Nut Bolt Manufacturer in India

Fasteners Manufacturer in Mumbai according to ASME B18.2.1 / ASTM and DIN standards

Nut Bolt

 

What are Industrial Fasteners ?

Industrial fasteners are devices or tools, which can be used to connect or join two or more components together in an industrial and commercial setup. These fasteners can be permanent or temporary depending on the application where they are affixed. When temporary parts are removed they don’t put any pressure or jeopardize the existing system. Most of these fasteners are mechanical joints that help in the safe and reliable fastening of joints. A fastener plays an important role in our day-to-day lives from, furniture to vehicles. There are different types of fasteners, which include bolts, screws, nuts, washers, and so on. 

Nut Bolt Metric Sizes and International Standards

Metric bolts and nuts are essential fasteners in the critical assembly of different equipment and machinery parts. These bolt and nuts are manufactured following standards set by ISO and the German institution of DIN. The bolts and nuts are referred to as M sizes eg. M3, M12, etc. The sizes of these components are specified using the diameter, pitch, and length dimensions in millimeters. Where M is the metric thread, the number on the product (e.g. 8) is the nominal diameter, and the number 1.0 is the pitch of the threaded bolt. The final length of the module is 12mm. The coarse nuts range in nominal diameter from M10 to M160 with nut sizes between 17 to 230. For fine threaded bolts, the sizes range between M16 to M125 with nut sizes between 24 to 180.

Manufacturer of high tensile nut bolts in Grade 8.8, Gr 10.9 and Grade 12.9

 


Table of Content

 

nut and bolts

 

View online Price List of Hot Forged Fasteners and hot dip galvanized bolts

 

What are Hot forged fasteners?

Hot forged fasteners are devices, which are heated at extreme temperatures to soften the metal and then shape it in accurate shapes. The fasteners produced from this method are very strong in comparison to machined or cast components. Hot forged fasteners exhibit superior accuracy with excellent surface tolerance. The fastener produced from this process has low hardness with higher ductility and enhanced yield strength. The metal gains its strength after it is shaped in exact sizes. The coarse grain structure breaks up and is replaced by finer grains, which gives it enhanced properties and tolerances. Fasteners can be forged in a range of sizes and shapes.

 

What is hot dip galvanised bolts & nuts?

Hot dip galvanization is amongst the oldest methods used to protect steel fasteners against corrosion. In this process bolts and nuts are immersed in tanks containing over 70 tons of 840 degrees F zinc. After keeping the items in the tank, it metallurgical bonds with the zinc and forms a protective coating on the component. Excess zinc is removed from the threads to form high-quality products. The HDG process provides two types of galvanic and corrosion protection. It acts as a semi-impermeable barrier against toxicants and corrosive media. The coating requires little to no maintenance and protects against corrosion for 50-70 years in different stress-induced environments.

 

Nuts And Bolts Price List

Fasteners Type Fasteners Price Per Piece
10.9 Grade Metric Thread Steel Black DIN 933 Hexagon Head Bolts US $ 0.001-0.005 / Piece
M6X12 DIN 933 Hot Forged Hex Bolt US $ 0.1-0.15 / Piece
Metric Standard Class 8.8 Hex Flange Head Zp Grain Silo Bolt US $ 0.01-0.03 / Piece
Grade 8.8 Hot DIP Galvanized Hex Bolt DIN 933 HDG Fastener US $ 0.01 / Piece
ASTM A325 High Structural Hex Head Bolts and Nuts US $ 0.3 / Piece
ASTM A325/A490heavy Hex Structural Bolt US $ 0.17 / Piece
Hex Head Bolt Black Color Grade 8.8 US $ 1000-2000 / Ton
HDG Zp Plain Finish, 4.8 8.8 Grade L/J/U/V Shape Anchor Bolt US $ 1 / Piece
43.6mm Length 19 Hex Steel Wheel Lug Nut Open End US $ 0.1-1 / Piece
DIN 6923 Hex Flange Nuts Zinc Plated US $ 750-800 / Ton

 

