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The Unifix A2-70 Socket Head Cap Screws DIN 912 (M10 x 20) are designed for engineers, contractors, and DIY enthusiasts who require high-strength, corrosion-resistant fastening for industrial and construction projects. These stainless steel fasteners offer exceptional durability and a precise fit, though users must ensure they have the correct metric hex key size to avoid stripping the socket head during installation.
| Colour | Silver |
|---|---|
| Model Part Number | 5014196344232 |
| Brand | Unifix |
A2 refers to the grade of stainless steel (304), and 70 indicates the tensile strength in N/mm².
A2-70 stainless steel is generally considered non-magnetic, though minor magnetism can occur after cold-working the steel during the manufacturing process.
While A2-70 offers good corrosion resistance, it is generally recommended to use A4-70 (316 grade) stainless steel for prolonged exposure to saltwater or harsh chemical environments.
Being DIN 912 compliant, they follow standard dimensions for M10 socket head cap screws, typically featuring a 16mm head diameter.
This specific item package contains 100 high-grade screws.
Back the screw out and verify that the hole is free of debris or burrs, and ensure the thread pitch matches your assembly.
Ensure the hex key is fully seated in the head and verify you are using the correct metric size tool.
To install these screws, ensure you are using a high-quality metric hex key that matches the socket size of the M10 bolt. Always start the thread by hand to prevent cross-threading, especially when fastening into softer aluminum or pre-tapped holes. Do not overtighten beyond the rated torque capacity of the M10 thread to avoid shearing the bolt.
For care and maintenance, keep the screws in their original box in a dry area to prevent debris buildup in the socket. If installing in a high-vibration environment, consider using a thread-locking compound to ensure the fasteners do not loosen over time.
