Description
Overview:
These Hex Socket Head Cap Screws are a high-tensile fastener for heavy-duty use in construction and garden machinery. This listing is for size M20 x 50 mm (0.79 x 1.97 inches), made to Grade 12.9 for strong clamping and dependable performance under load and vibration. Manufactured from robust alloy steel with a chemical black finish, they are suitable for securing frames, brackets, gear housings and other critical assemblies where space is limited. The internal hex drive allows controlled torque using a hex key for fast, safe installation and removal. Sold individually, they are a practical choice for workshop spares and on-site repairs. Alternative finishes such as zinc plated and stainless steel versions are commonly used where extra corrosion resistance is required.
Key Features:
- High-tensile Grade 12.9 steel for reliable clamp load in demanding applications
- Size M20 x 50 mm (0.79 x 1.97 inches) for heavy-duty joints on machinery and equipment
- Hex socket head enables high torque transfer with a hex/Allen key in tight spaces
- Chemical black (black oxide) finish to reduce glare and provide basic corrosion protection
- Clean head profile sits neatly in counterbored holes for a tidy, snag-free finish
- Accurate metric thread and shank for consistent fit and repeatable tightening
- Easy to install and remove for maintenance, rebuilds and retrofits
- Sold individually to match exact repair quantities and minimise waste
- Options across the range include zinc plated and stainless steel for harsh environments
- Broad series availability typically from M3 x 10 up to M24 x 100 for matching fasteners across a build
Typical Applications:
Used to fasten structural brackets, frames, guards, hydraulic component mounts, gearbox and motor housings, couplings, pulleys, mower decks, compact tractor attachments and general plant fixings. Suitable for workshop builds, field repairs and scheduled maintenance across excavators, mowers, compact tractors, compressors and other powered equipment where strong, compact fasteners are preferred.
Also known as:
Allen bolt, socket cap bolt, internal hex bolt, SHCS (socket head cap screw), hex drive bolt, machine bolt with hex socket head, hex recess bolt.
Product Specifications
| L&S Part No. | 903 0322 |
|---|---|
| OEM No. | 903 0322 25PK |
| Unit of Sale | Each |
| Key Features | - High-tensile Grade 12.9 steel for strong clamping - Size M20 x 50 mm for heavy-duty machinery joints - Hex socket head allows high torque with hex key - Chemical black finish for basic corrosion protection - Sold individually to match exact repair quantities |
