Monel 400 Fasteners are competing nickel-copper alloy parts that have been produced using UNS N04400 (Werkstoff No. 2.4360), which offer a high degree of mechanical strength and superior corrosion resistance to seawater, chloride environments and a large number of corrosive media. This alloy is a solid solution alloy and cannot be hardened by conventional heat treatment, the mechanical properties required are achieved by suitable cold working. Monel 400 fasteners can be used in demanding marine and process equipment with useful mechanical properties from sub-zero temperatures up to around 480°C. Bolts, nuts, studs, screws and washers produced to suitable ASTM specifications are available. Jade Alloys is a manufacturer and supplier of Monel 400 Fasteners in India supplying precision-machined products with material traceability and EN 10204 3.1 inspection document for industrial applications.
Specifications of Monel 400 Fasteners
| Attribute | Technical Specification |
|---|---|
| Material Specification | Monel 400 / UNS N04400 / Werkstoff Nr. 2.4360 |
| Governing Fastener Standards | ASTM F467 / ASME SF467 (Nuts), ASTM F468 / ASME SF468 (Bolts/Studs) |
| Raw Material Standard | ASTM B164 / ASME SB164 (Rod & Bar) |
| Imperial Size Range | #10 (0.190″) to 2″ (Custom sizes up to 4″ OD available upon request) |
| Metric Size Range | M3 to M56 (Custom threads up to M100 available) |
| Thread Standards | Metric Coarse (Pitch), UNC, UNF, UNEF, BSW, BSF, NPT |
| Thread Pitch/Fit Class | Class 2A / 2B (Imperial), Class 6g / 6H (Metric) |
| Head & Nut Configurations | Hex Head, Heavy Hex, Socket Head, Square, Countersunk, Flange |
| Manufacturing Process | Cold Headed / Cold Formed, Hot Forged, Precision CNC Machined |
| Surface Finish | Bright Annealed, Passivated, Plain Machined, PTFE/Xylan Coated |
| Testing & Quality Assurance | EN 10204 3.1 Material Test Certificate, PMI Testing, Microstructure Analysis |
Chemical Compositions of Monel 400 Fasteners
| Element | Ni | Cu | Fe (max) | Mn (max) | Si (max) | C (max) | S (max) |
|---|---|---|---|---|---|---|---|
| Content (%) | 63.00 min | 28 – 34 | 2.5 | 2.0 | 0.5 | 0.3 | 0.024 |
Monel 400 Fasteners Mechanical Properties
| Mechanical / Physical Property | Tensile Strength (Annealed) | Yield Strength (0.2% Offset) | Elongation (in 2 in. / 50 mm) | Modulus of Elasticity | Poisson’s Ratio |
|---|---|---|---|---|---|
| Monel 400 Value | 70 – 85 ksi (485 – 585 MPa) | 25 – 50 ksi (170 – 345 MPa) | 35% min | 26,000 ksi (179 GPa) | 0.32 |
Equivalent Grades of Monel 400 Fasteners
| Standard | UNS | Werkstoff Nr. | BS | AFNOR | JIS | GOST | EN |
|---|---|---|---|---|---|---|---|
| Monel 400 | N04400 | 2.4360 | NA 13 | NU-30M | NW 4400 | МНЖМц 28-2,5-1,5 | NiCu30Fe |
Types of Monel 400 Fasteners
AISI Monel 400 U Bolts
ASME SB 564 Monel 400 High Performance Anchor Bolts
ASTM B564 Grade 400 Threaded Expansion Anchor Bolt
ASTM B564 Monel 400 Hex Bolts
ASTM B564 UNS N04400 Eye Bolts
DIN 2.4360 Bolts
