets, guards, and fixtures on machinery and equipment. MPN reference: 903 0298.
Key Features:
- Grade 12.9 high‐tensile alloy steel for heavy‐duty joints and high clamp loads
- Socket head with internal hex for reliable drive in confined spaces
- Chemical black (black oxide) finish for light corrosion resistance and easy handling
- Metric size M8 x 50 mm for common machinery and fabrication uses
- Precision rolled thread for consistent fit and repeatable tightening
- Clean cylindrical head profile for neat installs and good tool engagement
- Suitable for torque‐controlled assembly and repeat maintenance cycles
- Pack of 10 supports small projects and on‐site spares kits
- Part of a wider range (M3 x 10 to M24 x 100) to match mixed fastener schedules
- Alternative finishes available across the range, including Zinc Plated and Stainless Steel
Typical Applications:
Used for mounting motors, pumps, gearboxes, guards, frames, and fixtures on construction equipment, workshop machines, garden machinery, jigs, and tooling. Ideal where a strong, compact head and accurate torque are required, such as bearing housings, slide assemblies, and precision fabrications.
Also known as:
Allen bolts, socket cap screws, hex socket cap bolts, internal hex cap screws, socket head screws, caphead bolts.
Product Specifications
| L&S Part No. | 903 0298 |
|---|---|
| Unit of Sale | Pack of 10 |
| Key Features | - Grade 12.9 alloy steel for high-tensile strength - M8 x 50 mm size for common machinery use - Internal hex socket head for controlled torque - Chemical black finish for light corrosion resistance - Pack of 10 for maintenance and assembly tasks |


