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Monel 400 Bolts

Manufacturer, Exporter & Supplier of Monel 400 Bolts

Monel 400 Bolts Manufacturer & Supplier for Marine and Chemical Applications

Monel 400 Bolts are high-performance fasteners manufactured from a nickel-copper alloy (UNS N04400) designed for extreme resistance to seawater, hydrofluoric acid, alkalis, and reducing environments. These bolts are widely used in marine engineering, chemical processing plants, and offshore oil & gas systems where conventional stainless steel grades fail due to chloride-induced corrosion.

Monel 400 Bolts Manufacturer

Engineered to comply with standards such as ASTM B164 and applicable DIN/ISO dimensional norms, Monel 400 fasteners deliver stable mechanical strength across a wide temperature range from sub-zero conditions up to approximately 480°C. Their non-magnetic nature and exceptional resistance to stress corrosion cracking make them a preferred choice in critical industrial assemblies.

KK Fasteners supplies Monel 400 Bolts to global OEMs and EPC contractors, ensuring full material traceability and dimensional compliance for every batch shipped across international markets including the USA, UAE, Europe, and Southeast Asia.

Technical Specification List Of Monel 400 Bolts

Parameter Specification
Material Monel 400 (Nickel-Copper Alloy UNS N04400)
Grade ASTM B164 / ASME SB164
Size Range M6 to M100 / 1/4” to 4”
Thread Type Metric (ISO), UNC, UNF
Standards DIN, ISO, ASTM, BS, JIS
Tensile Strength 480 – 620 MPa
Hardness 70 – 90 HRB
Temperature Range -200°C to 480°C
Surface Finish Bright, Passivated, Black Oxide
Types Hex Bolt, Heavy Hex Bolt, Stud Bolt, U-Bolt

Chemical Composition Of Monel 400 Bolts

Monel 400 Ni C Al Mn Si Fe Cu S Co Cr
63.0 min 0.3 max 0.50 max 2.0 max 0.5 max 1.0 – 2.5 28.0 – 34.0 0.02 max – –

Mechanical Properties Of Monel 400 Bolts

Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
8.8 g/cm3 1350 °C (2460 °F) Psi – 35,000 , MPa – 240 Psi – 80,000 , MPa – 550 40 %

Equivalent Grades of Monel 400 Bolts

STANDARD UNS WERKSTOFF NR. AFNOR EN JIS BS GOST
Monel 400 N04400 2.4360 NU-30M NiCu30Fe NW 4400 NA 13 МНЖМц 28-2,5-1,5

Monel 400 Hex Bolts Dimensions

Hex Bolt Dimension

All measurements in millimeters

NOMINAL SIZE (D)
BODY DIAMETER
BOLT HEAD THICKNESS
ACROSS THE FLATS
ACROSS CORNERS
D (MAX)
D (MIN)
H (MAX)
H (MIN)
F (MAX)
F (MIN)
C (MAX)
C (MIN)
m10
10.00
9.78
6.63
6.17
17.00
15.73
18.48
17.77
m12
12.00
11.73
7.76
4.24
19.00
17.73
20.78
20.03
m14
14.00
13.73
9.09
8.51
22.00
20.67
24.25
23.35
m16
16.00
15.73
10.32
9.68
24.00
23.67
27.71
26.75
m20
20.00
19.67
12.88
12.12
30.00
29.16
34.64
32.95
m24
24.00
23.67
15.44
14.56
36.00
35.00
41.57
39.55
m30
30.00
29.67
19.48
17.92
46.00
45.00
53.12
50.85
m36
36.00
35.61
23.38
21.63
55.00
53.80
63.51
60.79
m42
42.00
41.38
26.97
25.03
65.00
62.90
75.06
71.71
m48
48.00
47.38
31.07
28.93
75.00
72.60
86.60
82.76
m56
56.00
55.26
36.2
33.80
85.00
82.20
98.15
93.71
m64
64.00
63.26
41.32
38.68
95.00
91.80
109.70
104.65
m72
72.00
71.26
46.45
43.55
105.00
101.40
121.24
115.60
m80
80.00
79.26
51.58
48.42
115.00
111.00
132.72
126.54
m90
90.00
89.13
57.74
54.26
130.00
125.50
150.11
143.07
m100
90.00
99.13
63.9
60.10
145.00
140.00
167.43
159.60