Specification Analysis of Automotive Fasteners

Fasteners Standard ASTM A194 / ASME SA 193
Size M 02 to M 33
Fasteners Length 3 mm to 200 mm
Threads: METRIC, BSW, BSF, UNC, UNF or as required
Fasteners Standard: DIN, ISO, JIS, GB, IS, BS, ASTM, ANSI – American National Standards Institute
  • ANSI B 18.2.4 2M
  • ANSI B 28.2.4 1M
  • stainless steel Stud Bolt length are defined in ASME B16.5 standard
  • Hex nuts are defined in ASME B18.2.2
  • ASME B18.5
  • BS en iso 3506

DIN: DIN 931, DIN 933, DIN 934, DIN 970

UTS – Unified Thread Standard : UNC, UNF, UNEF, UNS, NPT, NPTF

ISO – International Organization for Standardization : ISO 4032, ISO 4033, JIS standards
SCOPE OF MANUFACTURE
  • Up to M36 / 1-1/2” Dia, up to 1100mm lg
  • CNC Machined Fasteners, up to M100 / 4” Dia, up to 1500mm lg
Fasteners Dia M6 to M64 (1/4" - 2.5")
Length 12 MM - 500 MM (Upto 20 Inch)
IS Bolts 1363, 1364
DIN Bolts 931, 933
ISO Bolts ISO 3506
Fasteners Form of: Hex, Square, Round, Threading as per Gauge Etc.
Bolts Head drive: Phillips, Slotted, Phillips/Slot, Six-Lobe, etc
fasteners Test Certificate: Manufacturer Test Certificate as per EN 10204 / 3.1
Finishing: Zinc (yellow, white, blue, black), black oxide, , Geometry, Dacroment, anodizing, nickel plated, plated zinc-nickel, Passivated, Self-Colour, Hot Dip Galvanised (HDG), Bright Zinc Plated (BZP), Sherardized, Mechanically Applied coating and some special one like DACROMET
Fasteners Production process M2-M24: Cold Froging, hot forging M24-M100, , machining and CNC for Customized connecting element
Origin and service-region: European, Origin of Western European. However projects with eastern origin are possible on request.
Top Manufacturers SPAX® Screws, GKW, Unbrako, Kundan, APL, Sundaram Precision, Infasco, EBY Fasteners Etc.
Fasteners Types stainless steel Nuts, Bolts, Screws, Socket Screw, Sockets, Studs, Screw, Nut, Spring Washers, Hex Set Screw, Socket Hexagon Head Screw, Cap Screw, Wing Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw, Washers, Studs, Anchors, Hex Nut,Marine Anchors, Hexagon Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Anchor Bolt, U- Bolts, J Bolts, T-Head Bolts, Mushroom Head Square Neck Bolts, Eye Bolt, Foundation Bolts, Structural Bolts

 

Hot Forged Fasteners Available Grade

Stainless Steel Fasteners


Duplex/ Super Duplex Fasteners


Titanium Fasteners

Nickel Alloy Fasteners


Other Fasteners

 

Different Types Of Nuts And Bolts

Hex Bolts

Hex Bolts

Countersunk Bolts

Countersunk Bolts

U Bolts

U Bolts

Tie Rods

Tie Rods

Dome Nuts

Dome Nuts

Hex Nuts

Hex Nuts

Lock Nuts

Lock Nuts

Wing Nuts

Wing Nuts

Stud Bolt

Stud Bolt

Threaded Rod

Threaded Rod

Nut Bolt

Nut Bolt

Washer

Washer

 

An Indian Manufacturer but Global supplier of Nut Bolt Fasteners, check what and where

Philippines, Chile, Canada, Iran Grade 4.8 Hardware Bolt Hot Forged Fasteners
Europe, United Arab Emirates (UAE), Romania, Norway Nickel Plated High Tensile Fasteners
Sweden, Netherlands, Malaysia, Russia High Tensile Double End Threaded Stud Bolts Fastener
Malaysia, Egypt, Los Alamos -Mexico Grade 8.8 High Tensile Fasteners
Singapore, United Kingdom -UK, NY 12203 (USA), Malaysia High Tensile Nuts and Bolts Fasteners for Auto Parts
Dammam -KSA, UK, Philippines, Poland Alloy Steel Hex Socket Head Cap Screw DIN912 High Tensile Strength Allen Bolt Fasteners
Qatar, Singapore, Europe, Malaysia High Tensile Titanium DIN 912 Round Head Bolt Internal Hex
Czechia, Malaysia, Thailand, Japan High Tensile Full Thread Hex Tap Bolt for Fine Thread Fasteners
Malaysia, China, Bangladesh, Colombia High Tensile Grade 8.8 10.9, 12.9 DIN933 DIN931 Hex Bolt Fasteners
South Africa, Philippines, Kuwait, Taiwan High Tensile Foundation Bolt Fasteners
Bahrain, Malaysia, Singapore, South Korea High Tensile Strength Cup Screw DIN912 Hex Socket Head Cap Screw M8 Fasteners
Philippines, Belgium, UK, Indonesia Hexagon Nuts DIN934 with High Tensile Fasteners
Oman, Thailand, Hong Kong, France Thin Bolt/ High Tensile Bolts for Switches& Crossing Fasteners
Germany, Malaysia, Turkey High Tensile Strength Hexagon Socket Head Cap Bolt M4-M48 Fasteners

