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.
Table of Content
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.
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.
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 |
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
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 |
|
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 |
Dome Nuts
Hex Nuts
Lock Nuts
Wing Nuts
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 |
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.
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 |
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 | .2500 | 7/16 | .438 | .428 | .505 | .488 | 7/32 | .226 | .212 |
5/16 | .3125 | 1/2 | .500 | .489 | .577 | .557 | 17/64 | .273 | .258 |
3/8 | .3750 | 9/16 | .562 | .551 | .650 | .628 | 21/64 | .337 | .479 |
7/16 | .4375 | 11/16 | .688 | .675 | .794 | .768 | 3/8 | .385 | .365 |
1/2 | .5000 | 3/4 | .750 | .736 | .866 | .840 | 7/16 | .448 | .427 |
9/16 | .5625 | 7/8 | .875 | .861 | 1.010 | .982 | 31/64 | .496 | .473 |
5/8 | .6250 | 15/16 | .938 | .922 | 1.083 | 1.051 | 35/64 | .559 | .535 |
3/4 | .7500 | 1-1/8 | 1.125 | 1.088 | 1.299 | 1.240 | 41/64 | .665 | .617 |
7/8 | .8750 | 1-5/16 | 1.312 | 1.269 | 1.516 | 1.447 | 3/4 | .776 | .724 |
1 | 1.0000 | 1-1/2 | 1.500 | 1.450 | 1.732 | 1.653 | 55/64 | .887 | .831 |
1-1/8 | 1.1250 | 1-11/16 | 1.688 | 1.631 | 1.949 | 1.859 | 31/32 | .999 | .939 |
1-3/8 | 1.3750 | 2-1/16 | 2.062 | 1.994 | 2.382 | 2.273 | 1-11/64 | 1.206 | 1.138 |
1-1/2 | 1.500 | 2-1/4 | 2.250 | 2.175 | 2.598 | 2.480 | 1-9/32 | 1.ASTM A194 GR. 8 | 1.245 |
1-5/8 | 1.6250 | 2-7/16 | 2.438 | 2.356 | 2.815 | 2.686 | 1-25/64 | 1.429 | 1.353 |
1-3/4 | 1.7500 | 2-5/8 | 2.625 | 2.538 | 3.031 | 2.893 | 1-1/2 | 1.540 | 1.460 |
2 | 2.0000 | 3 | 3.000 | 2.900 | 3.464 | 3.306 | 1-23/32 | 1.763 | 1.675 |
2-1/4 | 2.2500 | 3-3/8 | 3.375 | 3.263 | 3.897 | 3.719 | 1-15/16 | 1.986 | 1.890 |
2-1/2 | 2.5000 | 3-3/4 | 3.750 | 3.625 | 4.330 | 4.133 | 2-5/32 | 2.209 | 2.105 |
2-3/4 | 2.7500 | 4-1/8 | 4.125 | 3.988 | 4.763 | 4.546 | 2-3/8 | 2.431 | 2.319 |
Bolts Torque Specifications | |||||||
---|---|---|---|---|---|---|---|
Bolts Size, Inches or # | Threads, Per Inch | Standard Dry Torque in Inch-Pounds | |||||
Stainless Steel | Stainless Steel | ||||||
#2 | 56 | 2.5 | 2.6 | ||||
64 | 3.0 | 3.2 | |||||
#3 | 48 | 3.9 | 4.0 | ||||
56 | 4.4 | 4.6 | |||||
#4 | 40 | 5.2 | 5.5 | ||||
48 | 6.6 | 6.9 | |||||
#5 | 40 | 7.7 | 8.1 | ||||
44 | 9.4 | 9.8 | |||||
#6 | 32 | 9.6 | 10.1 | ||||