Monel 400 Bolts Weight Chart

MM THREADS AS PER IS 1363/67

Fasteners APPROXIMATE WEIGHT IN KGS FOR 100 NOS

Monel 400 LENGTH

D      I      A      M      E      T      E      R

M 5

M 6

M 8

M 10

M 12

M 14

M 16

M 18

M 20

M 22
16 mm 0.448 0.743 1.590 3.211
20 mm 0.598 0.812 1.711 3.411 4.892
25 mm 0.660 0.897 1.871 3.660 5.252 8.170
30 mm 0.737 1.010 2.070 3.912 5.574 9.690 10.707 18.657
35 mm 0.804 1.120 2.271 4.223 5.974 10.000 11.416 16.026 19.608
40 mm 0.881 1.230 2.470 4.533 6.410 10.288 12.107 16.667 20.747
45 mm 0.958 1.340 2.671 4.840 6.859 10.504 12.821 17.241 21.739
50 mm 1.030 1.450 2.870 5.155 7.299 11.261 13.624 17.857 22.727 28.409
55 mm 1.560 3.071 5.464 7.740 11.628 14.409 18.868 23.810 30.120
60 mm 1.670 3.270 5.774 8.183 12.255 15.244 20.000 25.126 32.051
65 mm 1.781 3.472 6.083 8.621 12.626 16.026 21.008 26.455 34.014
70 mm 1.890 3.671 6.394 9.058 12.987 16.835 22.124 27.778 35.461
75 mm 2.000 3.873 6.702 9.506 13.228 17.606 23.256 29.070 39.063
80 mm 2.111 4.072 7.013 10.000 13.889 18.248 24.510 30.303 40.000
90 mm 4.472 7.634 10.917 14.925 19.841 26.042 33.113 41.667
100 mm 4.873 8.251 11.820 16.340 21.459 27.778 35.714 46.296
110 mm 8.881 12.723 17.730 23.041 31.250 38.168 47.170
120 mm 9.506 13.624 18.797 24.631 32.895 40.984 50.000
130 mm 10.101 14.535 20.000 26.316 34.722 43.478 52.632
140 mm 10.707 15.432 20.833 27.933 35.461 46.296 55.556
150 mm 11.312 16.340 22.222 29.412 37.594 48.544 58.824
160 mm 11.905 17.241 24.272 31.056 40.984 50.505 61.728
170 mm 12.500 18.116 32.680 53.191 64.935
180 mm 13.123 19.011 26.882 34.247 55.556 67.568
190 mm 13.736 19.920 35.971 58.140 70.423
200 mm 14.327 20.833 29.586 37.594 49.020 60.976 73.529
220 mm 15.528 22.624 40.650 65.789 79.365
240 mm 16.722 24.510 43.860 71.429 84.746
250 mm 17.301 25.381 45.455 74.627 87.719
260 mm 17.921 26.316 47.170 76.923 90.909
280 mm 19.157 28.090 50.505 81.967 98.039
300 mm 20.325 29.940 53.763 87.719 104.167
320 mm 31.646 56.818 92.593
340 mm 33.557 60.241 98.039
360 mm 35.211 63.291 104.167
380 mm 37.037 66.667 108.696
400 mm 39.063 69.444 113.636

