Nickel Alloys Bolts
Bolts include stud bolts, hex bolts, heavy hex bolts, threaded rod and U-bolts, used to join flanges, structures and equipment. Bolting grade must suit the joint's pressure, temperature and corrosion environment.
Choose a grade below for specifications, composition, sizes and weight charts.
Nickel Alloys bolts by grade
| Grade | Specification | Key characteristic | Typical use |
|---|---|---|---|
| Inconel 600 Bolts | ASTM B166 bar stock | ≥ 72% nickel: immune to chloride SCC | Furnace muffles, retorts and trays |
| Inconel 625 Bolts | ASTM B446 bar stock | High strength without age hardening | Seawater piping and offshore systems |
| Inconel 718 Bolts | ASTM B637 / AMS 5662 | Age-hardenable: yield strength above 1,000 MPa | Aero-engine discs, shafts and casings |
| Incoloy 800 Bolts | ASTM B408 bar stock | Fe-Ni-Cr: bridges stainless and nickel alloys | Heat-exchanger and steam-generator tubing |
| Incoloy 825 Bolts | ASTM B425 bar stock | Resistant to sulphuric and phosphoric acids | Sour oil and gas piping and tubulars |
| Monel 400 Bolts | ASTM B164 | Ni-Cu alloy: excellent in seawater and brackish water | HF alkylation units in refineries |
| Monel K-500 Bolts | ASTM B865 bar stock | Age-hardenable Ni-Cu alloy | Marine pump and propeller shafts |
| Hastelloy C22 Bolts | ASTM B574 bar stock | Resists both oxidising and reducing media | Pharmaceutical and fine-chemical reactors |
| Hastelloy C276 Bolts | ASTM B574 bar stock | About 16% Mo, 15.5% Cr, 3.7% W | Chemical reactors and heat exchangers |
How nickel alloys bolts are made, sized and tested
How it's madeCut from heat-treated bar (or forged and heat treated), then threaded by rolling or cutting, and coated if required.
- Size range
- M6 – M100 and ¼" – 4" (larger on request); lengths to flange tables or drawing
- Finish
- Plain, black oxide, zinc, hot-dip galvanised, PTFE-based fluoropolymer, zinc-nickel
- Ends
- Chamfered points; full or partial thread
Testing & documents
- Chemical and mechanical tests of bar and finished bolts
- Hardness tests
- Proof-load and wedge tests where applicable
- Coating thickness and adhesion
- EN 10204 3.1 certificate; 3.2 with third-party inspection
Frequently asked questions
What is a stud bolt?
A threaded rod without a head, fitted with a nut on each end. It's the standard bolting for pipeline flanges.
Which nickel alloys grades are available as bolts?
Inconel 600, Inconel 625, Inconel 718, Incoloy 800, Incoloy 825, Monel 400, Monel K-500, Hastelloy C22, Hastelloy C276.
Which specifications cover nickel alloys bolts?
ASTM B166, ASTM B446, ASTM B637, ASTM B408, ASTM B425, ASTM B164, ASTM B865, ASTM B574, depending on grade.
Need nickel alloys bolts?
Send grade, size, quantity and destination.