Description
Overview:
These Hex Socket Head Cap Screws are high‐strength fasteners for precise assembly work in construction and garden machinery, power tools, fixtures, and general engineering. Made from high‐tensile alloy steel to Grade 12.9, they provide excellent tensile and fatigue performance for joints under vibration and load. The chemical black (black oxide) finish helps resist corrosion and reduces glare in service. Size M4 x 10 means a 4 mm diameter with a 10 mm under‐head length, suitable for compact, recessed joints where a cylindrical cap head is preferred. The internal hex drive is typically used with a 3 mm hex key for positive engagement and reduced risk of cam‐out. Supplied as a pack of 10 for convenient workshop stocking. Manufacturer Part Number (MPN): 903 0281.
Key Features:
- Grade 12.9 high‐tensile alloy steel for maximum strength in compact fasteners
- Chemical black finish for added corrosion resistance and a clean, low‐glare appearance
- M4 x 10 size for precise fitting in confined assemblies and counterbored holes
- Accurate metric coarse thread (M4 x 0.7) for reliable, repeatable clamp load
- Internal hex drive (typically 3 mm) for secure tightening in tight spaces
- Cylindrical cap head seats squarely for good load distribution in counterbores
- Consistent manufacturing for dependable torque‐tension performance
- Suitable for use with standard hex keys, torque wrenches, and threadlockers
- Pack of 10 supports routine maintenance and small assembly runs
- Alternative finishes available separately across the range: Zinc Plated and Stainless Steel
- Broad size coverage in the range (e.g. M3 x 10 to M24 x 100) to match varied applications
Typical Applications:
Commonly used for securing guards, brackets, fixtures, pulleys, housings, bearing caps, and machine frames. Ideal for garden and construction equipment, power tools, jigs and fixtures, and general metal‐to‐metal joints where a strong, neat fastener is needed. Suitable for assemblies subject to vibration when installed with correct torque and threadlocker where specified.
Also known as:
Allen bolts, socket head cap screws (SHCS), cap head bolts, internal hex cap screws, socket head bolts, cap screws, DIN 912/ISO‐style socket caps, hex socket cap bolts.
Product Specifications
| L&S Part No. | 903 0281 |
|---|---|
| Unit of Sale | Pack of 10 |
| Key Features | - Grade 12.9 high-tensile alloy steel for maximum strength - Chemical black finish for corrosion resistance - M4 x 10 size for compact, recessed joints - Internal hex drive for secure tightening - Pack of 10 for convenient stocking |
