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Nimonic Fasteners Catalog: Hex Bolts, Studs, Nuts, Washers & Aerospace 12‑Point Components
In the extreme world of gas turbines, aerospace propulsion, and high‑temperature industrial processing, Nimonic fasteners are indispensable. RAYCHIN LIMITED, as a specialist global manufacturer with deep expertise in nickel‑alloy bolting, provides a comprehensive range of Nimonic 80A hex bolts, Nimonic 90 stud bolts, Nimonic socket head cap screws, threaded rod, heavy hex nuts, washers, and 12‑point aerospace bolts—all engineered to maintain integrity at temperatures where other materials fail. This catalog details our product forms, dimensional capabilities, and quality standards, helping you source the exact Nimonic fastener your design demands.
1. Nimonic Fastener Product Range
? Nimonic 80A Hex Bolts
Nimonic 80A hex bolts are manufactured to ASME B18.2.1, DIN 931/933, and ISO 4014. They combine high tensile strength (up to 1000 MPa) with excellent oxidation resistance to 815°C. Commonly used in exhaust valve assemblies, nuclear reactor internals, and gas turbine casing flanges. Available in diameters from 1/4″ to 2″ and M6 to M48.
? Nimonic 90 Stud Bolts
Nimonic 90 stud bolts provide the superior creep‑rupture strength needed for turbine disc attachments and afterburner components up to 870°C. Manufactured as double‑end studs (ASME B16.5) or fully threaded studs (DIN 976). Diameters range from 1/4″ to 2‑1/2″ (imperial) and M6 to M64 (metric). Rolled threads after heat treatment ensure maximum fatigue life.
? Nimonic Socket Head Cap Screws
Nimonic socket head cap screws per ASME B18.3 provide a compact, high‑strength solution for confined high‑temperature zones. Ideal for sensor mounts, linkage pins, and actuator attachments in engines. Sizes from #4 to 1″ and M3 to M24, with optional silver or MoS₂ anti‑seize coatings for galling‑free assembly.
? Nimonic Threaded Rod
Nimonic threaded rod (continuous‑thread studding) is cut to your specified length with chamfered ends, per ASME B18.31.2 or DIN 976. Available in all Nimonic grades, diameters from 1/4″ to 2‑1/2″ and M6 to M64. Full lot certification and PMI testing included.
? Nimonic Heavy Hex Nuts
Nimonic heavy hex nuts per ASME B18.2.2 and DIN 934 are proof‑load matched to the corresponding stud or bolt. For high‑temperature locking, we also supply all‑metal prevailing‑torque lock nuts. Nuts can be supplied in the same Nimonic grade or a compatible alloy to reduce galling risk during assembly.
⬜ Nimonic Washers
Nimonic washers—flat (ASME B18.22.1, DIN 125) and spring lock (DIN 127)—are produced to match bolt diameters from 1/4″ to 2″ and M6 to M48. Custom outside diameters and thicknesses are available. They maintain clamp load distribution and protect flange surfaces at extreme temperatures.
2. Nimonic Fasteners Dimensions and Metric Capability
RAYCHIN maintains comprehensive tooling for both imperial and metric Nimonic fasteners dimensions. The table below summarizes our standard size ranges across the most common product types.
Nimonic bolts metric capability is fully integrated into our production. We stock Nimonic bar in metric diameters and can produce metric threads to ISO 261/965 standards. Simply specify the standard and dimensions on your RFQ, and our engineering team will ensure compliance.
3. Nimonic 12‑Point Bolts for Aerospace
For gas turbine engines and aerospace propulsion systems, Nimonic 12‑point bolts aerospace are the standard for high‑torque, compact‑flange connections. RAYCHIN manufactures these to ASME B18.2.5 and customer‑specific head profiles, using Nimonic 80A or 90 per AMS specifications. Key features include:
- Vacuum solution annealing and aging in NADCAP‑accredited furnaces
- 100% fluorescent penetrant inspection (FPI) for surface integrity
- Full AS9102 First Article Inspection Report (FAIR) available
- Tight tolerance control on head‑to‑shank concentricity and wrenching dimensions
These fasteners are used in compressor disc attachments, combustion chamber external hardware, and turbine frame assemblies—anywhere a small wrenching envelope and high preload are essential at extreme temperatures.
4. Quality Assurance and Documentation
Every Nimonic fastener shipment from RAYCHIN includes a complete quality dossier:
- Material certification to AMS 5766 (Nimonic 80A), AMS 5829 (Nimonic 90), or equivalent standards
- EN 10204 Type 3.1 certificate (Type 3.2 with independent third‑party witness on request)
- Positive Material Identification (PMI) report by OES
- Mechanical test report: tensile, yield, elongation, reduction of area, and hardness
- Heat treatment batch records with full furnace charts
- Optional anti‑galling coatings: MoS₂, silver, or boron nitride pre‑applied
Send your part numbers, drawings, or specifications to our technical sales team. We'll provide a detailed compliance assessment and competitive quotation within 24 hours.
✉️ sales@ray-chin.com? www.ray-chin.com | Nimonic 80A · Nimonic 90 · Hex Bolts · Studs · 12‑Point Aerospace
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