Description
Overview:
These 1/2" UNF x 4" zinc plated high-tensile steel bolts are designed for strong, reliable fastening in machinery and equipment. Made from grade 8.8 steel with a protective zinc finish, they offer good resistance to corrosion in workshop, site, and outdoor settings. The fine UNF thread provides a secure hold where vibration resistance and precise clamping are important. Each bolt has a thread length of 4" (101.6 mm) and a nominal diameter of 1/2" (12.7 mm). Suitable for construction plant, agricultural and garden machinery, trailers, automotive repair, and electrical assemblies. Manufactured to BS 1768 for UNF fasteners, they are supplied as a 25-pack for consistent replacements across multiple fixings. Manufacturer Part Number (MPN): 955 210.
Key Features:
- Size: 1/2" UNF diameter (12.7 mm) with 4" thread length (101.6 mm)
- High tensile steel, property class 8.8, for robust fastening under load
- Zinc plated finish for enhanced corrosion resistance and long service life
- Manufactured to BS 1768 for dimensional and threading consistency
- Fine UNF thread for secure clamping and improved vibration resistance
- Supplied in a pack of 25 to cover multiple fixings and spares
- Compatible with matching 1/2" UNF nuts and washers (sold separately)
- Suitable for site use, workshop maintenance, and equipment assembly
- Smooth, consistent threads to aid quick installation and removal
- Silver-coloured zinc finish for easy identification in the toolbox
Typical Applications:
General fastening on construction equipment, garden machinery, trailers, fabrications, brackets, guards, engine accessories, and electrical panels. Common in repairs, rebuilds, and new assemblies where a fine-thread UNF bolt is specified. Suitable for indoor and outdoor use, including damp or mildly corrosive environments, when used with appropriate washers and nuts.
Also known as:
UNF fine-thread bolts, 1/2" UNF set bolts, high tensile bolts, zinc plated fasteners, machine bolts, fixing bolts, steel fixings, threaded fasteners, 8.8 bolts, UNF fixings, construction bolts.
Product Specifications
| L&S Part No. | 955 210 |
|---|---|
| Unit of Sale | 25 Pack |
| Size | 1/2 UNF x 4 |
| Key Features | - 1/2" UNF diameter, 4" thread length - Grade 8.8 high tensile steel for strength - Zinc plated for corrosion resistance - Manufactured to BS 1768 standard - Supplied in a 25-pack for multiple uses |
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