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.

Hex Nuts | High-Performance & Special Alloy Hex Nuts Manufacturer | RAYCHIN

RAYCHIN manufactures precision hex nuts in 25+ exotic alloys including 17-4 PH, Inconel 718, Alloy 926 & MP35N. Heavy hex nuts, jam nuts & self-locking nuts compliant with ASME, DIN, ISO, ASTM standards. Global supplier for aerospace, chemical & marine industries.

High-Performance Hex Nuts for Critical Fastening Applications

RAYCHIN is a premier manufacturer of precision-engineered hex nuts (also called hexagon nuts) — fundamental fastening components essential for securing bolts, screws, and studs in demanding environments. Our hex nuts are manufactured from over 25 specialized alloys to withstand extreme conditions involving high temperatures, corrosive media, high pressures, and vibration. We supply these critical components to aerospace, oil & gas, chemical processing, power generation, and marine industries globally, ensuring reliability in the most challenging applications.

Hex Nut Types & Classifications

We manufacture a comprehensive range of hex nut configurations to meet diverse technical and industrial requirements:

1. Standard Hex Nuts:

• Heavy Hex Nuts: Thicker and wider than standard nuts for greater load distribution, manufactured to ASME B18.2.2, DIN 934 (Heavy), ISO 4032, and JIS B1181 standards.

• Regular Hex Nuts (Finished Hex Nuts): Standard proportion nuts compliant with ASME B18.2.2, DIN 934, ISO 4032.

• Jam Nuts (Thin Hex Nuts): Reduced height nuts for locking applications or tight spaces per ASME B18.2.2, DIN 439, ISO 4035.

2. Special Application Hex Nuts:

• Self-Locking Hex Nuts: Feature integrated locking elements (nylon inserts, metal locking collars, deformed threads) to prevent loosening under vibration. Compliant with ASME B18.16, DIN 985, ISO 7040, NASM 25027.

• Flange Hex Nuts: Integrate a built-in washer flange for increased bearing surface and vibration resistance (DIN 1665, ISO 4161).

• Weld Nuts & Square Weld Nuts: Designed for permanent attachment to structures via welding.

• Coupling Nuts: Extended length nuts for joining two threaded rods or studs.

• Custom Hex Nuts: Manufactured to exact OEM specifications with unique dimensions, thread profiles, locking features, and special geometries.

Material Grades & International Standard Specifications

Our hex nuts are precision-machined and forged from the following advanced material systems with full international standard compliance:

1. Precipitation-Hardening Stainless Steels:

• 17-4 PH (UNS S17400) Hex Nuts: Supplied to ASTM A564 Type 630, AMS 5643, DIN 1.4542 in H900, H1025, H1150 tempers. *Keywords: 17-4 PH hex nuts, 17-4 PH heavy hex nuts.*

• PH 13-8 Mo (UNS S13800) Hex Nuts: Manufactured per ASTM A564 Type 625, AMS 5629. *Keywords: PH 13-8 Mo nuts, PH 13-8 Mo jam nuts.*

2. Nickel-Based Superalloys:

• Inconel® Hex Nuts: Inconel 718 (UNS N07718/AMS 5663), Inconel 625 (UNS N06625/ASTM B446). Keywords: Inconel 718 hex nuts, Inconel 625 heavy hex nuts.

• Monel® Hex Nuts: Monel K500 (UNS N05500/AMS 4676), Monel 400 (UNS N04400). Keywords: Monel K500 hex nuts, Monel 400 nuts.

• Hastelloy® Hex Nuts: Hastelloy C276 (UNS N10276/ASTM B574), C22 (UNS N06022). Keywords: Hastelloy C276 hex nuts, Hastelloy C22 nuts.

• Waspaloy Hex Nuts (UNS N07001): Per AMS 5708, AMS 5824. Keywords: Waspaloy hex nuts.

• Nimonic® Series Hex Nuts: Nimonic 80A (UNS N07080), Nimonic 90 (UNS N07090) compliant with BS HR 501/502. Keywords: Nimonic 80A nuts, Nimonic 90 hex nuts.

3. Duplex & Super Duplex Stainless Steels:

• Duplex Steel Hex Nuts: Duplex 2205 (UNS S32205) to ASTM A193 B8S, EN 1.4462. Keywords: Duplex 2205 hex nuts, Duplex steel heavy hex nuts.

