M6–M12 A2-70 304 Stainless Steel Fine Thread Hex Socket Cap Screws
Details
304 Stainless Steel A2-70 Fine Thread Hex Socket Cap Screws (Allen Bolts)
Upgrade your fastening projects with these precision-engineered 304 Stainless Steel (A2-70) Fine Thread Hex Socket Cap Screws. Available in M6, M8, M10, and M12 thread diameters with pitch options of 0.75, 1, 1.25, and 1.5 mm, these Allen bolts deliver superior holding strength and corrosion resistance for demanding mechanical, industrial, and DIY applications. Made in Mainland China.
Key Features
- Premium 304 Stainless Steel (A2-70): Exceptional corrosion resistance for indoor, outdoor, and marine-adjacent environments.
- Fine Thread Pitch: Tighter thread engagement provides greater clamping force and vibration resistance compared to coarse thread equivalents.
- Hex Socket (Allen) Drive: Internal hex socket head allows secure torque application in confined spaces with a standard Allen key or hex bit.
- Round Cap Head: Low-profile rounded head sits flush and cleanly against surfaces for a professional finish.
- DIN 912 Standard: Manufactured to the internationally recognized DIN 912 specification for consistent dimensional accuracy and interchangeability.
- Multiple Sizes: Available in M6, M8, M10, and M12 diameters — Size = Thread Diameter × Pitch × Thread Length.
- Wide Application: Ideal for machinery assembly, automotive parts, electronics enclosures, furniture, and precision equipment.
Specifications
| Specification | Detail |
|---|---|
| Material | 304 Stainless Steel (A2-70) |
| Standard | DIN 912 Fine Thread |
| Thread Diameters | M6, M8, M10, M12 |
| Pitch Options | 0.75 mm, 1 mm, 1.25 mm, 1.5 mm |
| Drive Type | Hex Socket (Allen Key) |
| Head Style | Round Cap Head |
| Country of Origin | Made in Mainland China |
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Frequently Asked Questions
Q: What is the difference between fine thread and coarse thread hex socket cap screws?
A: Fine thread screws have a smaller pitch (more threads per inch/mm) compared to coarse thread screws. This results in stronger clamping force, better resistance to loosening from vibration, and greater precision in adjustment — making fine thread hex socket cap screws ideal for machinery, automotive, and precision equipment applications.
Q: What does A2-70 mean on stainless steel screws?
A: A2-70 is an ISO designation indicating the grade of stainless steel. "A2" refers to the 304 stainless steel alloy (austenitic, non-magnetic, highly corrosion-resistant), and "70" refers to the minimum tensile strength of 700 MPa. A2-70 hex socket cap screws are strong, durable, and suitable for a wide range of general and demanding fastening applications.
Q: What Allen key (hex key) size do I need for these screws?
A: The required Allen key (hex wrench) size depends on the bolt diameter. Common sizes are: M6 → 5 mm hex key, M8 → 6 mm hex key, M10 → 8 mm hex key, and M12 → 10 mm hex key. Always verify with the product specifications for your specific size selection.
Q: Are these hex socket cap screws suitable for outdoor use?
A: Yes. The 304 stainless steel (A2-70) construction provides excellent resistance to oxidation and corrosion, making these screws well-suited for outdoor, damp, or mildly harsh environments. For highly corrosive or marine environments, A4 (316 stainless steel) fasteners may be more appropriate.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.
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