DIN 2.4360 Carriage Bolts
DIN 2.4360 Flange Head Bolts
DIN 2.4360 Torx Bolts
Monel 400 Countersunk Bolts
Monel 400 Forged Hook Bolts
Monel 400 J Bolts
Monel 400 Stud Bolts
N04400 UNS 12-Point Flange Bolts
UNS N04400 Allen Bolts
UNS N04400 Elevator Bolt
400 Monel 12-Point Nuts
400 Monel Lock Nuts
400 Monel Sleeve Nuts
AISI 400 Square Nuts
ASME SB 564 Monel 400 Acorn Nuts
ASME SB564 Monel 400 T Nuts
ASTM B564 Grade 400 Lug Nut
ASTM B564 Monel 400 Hex Nuts
ASTM B564 UNS N04400 Castle Nuts
DIN 2.4360 Captive Nuts
Monel 400 Dome Nuts
Monel 400 Metric Nuts
Monel 400 Nyloc Nuts
ASME SB564 Monel 400 Countersunk Screws
ASTM B564 Grade 400
ASTM B564 Monel 400 Torx Screws
DIN 2.4360 Grub Screws
Monel 400 Self Drilling Screws
Monel 400 Self Tapping
400 Monel Lock Washer
ASME SB564 Monel 400 Tab Washer
ASTM B564 Grade 400 Flat Washer
ASTM B564 Monel 400 Plain Washer
DIN 2.4360 Split Washer
Monel 400 Spring Washer
Monel 400 Star Washer
Dimensions Chart of Monel 400 Fasteners
| Nominal Size | Diameter, D (in) | UNC TPI | UNC Umax (in) | UNF TPI | UNF Umax (in) | 8UN TPI | 8UN Umax (in) |
|---|---|---|---|---|---|---|---|
| 1/4″ | 0.2500 | 20 | 0.071 | 28 | 0.100 | — | — |
| 5/16″ | 0.3125 | 18 | 0.083 | 24 | 0.111 | — | — |
| 3/8″ | 0.3750 | 16 | 0.083 | 24 | 0.125 | — | — |
| 7/16″ | 0.4375 | 14 | 0.100 | 20 | 0.143 | — | — |
| 1/2″ | 0.5000 | 13 | 0.100 | 20 | 0.154 | — | — |
| 9/16″ | 0.5625 | 12 | 0.111 | 18 | 0.167 | — | — |
| 5/8″ | 0.6250 | 11 | 0.111 | 18 | 0.182 | — | — |
| 3/4″ | 0.7500 | 10 | 0.125 | 16 | 0.200 | — | — |
| 7/8″ | 0.8750 | 9 | 0.143 | 14 | 0.222 | — | — |
| 1″ | 1.0000 | 8 | 0.167 | 12 | 0.250 | — | — |
| 1-1/8″ | 1.1250 | 7 | 0.167 | 12 | 0.286 | 8 | 0.250 |
| 1-1/4″ | 1.2500 | 7 | 0.167 | 12 | 0.286 | 8 | 0.250 |
| 1-3/8″ | 1.3750 | 6 | 0.167 | 12 | 0.333 | 8 | 0.250 |
| 1-1/2″ | 1.5000 | 6 | 0.167 | 12 | 0.333 | 8 | 0.250 |
| 1-5/8″ | 1.6250 | — | — | — | — | 8 | 0.250 |
| 1-3/4″ | 1.7500 | 5 | 0.175 | — | 0.400 | 8 | 0.250 |
| 1-7/8″ | 1.8750 | — | — | — | — | 8 | 0.250 |
Monel 400 Stud Bolts Dimensions Chart
| Nominal Size | Body Diameter, D (Nom.) | Body Diameter, D (Min.) | Body Diameter, D (Max.) | Tap End Thread Length, BM | Umax UNC & NC-5 | Umax UNF | Umax 8UN | Nut End Thread Length, Bmin (L≤10″) | Nut End Thread Length, Bmin (10″<L≤16″) | Nut End Thread Length, Bmin (L>16″) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/4″ | 0.375 | 0.350 | 0.400 | 0.250 | 0.100 | 0.071 | — | 0.750 | 1.000 | 1.500 |
| 5/16″ | 0.469 | 0.440 | 0.498 | 0.312 | 0.111 | 0.083 | — | 0.875 | 1.125 | 1.625 |
| 3/8″ | 0.563 | 0.532 | 0.594 | 0.375 | 0.125 | 0.083 | — | 1.000 | 1.250 | 1.750 |
| 7/16″ | 0.656 | 0.620 | 0.692 | 0.438 | 0.143 | 0.100 | — | 1.125 | 1.375 | 1.875 |
| 1/2″ | 0.750 | 0.708 | 0.792 | 0.500 | 0.154 | 0.100 | — | 1.250 | 1.500 | 2.000 |
| 9/16″ | 0.844 | 0.802 | 0.896 | 0.562 | 0.167 | 0.111 | — | 1.375 | 1.625 | 2.125 |
| 5/8″ | 0.938 | 0.892 | 0.983 | 0.625 | 0.182 | 0.111 | — | 1.500 | 1.750 | 2.250 |
