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  • 1/B, Ground Floor, Siddhi Apartment,
    10th Khetwadi Back Road, Mumbai 400 004

Nut Manufacturer in India

Nut Manufacturer in India
  • Imperial Sizes : 3/6" to 2"
  • Metric Sizes: M3 – M56
  • Head Drive: Six-Lobe, Phillips, Phillips/Slot
  • Threads Configuration : ASME B1.1 2A/3A – 2B/3B
  • Advantages: Withstand High Temperatures
  • Material: Ferrous and Non Ferrous Metals
  • Grade : Class 8.8, 10.9, 12.9
  • Sizes Can Be Manufacture: Up to M72
  • Form: Hex, Eye, Dome, Wing, T Nut
  • Coating : PTFE, Phosphate, Teflon, Zinc, Xylon
  • Ideal Choice For : Industrial Applications
  • Standard: ASME B18 2.2
  • Certificate: EN 10204/3.1B

Understand Types of Nuts and Sizes as per ASME B18 2.2.

As a trusted nut manufacturer in India, We provide a wide variety of steel nuts in different materials and sizes as per ASME b18 2.2. Our custom nut product design engineers are highly skilled in CAD (Computer Aided Design).

Why Choose Us as Top Nut Manufacturer in India?

Our Technology and Processes

  • CAM/ CAD Design
  • Well Organized Production
  • Data Driven Approach to Quality Control
  • Biggest Global Provider of Nuts
  • Automated Material Handling
  • Real Time Monitoring

Why Choose Us as Top Nut Manufacturer in India?


Automotive Nut Supplier in Mumbai From German Sourced Raw Material

Since 2015, Dalloyed Fasteners, based in Mumbai, nut manufacturer in India. Custom nut available in size range M3 to M42, with a very high quality product range as per ANSI b18 2.2. Our automotive nut are made with the top-quality raw material.


Types of Nuts and Their Uses


Hex Nut

Hex Nut

Construction and Automotive

Nylock Nut

Nylock Nut

Industrial Applications

Acorn Nut

Acorn Nut

Furniture and Automotive Parts

Jam Nut

Jam Nut

Ideal for Machinery

Square Nut

Square Nut

Furniture Assembly

T Head Nut

T Head Nut

Woodworking Applications

Wing Nuts

Wing Nuts

Machinery and Equipment

Slotted Nuts

Slotted Nuts

Aerospace and Railway


Nut Specification


 Size In Ready Stock

Size In Ready Stock

  • M2 To M52
Custom Nut Threads

Custom Nut Threads

  • UN, BSW, CBSF, UNF
  Industrial Nut Manufacturing Process

Industrial Nut Manufacturing Process

  • CNC Machine
  • Cold forging
  • Hot forging
Characteristics Of Automotive Nut

Characteristics Of Automotive Nut

  • Ideal for High Temperatures
  • Higher Creep Resistance
  • Excellent Formability
  Marine Nut Testing

Marine Nut Testing

  • Hardness Testing
  • X-Ray Test
  • Dimensional Inspection
Application Of Construction Nut

Application Of Construction Nut

  • Construction
  • Heavy Machinery
  • Energy Production
  Types Of Packaging

Types Of Packaging

  • Carton Box
  • Custom
  • Wooden Cases
Origin of Raw Material

Origin of Raw Material

  • European
  • Janpanese
  • German


Custom Nut Grades and Standards


Steel Nut Grades Description
Grade 2 Nut Low Stress Applications
Grade 5 Nut Automotive and Machinery Applications
Grade 8 Nut Heavy Duty Applications
Nut Standards
ASTM American Society for Testing and Materials
ISO International Organization for Standardization

Nut Manufacturing Process


Material Selection & Inspection

Material Selection & Inspection

Cutting to Required Length

Cutting to Required Length

Hot Forging (Head Formation)

Hot Forging (Head Formation)

Trimming & Punching

Trimming & Punching

Heat Treatment (if required as per ASTM)

Heat Treatment (if required as per ASTM)

Thread Rolling and Machining

Thread Rolling and Machining

Surface Finishing

Surface Finishing

Final Inspection

Final Inspection

Packaging & Marking

Packaging & Marking

Since 10 Years, Experts in Manufacturing Steel Nut in India for Oil and Gas Industry

Japanese Origin nut manufacturer in India, Maintain ready stock of marine nut for oil and gas plant. Our industrial nut product design engineers are highly skilled in CAD (Computer Aided Design).


Common Materials Used for Steel Nut


Material Weight Strength Corrosion resistance Cost
Steel Nut Heavy Very strong Not very corrosion resistant Inexpensive
Brass Nut Heavy Softer Than Steel More corrosion resistant than steel Expensive
Nylon Nut Lightweight Strong Plastic Resistant to corrosion and chemicals Inexpensive
Stainless Steel Nut Heavy Strong Excellent corrosion resistance Expensive

Nut Torque Chart


Thread Size Torque for Standard Threads in [N m]
Nut Grade Garde 8.8 Garde 10.9 Garde 12.9
M2 0,35 0,49 0,59
M4 2,97 4,18 5,02
M6 10,25 14,41 17,29
M8 24,93 35,06 42,07
M10 49 70 83
M12 86 121 146
M14 138 194 233
M16 215 302 363
M18 296 417 500
M20 420 590 709
M22 574 807 968
M24 726 1020 1224
M30 1445 2032 2438
M36 2528 3555 4266
M42 4050 5696 6835
M48 6086 8559 10271
M52 7876 11076 13292
M56 9793 13772 16526
M60 12219 17183 20619

How to Calculate Proof Load of Nut?


