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The Range£8.87Visit shop Unifix Grade 4.8 Allthreads Din 976-1-A Bright Zinc Plated - M12 X 80 (Box Of 10) - Silver
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The Unifix Grade 4.8 Allthreads DIN 976-1-A are professional-grade threaded rods designed for builders, mechanics, and DIY enthusiasts requiring reliable structural fastening. These studs provide excellent strength and durability for general mechanical and construction projects, featuring a bright zinc-plated finish for added protection. While these fasteners are highly versatile and easy to install, users should note that they are rated as Grade 4.8, which is suitable for standard structural applications but may not meet requirements for high-tension or heavy-duty industrial load-bearing scenarios.
| Colour | Silver |
|---|---|
| Model Part Number | DIN 976-1-A |
| Brand | Unifix |
Grade 4.8 refers to the mechanical properties of the steel, indicating a nominal tensile strength of 400 MPa and a yield strength that is 80% of the tensile strength.
They can be used outdoors in sheltered conditions, but for coastal or highly corrosive environments, stainless steel alternatives would be more appropriate.
Grade 4.8 steel is typically cold-worked and does not require the extensive heat treatment found in high-tensile grades like 8.8 or 10.9.
While it is possible to weld them, doing so will destroy the zinc-plated finish and may compromise the structural properties of the steel in the heat-affected zone.
Use a hacksaw with a fine-toothed blade. It is recommended to thread a nut onto the rod before cutting, so when you remove the nut after cutting, it helps clean up the threads.
This standard specifies the dimensions and tolerances for metric threaded rods, ensuring that they conform to universal manufacturing expectations for fit and quality.
Check the end of the stud for burrs or damage; use a file to clean the threads or a thread restorer die.
Verify the bolt diameter matches the hole clearance specifications and use an appropriate size washer to distribute pressure.
The bright zinc coating may have been scratched during installation; treat affected areas with a cold-galvanizing spray or rust-inhibitor paint.
To install these allthreads, simply measure your required length and cut using a hacksaw or bolt cutter if necessary, ensuring to deburr the edges to prevent cross-threading. Ensure your nuts and washers match the specific metric size of the stud (e.g., M8 studs require M8-rated hardware). To maximize the lifespan of the bright zinc plating, avoid using aggressive chemical cleaners or abrasive scouring pads. If the studs are used in a damp environment, consider applying a thin layer of machine oil or silicone spray to the threads periodically to inhibit surface oxidation. Store the remaining studs in a dry, low-humidity area to keep the zinc finish intact.
