KD Fasteners is a proud manufacturer and fastener supplier of Hastelloy fasteners, nuts, and bolts for service conditions where heat and corrosion would destroy ordinary hardware. When corrosive chemicals and high heat threaten the integrity of an assembly, Hastelloy fasteners, nuts, and bolts hold up where steel and standard stainless grades fail.
Why Choose Hastelloy Fasteners, Nuts & Bolts?
Hastelloy is a family of nickel-based superalloys and a registered trademark of Haynes International, Inc. Its performance stems from its high nickel and molybdenum content, which fends off chemical attack while the metal keeps its mechanical properties at elevated temperatures.
That's why Hastelloy fasteners are specified for nuclear and chemical reactors, as well as the valves and piping that run throughout chemical plants. Each grade is tuned to a specific family of corrosives, so material selection directly affects how long a fastener lasts in service.
Common Hastelloy Applications
Because Hastelloy stands up to aggressive acids and chloride attack, it is specified in some of the most demanding processing environments, including:
- Chemical and petrochemical reactors
- Valves, pumps, and process piping
- Oil and gas and sour-gas (H2S) equipment
- Pollution control and scrubber systems
- Marine and offshore hardware
Hastelloy Grades We Carry
The grades we supply most often for fasteners are listed below, each suited to a different corrosive challenge:
- C276: The most widely used grade, a nickel-chromium-molybdenum alloy with tungsten that resists both oxidizing and reducing media, with good strength to roughly 1500°F.
- B: A nickel-molybdenum alloy with outstanding resistance to reducing environments such as hydrochloric acid.
- C-4: Offers high thermal stability and strong resistance to stress-corrosion cracking, including in welded areas.
- G: A nickel-chromium-iron-molybdenum alloy known for handling phosphoric and sulfuric acid environments.
- C-2000: A versatile grade with added copper that performs across both oxidizing and reducing conditions.
- X: Valued for high-temperature strength and oxidation resistance, common in gas turbine and aerospace components.
- C22: Higher chromium content than C276 gives it superior resistance to oxidizing media and chloride-induced pitting.
Standard, Metric, and Custom Hastelloy Options
Because Hastelloy is a specialty material, most of what we supply is made to order. KD Fasteners can produce socket head cap screws, hex head cap screws, hex nuts, machine screws, and flat washers in the grade you specify.
As a metric nuts and bolts supplier, we handle metric sizing alongside standard dimensions, so projects built to either standard are covered.
REQUEST A QUOTE
Request a Quote for Hastelloy Fasteners, Nuts, and Bolts
Send us your grade, size, and quantity, and our team will help you specify the right Hastelloy fasteners, nuts, or bolts for your application. Submit a request for a quote today, and a KD Fasteners specialist will follow up with pricing and availability.
Frequently Asked Questions About Hastelloy Fasteners, Nuts & Bolts
What temperature can Hastelloy fasteners withstand?
It depends on the grade. Hastelloy C276 keeps good mechanical properties in hot corrosive service up to roughly 1500°F (815°C). Hastelloy X is built for higher heat, with strength and oxidation resistance that suit gas turbine work at much higher temperatures. Tell us your operating range, and we will point you to a suitable grade.
Are Hastelloy nuts and bolts suitable for sour gas service?
Yes. Grades such as C276 and C22 resist sulfide stress cracking and hydrogen-induced cracking, and they are commonly specified for H2S (sour gas) environments where standard alloy steels and stainless grades can fail. Let us know if your project requires NACE MR0175 compliance.
Can Hastelloy fasteners be welded and machined?
Yes, though Hastelloy work-hardens quickly, machining requires slower speeds and rigid tooling. The C-series grades weld well, and C-4 in particular keeps its corrosion resistance in the heat-affected zone. Our shop is set up to fabricate these alloys to your specification.