• Super Duplex Alloy Hex Nuts: Alloy 926 (UNS N08926), AL-6XN® (UNS N08367) meeting ASTM A193 B8S, NACE MR0175. *Keywords: Alloy 926 hex nuts, AL-6XN hex nuts.*

4. Titanium Alloy Hex Nuts:

• Grade 5 Titanium Hex Nuts (Ti-6Al-4V): UNS R56400 per AMS 4928, ASTM F467. *Keywords: Titanium Grade 5 hex nuts, Ti-6Al-4V nuts.*

• Grade 2 Titanium Hex Nuts: UNS R50400 to ASTM B348. Keywords: Titanium Grade 2 hex nuts.

5. Refractory & Exotic Metal Hex Nuts:

• Tantalum Hex Nuts (UNS R05200): ASTM B365, AMS 7845. Keywords: Tantalum hex nuts.

• Zirconium 702 Hex Nuts (UNS R60702): ASTM B550, ASME SB550. Keywords: Zirconium hex nuts.

• Molybdenum (UNS R03600) & Tungsten Hex Nuts. Keywords: Molybdenum hex nuts, Tungsten nuts.

6. Specialty Alloy Hex Nuts:

• Nitronic® Alloy Hex Nuts: Nitronic 60 (UNS S21800), Nitronic 50 (UNS S20910) to ASTM A193 B8N. Keywords: Nitronic 60 hex nuts, Nitronic 50 nuts.

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

• Cobalt Alloy Hex Nuts: MP35N (UNS R30035/AMS 5844), MP159 (AMS 5846). Keywords: MP35N hex nuts, MP159 nuts.

• Iron-Based Superalloy Hex Nuts: A286 (UNS S66286) to AMS 5731, ASTM A453 Grade 660. Keywords: A286 hex nuts.

7. Aluminum Alloy Hex Nuts:

• Aluminum 7075 Hex Nuts (UNS A97075): AMS QQ-A-225/9, ASTM F467 in T6, T73 tempers. *Keywords: Aluminum 7075 hex nuts, 7075-T6 nuts.*

8. Pure Nickel & Incoloy Hex Nuts:

• Nickel 200 Hex Nuts (UNS N02200): ASTM B160, ASME SB160. Keywords: Nickel 200 hex nuts.

• Incoloy® Hex Nuts: Incoloy 825 (UNS N08825), Incoloy 925 (UNS N09925). Keywords: Incoloy 825 hex nuts.

Custom Hex Nut Manufacturing Services

RAYCHIN provides complete custom hex nut manufacturing from your technical specifications:

• Standards Compliance: ASME B18.2.2, DIN 934/935/936, ISO 4032/4034/4035, ASTM A194/A563, NASM 25027, and customer drawings.

• Threading & Tapping: Class 2B, 3B, 6H tolerance threads, unified (UNC/UNF), metric (ISO), Whitworth, special thread forms.

• Special Features: Self-locking inserts, captive washers, flanges, special drive systems, heat-treated conditions.

• Surface Finishes: Passivation, electropolishing, hot-dip galvanizing, XYLAN coating, PTFE coating.

• Full Processing: CNC machining, hot/cold forging, tapping, heat treatment, surface finishing, 100% thread gauging.

• Quality Assurance: Complete MTRs (EN 10204 3.1), dimensional inspection, hardness testing, coating thickness verification, compliance with AS9100, ISO 9001, PED, NACE MR0175.

Industry Applications

• Aerospace & Defense: Engine assemblies, airframe structures, critical flight systems (NAS, MS, AS standards)

• Oil & Gas: Wellhead equipment, pipeline flanges, refinery pressure vessels (ASTM A194 Gr. 2H/2HM)

• Chemical & Pharmaceutical: Reactor closures, pump housings, high-purity piping systems

• Power Generation: Turbine casings, boiler supports, nuclear component assembly

• Marine & Offshore: Hull fittings, deck hardware, subsea equipment (DNV, ABS certified)

Why Choose RAYCHIN?

• Material Mastery: Unmatched expertise in machining and forging exotic alloy hex nuts.

• Full Traceability: Complete material certification from melt to finished nut.

• Thread Expertise: Precision threading to international standards and custom specifications.

• Global Certifications: Products meet ASTM, ASME, DIN, ISO, JIS, BS standards.

• Engineering Support: Material selection guidance and design-for-manufacturability analysis.

• Global Supply: Trusted supplier to North America, European Union, Asia-Pacific, and Middle East markets.

Request Hex Nut Quotation
Contact RAYCHIN for technical consultation and competitive pricing. Submit your specifications for Inconel 718 heavy hex nuts, self-locking Titanium hex nuts, or custom alloy hexagon nuts.

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