Monel 400 Stud Bolt Size Chart

Class 150 Flanges ASME B16.5 (Stud bolt sizes) Length of Stud Bolts
NPS Outside Diameter of Flange The diameter of Bolt Circle The diameter of Bolt Holes Number of Bolts Diameter of Bolts Raised Face
0.06 in		 Ring Joint
1/2 3 1/2 2 3/8 5/8 4 1/2 2 1/4 –
3/4 3 7/8 2 3/4 5/8 4 1/2 2 1/2 –
1 4 1/4 3 1/8 5/8 4 1/2 2 1/2 3
1 1/4 4 5/8 3 1/2 5/8 4 1/2 2 3/4 3 1/4
1 1/2 5 3 7/8 5/8 4 1/2 2 3/4 3 1/4
2 6 4 3/4 3/4 4 5/8 3 1/4 3 3/4
2 1/2 7 5 1/2 3/4 4 5/8 3 1/2 4
3 7 1/2 6 3/4 4 5/8 3 1/2 4
3 1/2 8 1/2 7 3/4 8 5/8 3 1/2 4
4 9 7 1/2 3/4 8 5/8 3 1/2 4
5 10 8 1/2 7/8 8 3/4 3 3/4 4 1/4
6 11 9 1/2 7/8 8 3/4 4 4 1/2
8 13 1/2 11 3/4 7/8 8 3/4 4 1/4 4 3/4
10 16 14 3/4 1 12 7/8 4 1/2 5
12 19 17 1 12 7/8 4 3/4 5 1/4
14 21 18 3/4 1 1/8 12 1 5 1/4 5 3/4
16 23 1/2 21 1/4 1 1/8 16 1 5 1/4 5 3/4
18 25 22 3/4 1 1/4 16 1 1/8 5 3/4 6 1/4
20 27 1/2 25 1 1/4 20 1 1/8 6 1/4 6 3/4
24 32 29 1/2 1 1/4 20 1 1/4 6 3/4 7 1/4
Class 300 Flanges ASME B16.5 Length of Stud Bolts
NPS Outside Diameter of Flange The diameter of Bolt Circle The diameter of Bolt Holes Number of Bolts Diameter of Bolts Raised Face
0.06 in		 Ring Joint
1/2 3 3/4 2 5/8 5/8 4 1/2 2 1/2 3
3/4 4 5/8 3 1/4 3/4 4 5/8 3 3 1/2
1 4 7/8 3 1/2 3/4 4 5/8 3 3 1/2
1 1/4 5 1/4 3 7/8 3/4 4 5/8 3 1/4 3 3/4
1 1/2 6 1/8 4 1/2 7/8 4 3/4 3 1/2 4
2 6 1/2 5 3/4 8 5/8 3 1/2 4
2 1/2 7 1/2 5 7/8 7/8 8 3/4 4 4 1/2
3 8 1/4 6 5/8 7/8 8 3/4 4 1/4 4 3/4
3 1/2 9 7 1/4 7/8 8 3/4 4 1/4 5
4 10 7 7/8 7/8 8 3/4 4 1/2 5
5 11 9 1/4 7/8 8 3/4 4 3/4 5 1/4
6 12 1/2 10 5/8 7/8 12 3/4 4 3/4 5 1/2
8 15 13 1 12 7/8 5 1/2 6
10 17 1/2 15 1/4 1 1/8 16 1 6 1/4 6 3/4
12 20 1/2 17 3/4 1 1/4 16 1 1/8 6 3/4 7 1/4
14 23 20 1/4 1 1/4 20 1 1/8 7 7 1/2
16 25 1/2 22 1/2 1 3/8 20 1 1/4 7 1/2 8
18 28 24 3/4 1 3/8 24 1 1/4 7 3/4 8 1/4
20 30 1/2 27 1 3/8 24 1 1/4 8 8 3/4
24 36 32 1 5/8 24 1 1/2 9 10

Dimension Chart Of ASTM F467 N04400 Studs

NPS DIA
bolts (in)		 Length
RF		 Length
RTJ		 Number
of bolts
1/2 1/2 55 4
3/4 1/2 65 4
1 1/2 65 75 4
1¼ 1/2 70 85 4
1½ 1/2 70 85 4
2 5/8 85 95 4
2½ 5/8 90 100 4
3 5/8 90 100 4
3½ 5/8 90 100 8
4 5/8 90 100 8
5 3/4 95 110 8
6 3/4 100 115 8
8 3/4 110 120 8
10 7/8 115 125 12
12 7/8 120 135 12
14 1 135 145 12
16 1 135 145 16
18 1.1/8 145 160 16
20 1.1/8 160 170 20
24 1¼ 170 185 20

Range of Monel 400 Bolts

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Monel 400 Anchor Bolts

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Monel 400 Allen Bolts

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Monel 400 Carriage Bolts

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Monel 400 Eye Bolts

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Monel 400 Elevator Bolts

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Monel 400 Hollow Hex Bolts

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Monel 400 Hollow Allen Bolts

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Monel 400 Hex Bolts

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Monel 400 Lag Bolts

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Monel 400 J Bolts

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Monel 400 Machine Bolts

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Monel 400 Shoulder Bolts

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Monel 400 Stud Bolts

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Monel 400 Square Head Bolts

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Monel 400 Socket Head Bolts

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Monel 400 U Bolts

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Monel 400 Double End Stud Bolts

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Monel 400 Weld Stud Bolts

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Monel 400 Tap End Stud Bolts

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Monel 400 Stud Bolt With Reduced Shank

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Monel 400 Fully Threaded Stud Bolts

