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The Range£25.33Visit shop Unifix Grade 12.9 Ht Hexagon Setscrews Din 933 S/Col - M16 X 45 - Grey
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The Unifix Grade 12.9 High Tensile Hexagon Setscrews are designed for professional engineers and DIY enthusiasts who require superior load-bearing capacity for demanding construction or mechanical projects. These fasteners provide exceptional strength and reliability, featuring a high-tensile steel construction and a convenient hexagon head for efficient installation; however, users should note that the black finish is not corrosion-resistant and may require additional protective treatment in damp or outdoor environments.
| Colour | Black |
|---|---|
| Model Part Number | 1262573 |
| Brand | Unifix |
Grade 12.9 refers to the mechanical properties of the steel, indicating high-tensile strength suitable for heavy-duty applications.
No, the black finish does not provide significant corrosion resistance. They should be used in dry or indoor environments unless protected.
DIN 933 is a German standard for hexagon head screws with full threading up to the head.
Yes, their high-tensile properties make them suitable for many automotive applications, provided the material and size meet the specific vehicle's requirements.
Yes, using a torque wrench is recommended to ensure you do not exceed the bolt's load limits while ensuring a secure fit.
Check the threads for debris or paint build-up. Ensure the thread pitch matches your application's tapped hole.
Ensure you are using the correct metric socket size and that it is fully seated on the bolt head before applying torque.
Clean the surface and apply a rust-preventative oil or grease. For wet environments, consider using a different grade or material.
Proper installation involves selecting the correct wrench or socket size corresponding to your specific setscrew diameter. Ensure the mating threads are clean and free of debris before insertion to prevent cross-threading. Because these are black-finished high-tensile screws, they lack the passivated protection of stainless steel; if used in environments prone to humidity, consider applying a light coat of machine oil or an appropriate anti-corrosion spray to the threads and head to maintain their longevity.
