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The Grade R BSW Hexagon Setscrews are designed for professionals and DIY enthusiasts requiring robust fastening solutions for high-tensile applications. Manufactured to BS 1083 standards, these screws offer exceptional durability and strength for demanding mechanical projects. While they provide excellent reliability, users should ensure they are working with compatible BSW-threaded components to avoid cross-threading or improper fits.
| Colour | Black |
|---|---|
| Model Part Number | 1263505 |
| Brand | Unifix |
Grade R refers to the mechanical property classification of the steel, indicating a high-tensile strength suitable for heavy-duty fastening.
No, these are BSW (British Standard Whitworth) threads and are not compatible with metric fasteners.
The black finish provides some corrosion resistance, but for long-term outdoor exposure, you may need additional anti-corrosion treatments or lubrication.
A standard hexagon spanner or socket wrench of the appropriate size for the specific bolt diameter.
These are manufactured to BS 1083 standards.
Check the thread match. Ensure the hole is clear of debris or rust. Never force a screw that does not turn smoothly.
Ensure the socket or wrench size is a perfect fit. Using a worn tool can damage the hexagon flats.
To ensure optimal performance, always verify that your tapped holes match the specific BSW thread pitch of the setscrew. Begin installation by hand-threading the screw into the hole for the first few turns to ensure it is properly seated; this prevents cross-threading. Once engaged, use a correctly sized spanner or socket wrench to tighten the fastener to the manufacturer's recommended torque. To maintain the integrity of the finish and prevent surface rust, keep the screws in a dry, low-humidity environment and avoid using abrasive cleaning agents that could strip the protective coating.