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Monel 400 Flange Stud Bolts

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Monel 400 Threaded Bolts

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Monel 400 Jack Bolts

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Monel 400 Structural Bolts

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Monel 400 Plow Bolts

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Monel 400 Metric Bolts

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Monel 400 Hex Tap Bolts

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Monel 400 Hex Machine Bolts

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Monel 400 Shoulder Eye Bolts

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Monel 400 Serrated Flange Bolts

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Monel 400 Turned Eye Bolts

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Monel 400 Long Bolts

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Monel 400 Bent Bolts

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Monel 400 Square U Bolts

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Monel 400 Button Head Bolts

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Monel 400 T Bolts

Different Types of Monel 400 Bolts

  • Monel 400 Flanged Bolts
  • Monel 400 Hex Bolts
  • Monel 400 U Bolts
  • Monel 400 Shoulder Bolts
  • Monel 400 Eye Bolts
  • Monel 400 Heavy Hex Bolts
  • Monel 400 Hollow Hex Bolts
  • Monel 400 Hollow Allen Bolts
  • Monel 400 Machine Bolts
  • Monel 400 Socket Head Bolts
  • Monel 400 Hex Flange Bolts
  • Monel 400 Lag Bolts
  • Monel 400 J Bolts
  • Monel 400 Elevator Bolts
  • Monel 400 Hanger Bolts
  • Monel 400 Carriage Bolts
  • Monel 400 Allen Bolts
  • Monel 400 Anchor Bolts
  • Monel 400 Countersunk Bolts
  • Monel 400 Stud Bolts
  • Monel 400 Square Head Bolts
  • Monel 400 Stud Bolts
  • Monel 400 Full Threaded Stud Bolts
  • Monel 400 Tap End Stud Bolts
  • Monel 400 Double End Stud Bolts
  • Monel 400 Reduced Shank Stud Bolts
  • Monel 400 Flange Bolting Stud Bolts
  • Monel 400 Weld Studs
  • Monel 400 Threaded Rods
  • Monel 400 Hex Head Bolts
  • Monel 400 Jack Bolts
  • Monel 400 Structural Bolts
  • Monel 400 Step Bolts
  • Monel 400 Square Head Machine Bolts
  • Monel 400 Plow Bolts
  • Monel 400 Metric Bolts
  • Monel 400 Hex Tap Bolts
  • Monel 400 Hex Machine Bolts
  • Monel 400 Shoulder Eye Bolts
  • Monel 400 Serrated Flange Bolts
  • Monel 400 Turned Eye Bolts
  • Monel 400 Long Bolts
  • Monel 400 Bent Bolts
  • Monel 400 Square U Bolts
  • Monel 400 Timber Bolts
  • Monel 400 12 Point Flange Bolts
  • Monel 400 Button Head Bolts
  • Monel 400 Hexagon Flange Bolts
  • Monel 400 Stud Bolts
  • Monel 400 Hexagon Head Bolts
  • Monel 400 Lifting Eye Bolts
  • Monel 400 T Bolts
  • Monel 400 Threaded Bolts

Key Technical Features

  • Superior seawater resistance: Monel 400 maintains structural integrity in continuous seawater exposure, making it ideal for offshore platforms and shipbuilding applications where chloride corrosion is critical.
  • High mechanical stability: With tensile strength up to 620 MPa, these bolts withstand dynamic loading in pumps, valves, and pressure vessel assemblies.
  • Stress corrosion cracking resistance: Unlike stainless steels, Monel 400 resists cracking in chloride-rich and acidic environments, improving long-term reliability.
  • Wide temperature usability: Suitable for cryogenic service and elevated temperatures up to 480°C, ensuring stable performance in thermal cycling systems.
  • Dimensional precision: Manufactured under tight tolerances as per ISO and DIN standards, ensuring interchangeability in critical assemblies and engineered systems.
  • Excellent weldability and machinability: Enables easy fabrication without compromising structural integrity or corrosion resistance.
  • Non-magnetic properties: Ideal for sensitive instrumentation, marine navigation systems, and electronic housings where magnetic interference must be avoided.
  • Long service life: Reduces maintenance frequency in aggressive industrial environments, lowering lifecycle costs for end users.

Industry Applications

Monel 400 Bolts are widely used in industries requiring resistance to seawater, acids, and high-pressure environments. They are selected when standard stainless steel fasteners fail under chemical or marine exposure conditions.