 

Complete Information about ISO bolt dimensions, Standards, Grades, Class, Size and Torque Chart

 

What is Grade 8.8 Bolts?

Grade 8.8 bolts are high tensile bolts, which possess superior strength and stability. These structural bolts belong to the DIN 933 grade. They are used to hold or secure objects in place for long periods. Some bolts can be dismantled for routine cleaning and inspection. These medium carbon steel bolts possess a minimum tensile strength of 800Mpa and exhibit a minimum yield strength of 640Mpa. The carbon content within these bolts enables it to possess good workability and ductility. Based on the thickness of the material they can be quenched and tempered to meet the tensile requirements of these modules.

 

Dimensions chart of Grade 8.8 bolts

Dimensions chart of Grade 8.8 bolts

NOMINAL SIZE (D)
BODY DIAMETER
HEAD THICKNESS
ACROSS THE FLATS
ACROSS BOLTS 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

 

Assorted Nuts Dimensions Schedule

Assorted Nuts Dimensions Schedule

Nominal Size or Basic Major Thread Diameter F G H
Width, Across Flats Width, Across Corners Thickness
Basic Max Min Max Min Basic Max Min
1/4.25007/16.438.428.505.4887/32.226.212
5/16.31251/2.500.489.577.55717/64.273.258
3/8.37509/16.562.551.650.62821/64.337.479
7/16.437511/16.688.675.794.7683/8.385.365
1/2.50003/4.750.736.866.8407/16.448.427
9/16.56257/8.875.8611.010.98231/64.496.473
5/8.625015/16.938.9221.0831.05135/64.559.535
3/4.75001-1/81.1251.0881.2991.24041/64.665.617
7/8.87501-5/161.3121.2691.5161.4473/4.776.724
11.00001-1/21.5001.4501.7321.65355/64.887.831
1-1/81.12501-11/161.6881.6311.9491.85931/32.999.939
1-3/81.37502-1/162.0621.9942.3822.2731-11/641.2061.138
1-1/21.5002-1/42.2502.1752.5982.4801-9/321.ASTM A194 GR. 81.245
1-5/81.62502-7/162.4382.3562.8152.6861-25/641.4291.353
1-3/41.75002-5/82.6252.5383.0312.8931-1/21.5401.460
22.000033.0002.9003.4643.3061-23/321.7631.675
2-1/42.25003-3/83.3753.2633.8973.7191-15/161.9861.890
2-1/22.50003-3/43.7503.6254.3304.1332-5/322.2092.105
2-3/42.75004-1/84.1253.9884.7634.5462-3/82.4312.319

 

Hot Dip Galvanized Bolts Torque Chart

Bolts Torque Specifications
Bolts Size, Inches or #
Threads, Per Inch
Standard Dry Torque in Inch-Pounds

Stainless Steel

Stainless Steel
#2562.52.6
643.03.2
#3483.94.0
564.44.6
#4405.25.5
486.66.9
#5407.78.1
449.49.8
#6329.610.1
4012.112.7
#83219.820.7
3622.023.0
#102422.823.8
3231.733.1
Bolt Size, Inches or #
Threads, Per Inch
Standard Dry Torque in Inch-Pounds

Stainless Steel

Stainless Steel
1/42075.278.8
2894.099.0
5/1618132138
24142147
3/816236247
24259271
7/1614376393
20400418
1/213517542
20541565
Bolt Size, Inches or #
Threads, Per Inch
Standard Dry Torque in Inch-Pounds

