[ Material Hub ]
Monel 400 Fasteners
Patriot Bolt machines Monel 400 fasteners from certified ASTM B164 bar (UNS N04400). Monel 400 is a nickel-copper alloy used for seawater, brine and hydrofluoric acid service.
This page brings together the Monel 400 fasteners we make, the property limits for bolts, studs and nuts, and how Monel 400 compares with other nickel and corrosion-resistant alloys.
[ Quick Specs ]
Monel 400 at a Glance
- Material
- Monel 400, UNS N04400, W.Nr. 2.4360
- Specifications
- ASTM B164 bar · ASTM F468 bolts and studs · ASTM F467 nuts
- Strength
- 80 ksi min tensile, 40 ksi min yield to 3/4 in (F468)
- Key elements
- 63% Ni min, 28–34% Cu
- Products
- Stud bolts, heavy hex nuts, heavy hex bolts, hex cap screws
Monel 400 Fasteners We Machine
Choose a product to see its standards and options. Every order ships with mill test reports traceable to the heat.
Monel 400 Stud BoltsFull Monel 400 page
Monel 400 Heavy Hex NutsMatching nut
Monel 400 Heavy Hex BoltsFull Monel 400 page
Monel 400 Hex Cap ScrewsMade in Monel 400Monel 400 Mechanical Properties
| Specification and size | Tensile / proof, min | Yield (0.2%), min | Hardness |
|---|---|---|---|
| ASTM F468 Ni 400, 1/4 to 3/4 in | 80 ksi tensile | 40 ksi | — |
| ASTM F468 Ni 400, 7/8 to 1-1/2 in | 70 ksi tensile | 30 ksi | — |
| ASTM F467 Ni 400 heavy hex nuts | 86 ksi proof | — | 75 HRB min |
Full chemistry is on the Monel 400 stud bolts page.
Monel 400 vs. Other Nickel and Corrosion-Resistant Alloys
| Grade | Strength, min (tensile / yield) | Typical use |
|---|---|---|
| Monel 400 (F468 Ni 400) | 80 / 40 ksi to 3/4 in | Seawater, brine and hydrofluoric acid |
| Monel K-500 (F468 Ni 500) | 130 / 90 ksi to 7/8 in | High-strength marine and oil tool hardware |
| Hastelloy C-276 (B574, annealed) | 100 / 41 ksi | Severe reducing acids, wet chlorine and sour service |
| Inconel 625 (B446 Grade 1, annealed) | 120 / 60 ksi | Seawater, subsea and acid service |
| 316 stainless (A193 B8M Class 1) | 75 / 30 ksi | General corrosion resistance; mild chemicals |
Compare all grades in the Fastener Materials Matrix.
Monel 400 Fastener FAQ
What is Monel 400 used for?
Seawater and brine service, hydrofluoric acid alkylation units and other acid and alkali service.
Which Monel 400 fasteners does Patriot Bolt make?
We machine Monel 400 stud bolts, heavy hex nuts, heavy hex bolts and hex cap screws, as well as custom parts made to your drawing.
How does Monel 400 compare with Monel K-500?
They share the same nickel-copper base. K-500 adds aluminum and titanium and is age hardened, giving roughly twice the yield strength.
Do Monel 400 fasteners come with certifications?
Yes. Patriot Bolt is ISO 9001:2015 certified, and every Monel 400 order includes mill test reports traceable to the heat and a certificate of conformance to your purchase order.
Request a Quote
Send us the product, size, specification and quantity, or upload your drawing. Call (281) 581-0176 or request a quote.