RAYCHIN LIMITED, we are materials experts who focus only on fasteners made from the highest performance specialty metals for the most challenging and extreme applications.

• Stainless Steel Series: Martensitic Stainless Steel, Ferritic Stainless Steel, Austenitic Stainless Steel, Austenitic-Ferritic (Duplex) Stainless Steel and Precipitation Hardening Stainless Steel.

• Super Alloys Series: Nickel-based Alloy, Cobalt-based Alloy, Iron-based Alloy, Molybdenum-based Alloy, ‌Titanium-based Alloy, Copper based Alloy, ‌Zirconium Alloy.

• Alloy Steel Series: Low Alloy Steel, Medium Alloy Steel, High Alloy Steel, Special Alloy Steel.

The main difference between hex flange bolts and 12-point flange bolts is the number of points on the head:

12 Point Bolts | High-Performance 12-Point Fasteners in Special Alloys | RAYCHIN Manufacturer

RAYCHIN manufactures precision 12 point bolts in 25+ alloys including A286, MP35N, Waspaloy & Titanium. Compliant with NAS, MS, ASTM & DIN standards. Custom 12-point flange head bolts for aerospace, racing & high-pressure applications. Global supplier.

Precision 12 Point Bolts for High-Torque & Critical Applications

RAYCHIN is a specialized manufacturer of high-performance 12 point bolts, also known as 12-point flange bolts, 12-point socket head bolts, and double hex bolts. Engineered for applications requiring superior torque transmission, reduced head profile, and enhanced fatigue resistance, our 12-point fasteners are manufactured from an extensive range of exotic alloys. These external 12-point wrenches are designed to meet stringent aerospace (NAS, MS), automotive, and industrial (ASTM, DIN, ISO) standards for maximum reliability.

Material Grades & International Standard Specifications

Our 12-point external wrenches and 12-point flange head bolts are available in the following advanced material systems with full traceability to international specifications:

1. Precipitation-Hardening Stainless Steels:

• 17-4 PH (UNS S17400): Supplied per ASTM A564 Type 630, AMS 5643, and DIN 1.4542 in H900, H1025, and H1150 tempers for high-strength 12-point structural bolts.

• PH 13-8 Mo (UNS S13800): Manufactured to ASTM A564 Type 625, AMS 5629, offering exceptional strength-toughness combination for critical aerospace 12-point fasteners.

2. Nickel-Based Superalloys:

• Inconel® Alloys: Including Inconel 718 (UNS N07718/AMS 5663), Inconel 625 (UNS N06625/ASTM B446), and Inconel 600 (UNS N06600) for extreme temperature and oxidation resistance in turbine 12-point bolts.

• Monel® Alloys: Monel K500 (UNS N05500/AMS 4676) and Monel 400 (UNS N04400) for marine and chemical processing 12-point socket head bolts.

• Hastelloy® Alloys: Hastelloy C276 (UNS N10276/ASTM B574), C22 (UNS N06022), and B2 (UNS N10665) for severe corrosive environments.

• Waspaloy (UNS N07001/AMS 5708): High-temperature alloy for aerospace and racing 12-point fasteners.

• Nimonic® Series (e.g., Nimonic 80A/UNS N07080): Compliant with BS HR 501/502 standards for creep-resistant applications.

3. Duplex & Super Duplex Stainless Steels:

• Duplex Steel: Duplex 2205 (UNS S32205/S31803) per ASTM A193 B8S and EN 1.4462.

• Super Duplex Alloys: Alloy 926 (UNS N08926) and AL-6XN® (UNS N08367) meeting ASTM A193 B8S and NACE MR0175 for chloride-rich environments.

4. Titanium Alloys:

• Grade 5 Titanium (Ti-6Al-4V/UNS R56400): Manufactured to AMS 4928, ASTM F467, for high strength-to-weight 12-point racing bolts.

• Grade 2 Titanium (UNS R50400): For corrosion-resistant applications.

5. Refractory & Exotic Metals:

• Tantalum (UNS R05200/ASTM B365): For highly corrosive chemical applications.

• Zirconium 702 (UNS R60702/ASTM B550): Excellent in sulfuric acid service.

• Molybdenum (UNS R03600) & Tungsten: For extreme temperature applications.

6. Specialty Alloys:

• Nitronic® Alloys: Nitronic 60 (UNS S21800) and Nitronic 50 (UNS S20910) per ASTM A193 B8N for high-strength, galling-resistant 12-point bolts.

• High-Performance Stainless: 254 SMO (UNS S31254/EN 1.4547), 310SS (UNS S31000), Alloy 20 (UNS N08020), and Alloy 330 (UNS N08330).

• Cobalt Alloys: MP35N (UNS R30035/AMS 5844) and MP159 (AMS 5846) for ultra-high strength 12-point fasteners.

• Iron-Based Superalloy: A286 (UNS S66286/AMS 5731) per ASTM A453 Grade 660.

7. Aluminum Alloy:

• Aluminum 7075 (UNS A97075): Supplied to AMS QQ-A-225/9 in T6 temper for lightweight 12-point bolts.

8. Pure Nickel:

• Nickel 200 (UNS N02200/ASTM B160): For high-purity applications.

Custom 12-Point Bolt Manufacturing Capabilities

RAYCHIN provides complete custom 12-point bolt manufacturing from your technical drawings:

• Standards Compliance: NASM 25027, MS 33675, ISO 10441, DIN 2510, IFS 12-point, and customer-specific designs.

• Special Features: 12-point flange head, reduced head height, shouldered designs, thread-locking features, and special drive configurations.

• Full Processing: CNC machining, hot/cold forging, thread rolling, and certified heat treatment.

• Quality Assurance: Full MTRs (EN 10204 3.1), lot traceability, and compliance with AS9100, ISO 9001, and NADCAP requirements.

Industry Applications

• Aerospace & Defense: Engine components, flight control systems, structural assemblies (NASM/AS/EN standards)

• High-Performance Automotive: Engine systems, turbochargers, racing components

• Oil & Gas: Downhole tools, wellhead equipment, compressor assemblies

• Power Generation: Turbine generators, nuclear applications

• Industrial Machinery: High-pressure pumps, hydraulic systems, precision equipment

Why Choose RAYCHIN?

• Specialized Expertise: Deep knowledge of 12-point fastener mechanics and advanced alloy behavior

• Global Certification: Products meet international aerospace, automotive, and industrial standards

• Engineering Support: Technical assistance for material selection, design optimization, and prototyping

• Global Supply: Reliable supplier to North America, Europe, Asia, and Middle East markets

Request Custom 12-Point Bolt Quotation
Contact RAYCHIN for engineering support and competitive pricing. Submit your drawings for 12-point external wrenching bolts, 12-point socket screws, or custom 12-point fasteners.

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