Stainless Steel

Stainless Steel
9/1612682713
18752787
5/81111101160
1812441301
3/41015301582
1614901558
7/8923282430
1423182420
1834403595
1431103250
Bolt Size, Inches or #
Threads, Per Inch
Standard Dry Torque in Foot-Pounds

Stainless Steel

Stainless Steel
1 1/87413432
12390408
1 1/47523546
12480504
1 1/26888930
12703732

 

Heavy Hex Nuts Dimensions Standards

Nominal Size or Basic Major Thread Diameter F G H
Width Across Flats Width Across Corners Thickness
Basic Max Min Max Min Basic Max Min
1/4.25001/2.500.488.577.55615/64.250.218
5/16.31259/16.562.546.650.62219/64.314.280
3/8.375011/16.688.669.794.76323/64.377.341
7/16.43753/4.750.728.866.83027/64.441.403
1/2.50007/8.875.8501.010.96931/64.504.464
9/16.562515/16.938.9091.0831.03735/64.568.526
5/8.62501-1/161.0621.0311.2271.17539/64.631.587
3/4.75001-1/41.2501.2121.4431.38247/64.758.710
7/8.87501-7/161.4381.3941.6601.58955/64.885.833
11.00001-5/81.3251.5751.8761.79663/641.012.956
1-1/81.12501-13/161.8121.7562.0932.0021-7/641.1391.079
1-1/41.250022.0001.9382.3092.2091-7/321.2511.187
1-3/81.37502-3/162.1882.1192.5262.4161-11/321.3781.460
1-1/21.50002-3/82.3752.3002.7422.6221-15/321.5051.433
1-5/81.62502-9/162.5622.4812.9592.8281-19/321.6321.556
1-3/41.75002-3/42.7502.6623.1753.0351-23/321.7591.679
22.00003-1/83.1253.0253.6083.4491-31/322.0131.925
2-1/42.25003-1/23.5003.3884.0413.8622-13/642.2512.155
2-1/22.50003-7/83.8753.7504.4744.2752-29/642.5052.401
2-3/42.75004-1/44.2504.1124.9074.6882-45/642.7592.647
33.00004-5/84.6254.4755.3405.1022-61/643.0132.893
3-1/43.250055.0004.8385.7745.5153-3/163.2523.124
3-1/23.50005-3/85.3755.2006.2075.9283-7/163.5063.370
3-3/43.75005-3/45.7505.5626.6406.3413-11/163.6703.616
44.00006-1/86.1255.9257.0736.7553-15/164.0143.862

 

Steel Nuts Size Chart

Steel Nuts Size, (mm)
Diameter*, (mm)
Height, (mm)
Hex Nuts
Jam Nuts
Nylock Nuts
2
4
1.6
1.2
-
2.5
5
2
1.6
-
3
5.5
2.4
1.8
4
4
7
3.2
2.2
5
5
8
4
2.7
5
6
10
5
3.2
6
7
11
5.5
3.5
-
8
13
6.5
4
8
10
17
8
5
10
12
19
10
6
12
14
22
11
7
14
16
24
13
8
16
18
27
15
9
18.5
20
30
16
10
20
*This is the diameter across the flats. It is also the size of wrench to use.

 

Indian Standard Code of Steel Bolt

  • Bolts- IS 3757, IS 1364, IS 6639, IS 3640
  • IS 3757 - High Tensile Friction Grip Bolts.
  • IS 6623 - High Tensile Friction Grip Nuts.
  • IS 6649 - High Tensile Friction Grip Washers.
  • IS 3640 - Hexagon Fit Bolts.
  • IS 1367 - Alloy Steel and Low Carbon High Tensile Nuts, Bolts, Studs as per IS 4218
  • Studs- IS 1862.
  • IS 6610 - Heavy washer for Steel structure.
  • Nuts- IS 6623, IS 1364
  • Washers- IS 6648, IS 6610, IS 2016.
  • IS 6639 - Hexagon Bolts for Steel structure.

 

What are High Tensile Fasteners?