Metric Nuts : Coarse Threads Proof Load - Fp (N)
Thread d Pitch P Garde 8 Garde 10 Garde 12
M6 1.00 mm 17200 20900 23100
M8 1.25 mm 31800 38100 42500
M10 1.50 mm 50500 60300 67300
M12 1.75 mm 74200 88500 100300
M14 2.00 mm 101200 120800 136900
M16 2.00 mm 138200 164900 186800
M18 2.50 mm 176600 203500 230400
M20 2.50 mm 225400 259700 294000
M22 2.50 mm 278800 321200 363600
M24 3.00 mm 324800 374200 423600
M30 3.50 mm 516100 594700 673200
M36 4.00 mm 751600 866000 980400

Comparison Of Automotive Nut Grades By Standard


Grade Material Standard Strength Applications
Grade 8.8 Alloy or Carbon Steel ISO 898-1 Comparable to Grade 5 Automotive
Grade 10.9 Alloy or Carbon Steel ISO 898-1 Comparable to Grade 8 Industrial applications
Grade 12.9 Alloy Steel ISO 898-1 Strongest metric Critical applications
SAE Grade 2 Carbon Steel SAE J429 60,000-74,000 PSI Household repairs applications
SAE Grade 5 Alloy or Carbon Steel SAE J429 105,000-120,000 PSI Machinery
SAE Grade 8 Alloy or Carbon Steel SAE J429 Up to 150,000 PSI Aerospace
A2-70 Stainless Steel ASTM 74,000 PSI Corrosion resistant applications
A4-70 Stainless Steel ASTM 180,000 PSI Marine applications
Titanium Grade 5 Titanium ASTM 138,000 PSI Medical devices
Grade A Nuts Carbon Steel SAE Exceeds Grade 2 Light-duty applications
Grade B Nuts Carbon Steel SAE Same to Grade 5 Medium strength applications
Grade G Nuts Carbon Steel SAE Same to Grade 8 Structural applications
ASTM A307 Grade B Carbon Steel ASTM A307 Up to 100,000 PSI Piping, flanged joints

Classification of Industrial Nut


  • Type A
  • Type B
  • Type C
  • Type D

Nut Weight Chart in KG


ISO 4032 (Approx Weight In KG Per 1000 Piece)

Size Weight
M10 11.69
M12 17.26
M14 26.00
M16 33.58
M18 46.00
M20 64.59
M22 75.00
M24 110.40
M27 158.00
M30 222.00
M33 279.00
M36 387.00
M39 496.00
M42 603.00

How to Choose the Right Marine Nut Drivers for Your Manufacturing Needs?


  • Handheld Automatic Nut Drivers
  • Automated Nut Driver Systems

Common Metal Nut Applications and Industries


Common Metal Nut Applications and Industries

Construction Nut Torque Requirements and Guidelines


  • Refer to manufacturer specifications
  • Use a torque wrench
  • Follow a gradual tightening process

Industrial Nut Available DIN, ISO and ASTM Standard in Custom Sizes

High performance nut manufacturer in India, Keep construction nut stock in 1/2" To 4" sizes petrochemicals applications. We offer customization options to our customers according to their project requirements.


ASTM Standard for Nut


DIN Standard for Nut


Hardness Table for Thread Rolling Nuts by Class


Class Hardness
Class 4 Nut 22 to 32 HRC
Class 8 Nut 33 to 39 HRC
Class 10 Nut 38 to 44 HRC

Buy Custom Nut in Six-Lobe, Phillips, Phillips/Slot Head Drive

Dalloyed Fasteners is a ISO certified nut manufacturer in India. With excellent manufacturing facilities and in house capability.


Nut Driver Size Chart


Nut Size Wrench Size / Nut Driver (Imperial)
1/4" 0.4375 inch 7/16"
5/16" 0.5 inch 1/2"
3/8" 0.5625 inch 9/16"
7/16" 0.6875 inch 11/16"
1/2" 0.75 inch 3/4"
5/8" 0.9375 inch 15/16"
3/4" 0.125 inch 1-1/8"
7/8" 0.3125 inch 1-5/16"
1" 0.5 inch 1-1/2"

Nut Sizes Chart


Size Thread Pitch
M1.6 0.35
M2 0.4
M2.5 0.45
M3 0.5
M4 0.7
M5 0.8
M6 1
M8 1.25
M10 1.5
M12 1.75
M16 2
M18 2.5
M20 2.5
M22 2.5
M24 3
M27 3
M30 3.5
M33 3.5
M36 4
M39 4
M42 4.5
M45 4.5
M48 5
M52 5
M56 5.5
M60 5.5
M64 6

Nut Manufacturing Machine


Automatic Nut Forming Machine

  • Automatic Nut Forming Machine
Hot Nut Making Machine

  • Hot Nut Making Machine
T Nut Milling Machine

  • T Nut Milling Machine
Heavy Nut Making Machine

  • Heavy Nut Making Machine
Cold Forged Nut Making Machine

  • Cold Forged Nut Making Machine
Automatic Nut Wire Thread Rolling

  • Automatic Nut Wire Thread Rolling