304 Stainless Steel Hex Socket Cap Screws | M2-M10 DIN912 Grade 12.9 A2 Bolts | Professional Allen Bolt Kit

This assortment of 304 stainless steel hex socket cap head screws combines the strength of Grade 12.9 with the excellent corrosion resistance of A2 stainless steel. The black hexagon socket design all...
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Questions about this product
- Are these screws solid stainless steel, and will the black finish prevent rust?
- Yes, these are solid AISI 304 stainless steel, which naturally resists rust, oxidation, and mild chemical exposure. The black surface treatment adds extra corrosion protection while giving the fasteners a clean, dark aesthetic. They are highly reliable for both indoor projects and wet outdoor environments.
- How strong are these bolts, and what does the 12.9 grade mean?
- Standard 304 stainless steel provides a tensile strength of approximately 700 MPa, matching the A2-70 rating. The 12.9 grade specification refers to the core strength if you choose the high-tensile coated option. They handle heavy-duty applications well but check your specific load requirements before installation.
- What tools do I need to install and tighten these fasteners?
- You will only need standard metric Allen keys or hex driver bits to tighten these bolts. The deep hexagon socket design lets you apply high torque in tight spaces without stripping. Since they follow the DIN912 standard, your existing metric hex tools will fit them perfectly.
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