High tensile fastening components are devices that are able to hold different structures strongly and very firmly. These fasteners are preferred in high-risk applications that require utmost reliability and safety. If compared to normal fasteners, these fasteners possess at least 25 to 50 percent more strength. The tensile strength of any element is characterized by the maximum amount of stress an item can withstand before succumbing to failure or breakdown. The total stress of a module can suffice is referred to a grade. This grade is calculated by making use of force per unit area of the item.

 

Markings and Strength Chart of High Tensile Fasteners

Bolts Head Marking Nominal Size Range
(mm)		 Class and
Material		 Mechanical Properties
Min. Yield Strength
(MPa)		 Proof Load
(MPa)		 Min. Tensile Strength
(MPa)
Usually Stamped A-2 or A-4 All sizes thru 20mm

A-2 & A-4 Stainless

Steel alloy with chromium and nickel

210 Min.
450 Typical

 N/A

500 Min.
700 Typical
Class 10.9 5mm - 100mm

Class 10.9

Alloy steel, quenched and tempered

940

 830

1040
Class 8.8 All sizes below 16mm

Class 8.8

Medium carbon steel, quenched and tempered

640

 580

800
16mm - 72mm 660 600 830
Class 12.9 1.6mm - 100mm

Class 12.9

Alloy steel, quenched and tempered

1100

 970

1220

 

What is Grade 10.9 Bolts ?

Grade 10.9 bolts are produced, making use of carbon and low boron steels. These high tensile bolts can be quenched or tempered. They exhibit a minimum tensile strength of 1040Mpa and a minimum yield strength of 940Mpa. The bolts are designed to protect the components from wear and damage due to the forces subjected to them by the application. The items in this grade subside the products in grade 8.8 and are very reliable. The bolts from this grade are highly versatile and possess superior corrosion resistance properties. They are widely used in motors, engines, railroad equipment, processing equipment, etc

 

Drive Style of Grade 10.9 bolts

Drive Style of Grade 10.9 bolts

 

Aerospace Fasteners British Standard

  • BS 3132 Fasteners
  • BS 1083 Fasteners
  • BS 4395 Fasteners

 

Industrial Fasteners ASTM Standard

B18.1.1 Fasteners Small Solid SS Rivets B18.8.1 Fasteners Stainless Steel Clevis Pins and Cotter Pins
B18.1.2 Fasteners Large SS Rivets B18.8.2 Fasteners SS Taper Pins, Dowel Pins, Straight Pins, Grooved Pins and Spring Pins
B18.2.1 Fasteners Stainless Steel Square and Hex Bolts and Screws B18.9 Fasteners Stainless Steel Plow Bolts
B18.2.2 Fasteners Stainless Steel Square and Hex Nuts B18.10 Fasteners SS Track Bolts and Nuts
B18.2.6 Fasteners Stainless Steel Fasteners for use in Structural Applications B18.11 Fasteners Miniature SS Screws
B18.3 Fasteners Stainless Steel Socket Cap, Shoulder and Set Screws B18.13 Fasteners Stainless Steel Screw and Washer Assemblies (Sems)
B18.5 Fasteners Stainless Steel Round Head Bolts B18.15 Fasteners SS Forged Eyebolts
B18.6.2 Fasteners SS Slotted Head Cap Screws, SS Square Head Set Screws, and Slotted Headless SS Set Screws B18.17 Fasteners Stainless Steel Wing Nuts, Thumb Screws and SS Wing Screws
B18.6.3 Fasteners Stainless Steel Machine Screws and SS Machine Screw Nuts B18.21.1 Fasteners SS Lock Washers
B18.6.4 Fasteners SS Thread Forming and Thread Cutting SS Tapping Screws and SS Metallic Drive Screws B18.22.1 Fasteners Stainless Steel Plain Washers
B18.7 Fasteners General Purpose Semi- Tubular Rivets, Full Tubular SS Rivets, SS Split Rivets and SS Rivet Caps B18.23.1 Fasteners SS Beveled Washers

 

Thread Style of ISO bolt

Thread Style of ISO bolt

 

ISO Standard of Nut Screw

Fasteners Type Metric Specification Fasteners Fasteners Scope
ASME /ANSI Fasteners DIN standard ISO standard
Hex Nuts B18.2.4.1M (style 1) 934 4032 Classes 6, 8, & 10
HCS B18.2.3.1M 931 4014 Partially Threaded
933 4017 Fully Threaded
960 8765 Partially Threaded (Fine)
961 8676 Partially Threaded (Fine)
SHCS B18.3.1 912 4762  
FHSCS B18.3.5 N/A 7991  
BHSHCS B18.3.4M N/A 7380  

 

What is Grade 12.9 Bolts and its uses ?