| 3/4″ | 1.125 | 1.075 | 1.175 | 0.750 | 0.200 | 0.125 | — | 1.750 | 2.000 | 2.500 |
| 7/8″ | 1.313 | 1.258 | 1.368 | 0.875 | 0.222 | 0.143 | — | 2.000 | 2.250 | 2.750 |
| 1″ | 1.500 | 1.438 | 1.562 | 1.000 | 0.250 | 0.167 | — | 2.250 | 2.500 | 3.000 |
| 1-1/8″ | 1.688 | 1.625 | 1.750 | 1.125 | 0.286 | 0.167 | 0.250 | 2.500 | 2.750 | 3.250 |
| 1-1/4″ | 1.875 | 1.813 | 1.938 | 1.250 | 0.286 | 0.167 | 0.250 | 2.750 | 3.000 | 3.500 |
| 1-3/8″ | 2.063 | 2.000 | 2.125 | 1.375 | 0.333 | 0.167 | 0.250 | 3.000 | 3.250 | 3.750 |
| 1-1/2″ | 2.250 | 2.188 | 2.313 | 1.500 | 0.333 | 0.167 | 0.250 | 3.250 | 3.500 | 4.000 |
| 1-5/8″ | 2.438 | 2.375 | 2.500 | 1.625 | — | — | 0.250 | 3.500 | 3.750 | 4.250 |
| 1-3/4″ | 2.625 | 2.563 | 2.688 | 1.750 | 0.400 | — | 0.250 | 3.750 | 4.000 | 4.500 |
| 1-7/8″ | 2.813 | 2.750 | 2.875 | 1.875 | — | — | 0.250 | 4.000 | 4.250 | 4.750 |
| 2″ | 3.000 | 2.925 | 3.075 | 2.000 | 0.444 | — | 0.250 | 4.250 | 4.500 | 5.000 |
| 2-1/4″ | 3.375 | 3.300 | 3.450 | 2.250 | 0.444 | — | 0.250 | 4.750 | 5.000 | 5.500 |
| 2-1/2″ | 3.750 | 3.675 | 3.825 | 2.500 | 0.500 | — | 0.250 | 5.250 | 5.500 | 6.000 |
| 2-3/4″ | 4.125 | 4.050 | 4.200 | 2.750 | 0.500 | — | 0.250 | 5.750 | 6.000 | 6.500 |
| 3″ | 4.500 | 4.425 | 4.575 | 3.000 | 0.500 | — | 0.250 | — | 6.500 | 7.000 |
| 3-1/4″ | 4.875 | 4.775 | 4.975 | 3.250 | 0.500 | — | 0.250 | — | 7.000 | 7.500 |
| 3-1/2″ | 5.250 | 5.150 | 5.350 | 3.500 | 0.500 | — | 0.250 | — | 7.500 | 8.000 |
| 3-3/4″ | 5.625 | 5.525 | 5.725 | 3.750 | 0.500 | — | 0.250 | — | 8.000 | 8.500 |
| 4″ | 6.000 | 5.900 | 6.100 | 4.000 | 0.500 | — | 0.250 | — | 8.500 | 9.000 |
Applications and Industrial Uses of Monel 400 Fasteners
- Marine & Offshore Industry
- Chemical Processing Industry
- Oil & Gas Industry
- Petrochemical Industry
- Power Generation Industry
- Desalination & Water Treatment Industry
- Pharmaceutical Industry
- Food Processing Industry
Frequently Asked Questions
1. What are Monel 400 Fasteners?
Monel 400 Fasteners are nickel-copper alloy fasteners made from UNS N04400, offering high strength and excellent corrosion resistance.
2. What is Monel 400 made of?
Monel 400 is primarily composed of nickel and copper, with small amounts of iron, manganese, carbon, and silicon.
3. Are Monel 400 Fasteners corrosion resistant?
Yes. They offer excellent resistance to seawater, chloride environments, and many acids and alkalis.
4. What is the difference between Monel 400 and Monel K500 Fasteners?
Monel 400 is a solid-solution alloy, while Monel K500 contains aluminum and titanium and can be age-hardened for higher strength.
5. Are Monel 400 Fasteners suitable for marine applications?
Yes. They are widely used in marine environments because of their strong resistance to seawater and chloride corrosion.
6. Can Monel 400 Fasteners be used in hydrofluoric acid service?
Yes. Monel 400 has excellent resistance to hydrofluoric acid, particularly in reducing and anhydrous conditions.
