Description
Overview:
These Hex Socket Head Cap Screws are high‐strength fasteners for demanding assemblies in construction and garden machinery. Made from hardened alloy steel to Grade 12.9, they deliver very high clamping force and reliable performance under shock, vibration, and heavy loads. The chemical black finish offers a smart, low‐glare appearance with light corrosion resistance. Size M16 x 40 means a 16 mm metric thread diameter with a 40 mm shank length, suited to robust joints such as frames, brackets, housings, and guards. The socket cap head allows strong tightening in confined spaces using a hex key or hex bit, helping prevent tool slip and damage to surrounding parts. Sold individually, this fastener is a practical choice for repairs, rebuilds, and OEM‐style maintenance across workshops and site work.
Key Features:
- Grade 12.9 steel for very high tensile strength and durability in high‐stress applications
- Socket (Allen) drive for positive engagement and controlled tightening in tight spaces
- Chemical black finish for low glare and light corrosion resistance
- M16 x 40 size (16 mm diameter x 40 mm length) for heavy‐duty joints and fixtures
- Cylindrical cap head provides ample wrench contact and clean, professional fit
- Precision metric thread for consistent preload and reduced loosening under vibration
- Compatible with standard M16 hex keys/bits and matching M16 nuts and washers
- Suitable for construction plant, agricultural and garden machinery, generators, compressors, mixers, and more
- Sold individually to match exact quantity requirements
- Also available in zinc‐plated and stainless variants within wider ranges for different environments
Typical Applications:
Used for securing brackets, engine mounts, gearboxes, pump housings, blade carriers, frames, guards, and fixtures on equipment such as compactors, generators, cement mixers, lawn tractors, mowers, tillers, chippers, and workshop jigs and fixtures. Ideal where a high‐tensile, compact‐head fastener is required and access is limited.
Also known as:
Allen cap screw, socket cap bolt, socket head cap screw (SHCS), hexagon socket head screw, cap‐head bolt, high‐tensile cap screw, DIN 912/ISO 4762 style socket screw.
Product Specifications
| L&S Part No. | 903 0318 |
|---|---|
| OEM No. | 903 0318 25PK |
| Unit of Sale | Each |
| Key Features | - Grade 12.9 steel for high tensile strength - M16 x 40 size for heavy-duty joints - Socket drive allows tightening in confined spaces - Chemical black finish offers light corrosion resistance - Compatible with standard M16 hex keys and bits |
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