Grade 12.9 bolts are carbon structures, which belong to the ASTM F568 specification. These bolts possess a distinct black color due to the vigorous process used while producing them. The bolts within this grade possess a minimum tensile strength of 1220Mpa and a minimum yield strength of 1100Mpa. This makes them the highest grade of bolts fastener. The items in this grade are highly reliable and have approximately a 25% margin of safety when they are attached to the components. The bolts in this grade are used in high tensile applications, which include engine parts, motor casing, structural systems, gas processing, power generation, petrochemicals, heat exchangers, etc.

 

Weight Chart of Grade 12.9 bolts

MM THREADS AS PER IS 1363/67
APPROXIMATE WEIGHT IN KGS FOR 100 NOS
LENGTH Steel Fasteners DIAMETER
M 12 M 5 M 6 M 8 M 14 M 10 M 22 M 18 M 20 M 16
16 mm 0.0448 0.0743 1.0590 3.0211
20 mm 4.0892 0.0598 0.0812 1.0711 3.0411
25 mm 5.0252 0.0660 0.0897 1.0871 8.0170 3.0660
30 mm 5.0574 0.0737 1.0010 2.0070 9.0690 3.0912 18.0657 10.0707
35 mm 5.0974 0.0804 1.0120 2.0271 10.0000 4.0223 16.0026 19.0608 11.0416
40 mm 6.0410 0.0881 1.0230 2.0470 10.0288 4.0533 16.0667 20.0747 12.0107
45 mm 6.0859 0.0958 1.0340 2.0671 10.0504 4.0840 17.0241 21.0739 12.0821
50 mm 7.0299 1.0030 1.0450 2.0870 11.0261 5.0155 28.0409 17.0857 22.0727 13.0624
55 mm 7.0740 1.0560 3.0071 11.0628 5.0464 30.0120 18.0868 23.0810 14.0409
60 mm 8.0183 1.0670 3.0270 12.0255 5.0774 32.0051 20.0000 25.0126 15.0244
65 mm 8.0621 1.0781 3.0472 12.0626 6.0083 34.0014 21.0008 26.0455 16.0026
70 mm 9.0058 1.0890 3.0671 12.0987 6.0394 35.0461 22.0124 27.0778 16.0835
75 mm 9.0506 2.0000 3.0873 13.0228 6.0702 39.0063 23.0256 29.0070 17.0606
80 mm 10.0000 2.0111 4.0072 13.0889 7.0013 40.0000 24.0510 30.0303 18.0248
90 mm 10.0917 4.0472 14.0925 7.0634 41.0667 26.0042 33.0113 19.0841
100 mm 11.0820 4.0873 16.0340 8.0251 46.0296 27.0778 35.0714 21.0459
110 mm 12.0723 17.0730 8.0881 47.0170 31.0250 38.0168 23.0041
120 mm 13.0624 18.0797 9.0506 50.0000 32.0895 40.0984 24.0631
130 mm 14.0535 20.0000 10.0101 52.0632 34.0722 43.0478 26.0316
140 mm 15.0432 20.0833 10.0707 55.0556 35.0461 46.0296 27.0933
150 mm 16.0340 22.0222 11.0312 58.0824 37.0594 48.0544 29.0412
160 mm 17.0241 24.0272 11.0905 61.0728 40.0984 50.0505 31.0056
170 mm 18.0116 12.0500 64.0935 53.0191 32.0680
180 mm 19.0011 26.0882 13.0123 67.0568 55.0556 34.0247
190 mm 19.0920 13.0736 70.0423 58.0140 35.0971
200 mm 20.0833 29.0586 14.0327 73.0529 49.0020 60.0976 37.0594
220 mm 22.0624 15.0528 79.0365 65.0789 40.0650
240 mm 24.0510 16.0722 84.0746 71.0429 43.0860
250 mm 25.0381 17.0301 87.0719 74.0627 45.0455
260 mm 26.0316 17.0921 90.0909 76.0923 47.0170
280 mm 28.0090 19.0157 98.0039 81.0967 50.0505
300 mm 29.0940 20.0325 104.0167 87.0719 53.0763
320 mm 31.0646 92.0593 56.0818
340 mm 33.0557 98.0039 60.0241
360 mm 35.0211 104.0167 63.0291
380 mm 37.0037 108.0696 66.0667
400 mm 39.0063   113.0636 69.0444

