12 point screws, also known as 12-point bolts or double hexagon bolts, are a type of fastener characterized by their distinctive head shape, featuring 12 sides or points rather than the more conventional 6-sided hexagonal shape. These screws come in various sizes, specifications, and materials, serving a wide range of industrial and mechanical applications.

At Sino Special Metal, we specialize in providing an extensive range of industrial fasteners, including 12-point screws, tailored to diverse applications across various industries.

Understanding 12 Point Screws

Our 12-point screws, also known as double hexagon bolts, boast a unique head shape with 12 sides, deviating from the traditional 6-sided hexagonal form. These screws are available in an array of sizes to suit specific needs:

– M6: Ideal for machinery and automotive components.

– M8: Commonly used in construction, industrial equipment, and automotive assemblies.
– M10: Suited for heavier-duty applications in machinery and structural components.
– M12 and larger: Employed in robust structures and heavy industrial machinery.

Specifications and Advantages

Our 12-point screws adhere to rigorous standards such as DIN (Deutsches Institut für Normung) or ISO (International Organization for Standardization), ensuring uniformity and compatibility across applications. These specifications include factors like diameter, length, thread pitch, and materials, often stainless steel, alloy steel, titanium, or other high-strength metals.

The advantages of our 12-point screws lie in their design:

– Torque Handling: They excel in managing higher torque levels due to the distribution of force across 12 contact points, reducing the risk of rounding the bolt heads.
– Accessibility: With additional angles for tool engagement, they provide easy access in confined spaces.
– Alignment: These screws offer superior alignment during assembly, minimizing the chances of cross-threading.
– Weight Reduction: In select applications, they might contribute to weight-saving measures due to their lighter nature compared to 6-point screws.

Addressing Controversies

The debate between 6-point and 12-point bolts often arises concerning strength. While 12-point screws offer advantages in torque handling and accessibility, some considerations about their slightly lower strength compared to 6-point bolts exist. However, our screws meet stringent quality standards, ensuring optimal performance in various applications.

Our Commitment and Availability:

At Sino Special Metal, we take pride in our commitment to delivering high-quality 12-point screws that meet or exceed industry standards. Our extensive inventory covers various materials and specifications, catering to the needs of aerospace, automotive, machinery, and other industries.

We ensure prompt and efficient supply chain management, enabling us to meet specific customer requirements with precision-manufactured, reliable 12-point screws. Your satisfaction and the reliability of our products are our top priorities.

12 Point Screw Specifications

1. IFI-115 (Industrial Fasteners Institute Standard 115): Specifies dimensions, materials, and tolerances for 12-point screws, ensuring consistency and quality in their manufacturing.

2. MIL SPEC (Military Specifications): Sets performance, material, and testing standards for 12-point screws, particularly focusing on durability and reliability in military applications.

3. DIN 34822 (Deutsches Institut für Normung 34822): German standard detailing precise dimensions, tolerances, materials, strength, and surface finish for 12-point screws.

4. DIN 34821 (Deutsches Institut für Normung 34821): Another DIN standard specifying thread profiles, pitches, materials, testing, and inspection requirements for 12-point screws.

Availability of 12-Point Screws in Different Materials

1. 17-4 PH: A precipitation-hardening stainless steel with excellent corrosion resistance and high strength suitable for various applications in aerospace, marine, and oil and gas industries.

2. 254 SMO: A high-alloy austenitic stainless steel known for its exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in aggressive environments like seawater and chemical processing.

3. 310SS: An austenitic stainless steel offering high-temperature strength and corrosion resistance, often used in high-temperature applications like furnace parts and heat treatment equipment.

4. A286: A high-strength alloy with excellent oxidation and corrosion resistance at high temperatures, ideal for applications in the aerospace and automotive industries.

5. AL6XN: A super-austenitic stainless steel with superior corrosion resistance in various acidic environments, commonly used in chemical processing and seawater applications.

6. Alloy 20: Known for its resistance to sulfuric acid and other aggressive chemicals, often used in chemical processing, food processing, and pharmaceutical industries.

7. Alloy 330: A nickel-iron-chromium alloy with excellent resistance to carburization, thermal shock, and oxidation at high temperatures, used in furnace components and heat-treating baskets.

8. Alloy 926: A super-austenitic stainless steel with high resistance to pitting and crevice corrosion in aggressive environments containing chlorides.

9. Aluminum 7075: A high-strength aluminum alloy with excellent fatigue resistance, widely used in aerospace and high-performance applications.

10. Duplex Steel: Combines the benefits of austenitic and ferritic stainless steels, offering high strength and corrosion resistance, suitable for applications in chemical processing and marine industries.

11. Hastelloy: A group of nickel-based alloys with exceptional corrosion resistance in various harsh environments, commonly used in chemical processing and aerospace applications.

12. Incoloy: Another nickel-based alloy with good corrosion resistance, high-temperature strength, and excellent oxidation resistance, used in chemical, petrochemical, and marine industries.

13. Inconel: Known for its high-temperature strength and excellent corrosion resistance, widely used in aerospace, gas turbine, and chemical processing industries.

14. Monel: A nickel-copper alloy with high corrosion resistance, particularly in marine environments and chemical processing applications.

15. MP159: A high-strength, corrosion-resistant alloy used in aerospace and industrial applications requiring high strength-to-weight ratios.

16. MP35N: A nickel-cobalt alloy with excellent corrosion resistance, often used in medical devices, aerospace, and marine applications.

17. Nickel 200: Commercially pure wrought nickel known for its excellent corrosion resistance in various environments, particularly in reducing conditions.

18. Nimonic: High-temperature nickel-based alloys suitable for applications in gas turbines, aerospace, and industrial heating systems.

19. Nitronic: Stainless steels with excellent mechanical properties and corrosion resistance, used in applications requiring high strength and corrosion resistance.

20. Titanium: Known for its high strength-to-weight ratio, corrosion resistance, and biocompatibility, commonly used in aerospace, medical implants, and chemical processing industries.

21. Waspaloy: A nickel-based superalloy with high-temperature strength and excellent creep resistance, commonly used in gas turbine engines and other high-stress applications.

These materials offer diverse properties suitable for specific industries and applications, ensuring compatibility with various environmental and mechanical requirements.

In summary, our 12-point screws offer distinct advantages in torque handling, accessibility, and alignment. At Sino Special Metal, we provide these screws in diverse materials and specifications, emphasizing quality, reliability, and customer satisfaction in every product we deliver.