  • Marine Engineering & Shipbuilding: Used in hull assemblies, propeller shaft components, and seawater piping systems exposed to continuous saltwater immersion.
  • Oil & Gas Offshore Platforms: Securing valves, flanges, and pressure containment systems operating in corrosive offshore environments.
  • Chemical Processing Plants: Applied in reactors, heat exchangers, and acid-handling equipment exposed to hydrofluoric and sulfuric acids.
  • Desalination Plants: Used in high-salinity water processing systems where chloride corrosion is severe.
  • Power Generation Industry: Installed in cooling water systems and turbine auxiliary structures.
  • Aerospace Ground Systems: Used in support equipment requiring corrosion resistance and non-magnetic properties.
  • Marine Pump & Valve Systems: Ensures leak-proof fastening in seawater pumping assemblies and hydraulic systems.

Manufacturing & Quality Assurance

Monel 400 Bolts are produced using precision cold forging and CNC machining processes to ensure uniform grain structure and dimensional accuracy. Each batch undergoes controlled heat treatment to maintain alloy stability and corrosion resistance.

Quality checks include dimensional inspection, tensile testing, hardness verification, and surface finish validation. Every lot is traceable through heat number tracking and material test certificates (MTC). Compliance with ISO 9001:2015, ASTM B164, and RoHS requirements ensures global acceptance across regulated industries.

KK Fasteners integrates multi-stage inspection protocols to ensure that each fastener meets stringent performance benchmarks before dispatch to international clients.

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Exceptional Customer Service

Personalized assistance, prompt responses, and a commitment to meeting your needs, making your purchase process seamless.

Send us your Requirement for Monel 400 Bolts

We can assure you one of best prices in the Industry. We respond to all enquiries with in 4-8 hours on all business days. Send us your requirement on inquiry@kkfasteners.com
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Monel 400 Bolts - FAQs

Monel 400 Bolts are corrosion-resistant fasteners made from a nickel-copper alloy (UNS N04400). They are designed for severe environments such as seawater, chemical processing, and offshore oil & gas systems where high resistance to corrosion and stress cracking is required.

Monel 400 fasteners are made from a nickel-copper alloy containing approximately 63% nickel and 28–34% copper. This composition provides excellent resistance to seawater, hydrofluoric acid, and alkaline media while maintaining good mechanical strength and stability.

These bolts are generally manufactured in compliance with ASTM B164 / ASME SB164 standards. Dimensional and threading specifications may follow DIN, ISO, BS, or ANSI standards depending on application and customer requirements.

Monel 400 Bolts are widely used in marine engineering, offshore oil rigs, chemical processing plants, desalination units, and seawater handling systems. They are selected where stainless steel fails due to chloride-induced corrosion.

A reliable supplier should provide certified material test reports (MTC), compliance with ASTM standards, full traceability, and proven export experience. Engineering support and customization capability are also key indicators of quality sourcing.

Monel 400 Bolts - Export Destination

Monel 400 Bolts Supplier in North America
Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, United States.
Monel 400 Bolts Supplier in South America
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Falkland Islands, French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.
Monel 400 Bolts Supplier in Europe
Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Czech Republic (Czechia), Denmark, Estonia, Finland, France, Germany, Greece, Holy See, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, Russia, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom.
Monel 400 Bolts Supplier in Asia
Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, Brunei, Cambodia, Cyprus, Georgia, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Laos, Lebanon, Malaysia, Maldives, Mongolia, Myanmar, Nepal, Oman, Pakistan, Palestine, Philippines, Qatar, Saudi Arabia, Singapore, South Korea, Sri Lanka, State of Palestine, Syria, Taiwan, Tajikistan, Thailand, Timor-Leste, Turkey, Turkmenistan, United Arab Emirates, Uzbekistan, Vietnam, Yemen.
Monel 400 Bolts Supplier in Australia
Australia, Fiji, Kiribati, Marshall Islands, Micronesia, Nauru, New Zealand, Palau, Papua New Guinea, Samoa, Solomon Islands, Tonga, Tuvalu, Vanuatu.

Monel 400 Bolts deliver unmatched performance in seawater, chemical, and high-corrosion environments where standard fasteners degrade quickly. With strict dimensional control, certified material quality, and global supply capability, KK Fasteners supports critical industries with reliable fastening solutions engineered for long service life.

For technical specifications, pricing, or custom manufacturing requirements, contact the engineering team at KK Fasteners to request a detailed quotation and material certification sheet.

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