 

Supplier of Automotive Fasteners , Aerospace, Construction, Railway and All type of Industrial Fasteners in Maharashtra

 

Common Types And Styles of nut bolt

Unified Inch Coarse and Fine Threads
Steel Bolts Size Threads per Inch
Frac. [No.] Decimal UNC UNF
1/8 [#6]0.13803240
5/32 [#8]0.16403236
3/16 [#10]0.19002432
1/40.25002028
5/160.31251824
3/80.37501624
7/160.43751420
1/20.50001320
9/160.56251218
5/80.62501118
3/40.75001016
7/80.8750914
11.0000812, 14
1 1/81.1250712
1 1/41.2500712
1 3/81.3750612
1 1/21.5000612
1 3/41.75005-

 

Railway Fasteners Din German Standard

  • Metric Form A Washers (DIN 125)
  • Metric Nyloc Hex Thin Nuts (DIN 985)
  • Metric Penny Washers
  • Metric Hex Thin Nuts (DIN 439)
  • Metric Hex Nuts (DIN 934)
  • Metric Flange Nuts (DIN 6923)
  • Metric Washers for Cheesehead (DIN 433)
  • Metric Form C Washers
  • Metric Square Nuts (DIN 557)
  • Metric Wing Nuts (DIN 315)
  • Metric Type M Washers
  • Metric Spring Wave Washers (DIN 137)
  • DIN 931 & 933 - For High Tensile Bolts.
  • Metric Spring Washers (DIN 7980)
  • Metric Dome Nuts (DIN 1587)
  • Metric Nyloc Hex Nuts (DIN 982)
  • Metric Shakeproof (int) Washers (DIN 6797)
  • DIN 934 - For High Tensile Nuts and other German Standards.
  • Metric DIN 9021 Washers
  • Metric Form B Washers (DIN 125/B)
  • Metric Dome Nyloc Nuts (DIN 986)
  • DIN 939– For High Tensile Studs.
  • Metric Lifting Eye Nuts (DIN 582)

 

Bolts And Nuts Tightening and Preload Torque Table

Fasteners Thread Tightening Torque (Nm) class Preload (Kn) Property Class/ Grade Coefficient of friction Min Breaking Torque
A2-70 (304) A1-50 (303) A2-70 (304) A4-80 (316) A4-80 (316) A1-50 (303) A1-50 (303) A1-70 (303) A4-80 (316)
M2.00 0.06 0.015 0.02 0.03 0.06 0.05 0.01 0.03 0.04 0.048
0.05 0.025 0.03 0.04 0.05 0.04 0.02
0.036 0.04 0.04 0.055 0.036 0.025 0.03
M6.00 6.085 2.08 5.09 8 6.085 3.02 0.01 9.03 13 15
5.054 4.01 8.08 11.08 5.054 2.059 0.02
4.049 4.08 10.04 13.09 4.049 2.009 0.03
M1.06 0.055 0.01 0.01 0.02 0.055 0.04 0.01 0.015 0.02 0.024
0.035 0.01 0.02 0.035 0.035 0.03 0.02
0.03 0.02 0.025 0.045 0.03 0.02 0.03
M3.00 1 0.085 1 1.03 1 0.09 0.01 1.01 1.06 1.08
0.065 1 1.01 1.06 0.065 0.06 0.02
0.045 1.025 1.035 1.085 0.045 0.04 0.03
M2.05 0.09 0.025 0.045 0.06 0.09 0.065 0.01 0.06 0.09 0.096
0.05 0.045 0.06 0.065 0.05 0.04 0.02
0.03 0.06 0.075 0.08 0.03 0.03 0.03
M5.00 4.085 1.06 3.04 4.06 4.085 2.026 0.01 5.05 7.08 8.08
3.093 2.04 5.01 6.09 3.093 1.083 0.02
3.019 2.08 6.01 8 3.019 1.049 0.03
M4.00 2.097 0.08 1.07 2.03 2.097 1.008 0.01 2.07 3.08 4.03
2.04 1.03 2.06 3.05 2.04 1.012 0.02
1.094 1.05 3 4.01 1.094 0.09 0.03
M8.00 12.06 6.08 14.05 19.03 12.06 5.086 0.01 23 32 37
10.02 10.01 21.04 28.07 10.02 4.075 0.02
8.085 11.09 25.05 33.09 8.085 3.085 0.03

 

Head Style of High Tensile Bolts

Head Style of High Tensile Bolts

 

Allowable Shear Stress Chart of Nut Bolt Washer

Type Fasteners Specification & Condition Shear Stress (ksi) Finish 0.2% Yield Stress (ksi) Dia (in.) Fasteners Min. Tensile Requirement
Threads in Shear Plane No Threads in Shear Plane Tensile Strength (ksi)
302
304
316		 Condition A (Annealed) in ASTM A276-71 12.6 Cold Finished Fasteners 45 18 90
302
304
316		 Condition A (Annealed) in ASTM A276-71
Class 1 (solution treated) in ASTM A193-71		 10.5 Hot Finished Fasteners 30 all 15 75
302
304
316		 Condition B (cold-worked) in ASTM A276-71
Class 2 (solution treated and strain hardened) in ASTM A193-71*		 17.5 Cold Finished Fasteners 100 25 125

 

Screws And Bolts Conversion Table of Us To Metric

US
(inches)
Metric
(millimeters)
US
(inches)
Metric
(millimeters)
1/16
1.06
1-1/2
38
1/8
3.02
1-5/8
41
3/16
4.08
1-3/4
45
1/4
6.04
1-7/8
48
5/16
7.09
2
51
3/8
9.05
2-1/4
57
7/16
11
2-1/2
64
1/2
13
2-3/4
70
9/16
14
3
76
5/8
16
3-1/4
83
11/16
17
3-1/2
89
3/4
19
3-3/4
95
13/16
21
4
102
7/8
22
4-1/2
114
15/16
24
5
127
1
25
5-1/2
140
1-1/8
29
6
152
1-1/4
32
6-1/2
165
1-3/8
35
7
178

 

Chemical Formula of Different Types Of Nuts And Bolts

CLASS TEMPERING TEMP. [C] C C S P B
MAX MIN MAX MAX MAX
8.8 Bolts 425 0.4 0.15 (D) 0.025 0.025 0.003
0.55 0.25 0.025 0.035

 

Mechanical Strength of High Tensile Fasteners

Grades PS [MPa] Size Range TS (min) [MPa] YS (min) [MPa] Hardness [Rockwell]
Class 8.8 Bolts 580 Under M16 800 640
600 17-72 830 660 C23–34

 

Aerospace Fasteners Industrial Uses

  • Aerospace
  • Chemical and Petrochemical
  • Waste Water
  • Power Industries (nuclear, natural gas, wind, solar)
  • Oil & Gas - upstream and downstream
  • Pipeline Engineering
  • Food Processing
  • Marine
  • Mechanical and Plant Engineering

 

Dimensions schedule of High Tensile Washers

DIA

M16

M27

M22

 M20

M24

 M36

M30

Tolerance for OD Minus(-)

1.06

1.09

HARDNESS FOR PL. WASHER

35 TO 45 HRC

Hardness for Hot Dip Galvd washer

26 HRC

Inner Dia (Min) d1

18

22

24

  

26

30

33

Thickness (S)

3.01 TO 4.06

Outer Dia (Max) d2

34

42

44

  

50

56

60

Tolerance for ID Plus(+)

0.043

0.052

0.062

To Din 6916 Hardened And Tempered Washers

DIA

M12

M16

M20

M22

M24

M27

M30

M36

Outer Dia (Max) d2

24

30

37

39

44

50

56

66

Tolerance for thickness + or –

0.030

0.060

Weight in Kgs for 100 nos

0.0703

1.046

1.096

2.043

3.006

5.002

6.032

11.050

Tolerance for OD Minus(-)

0.052

0.062

1

1.020

Thickness (S)

3

4

4

4

4

5

5

6

Inner Dia (Min) d1

13

17

21

23

25

28

31

37

Tolerance for ID Plus(+)

0.027

0.033

0.052

0.062