40 | 12.1 | 12.7 | |||||
#8 | 32 | 19.8 | 20.7 | ||||
36 | 22.0 | 23.0 | |||||
#10 | 24 | 22.8 | 23.8 | ||||
32 | 31.7 | 33.1 | |||||
Bolt Size, Inches or # | Threads, Per Inch | Standard Dry Torque in Inch-Pounds | |||||
Stainless Steel | Stainless Steel | ||||||
1/4 | 20 | 75.2 | 78.8 | ||||
28 | 94.0 | 99.0 | |||||
5/16 | 18 | 132 | 138 | ||||
24 | 142 | 147 | |||||
3/8 | 16 | 236 | 247 | ||||
24 | 259 | 271 | |||||
7/16 | 14 | 376 | 393 | ||||
20 | 400 | 418 | |||||
1/2 | 13 | 517 | 542 | ||||
20 | 541 | 565 | |||||
Bolt Size, Inches or # | Threads, Per Inch | Standard Dry Torque in Inch-Pounds | |||||
Stainless Steel | Stainless Steel | ||||||
9/16 | 12 | 682 | 713 | ||||
18 | 752 | 787 | |||||
5/8 | 11 | 1110 | 1160 | ||||
18 | 1244 | 1301 | |||||
3/4 | 10 | 1530 | 1582 | ||||
16 | 1490 | 1558 | |||||
7/8 | 9 | 2328 | 2430 | ||||
14 | 2318 | 2420 | |||||
1 | 8 | 3440 | 3595 | ||||
14 | 3110 | 3250 | |||||
Bolt Size, Inches or # | Threads, Per Inch | Standard Dry Torque in Foot-Pounds | |||||
Stainless Steel | Stainless Steel | ||||||
1 1/8 | 7 | 413 | 432 | ||||
12 | 390 | 408 | |||||
1 1/4 | 7 | 523 | 546 | ||||
12 | 480 | 504 | |||||
1 1/2 | 6 | 888 | 930 | ||||
12 | 703 | 732 |
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 | .2500 | 1/2 | .500 | .488 | .577 | .556 | 15/64 | .250 | .218 |
5/16 | .3125 | 9/16 | .562 | .546 | .650 | .622 | 19/64 | .314 | .280 |
3/8 | .3750 | 11/16 | .688 | .669 | .794 | .763 | 23/64 | .377 | .341 |
7/16 | .4375 | 3/4 | .750 | .728 | .866 | .830 | 27/64 | .441 | .403 |
1/2 | .5000 | 7/8 | .875 | .850 | 1.010 | .969 | 31/64 | .504 | .464 |
9/16 | .5625 | 15/16 | .938 | .909 | 1.083 | 1.037 | 35/64 | .568 | .526 |
5/8 | .6250 | 1-1/16 | 1.062 | 1.031 | 1.227 | 1.175 | 39/64 | .631 | .587 |
3/4 | .7500 | 1-1/4 | 1.250 | 1.212 | 1.443 | 1.382 | 47/64 | .758 | .710 |
7/8 | .8750 | 1-7/16 | 1.438 | 1.394 | 1.660 | 1.589 | 55/64 | .885 | .833 |
1 | 1.0000 | 1-5/8 | 1.325 | 1.575 | 1.876 | 1.796 | 63/64 | 1.012 | .956 |
1-1/8 | 1.1250 | 1-13/16 | 1.812 | 1.756 | 2.093 | 2.002 | 1-7/64 | 1.139 | 1.079 |
1-1/4 | 1.2500 | 2 | 2.000 | 1.938 | 2.309 | 2.209 | 1-7/32 | 1.251 | 1.187 |
1-3/8 | 1.3750 | 2-3/16 | 2.188 | 2.119 | 2.526 | 2.416 | 1-11/32 | 1.378 | 1.460 |
1-1/2 | 1.5000 | 2-3/8 | 2.375 | 2.300 | 2.742 | 2.622 | 1-15/32 | 1.505 | 1.433 |
1-5/8 | 1.6250 | 2-9/16 | 2.562 | 2.481 | 2.959 | 2.828 | 1-19/32 | 1.632 | 1.556 |
1-3/4 | 1.7500 | 2-3/4 | 2.750 | 2.662 | 3.175 | 3.035 | 1-23/32 | 1.759 | 1.679 |
2 | 2.0000 | 3-1/8 | 3.125 | 3.025 | 3.608 | 3.449 | 1-31/32 | 2.013 | 1.925 |
2-1/4 | 2.2500 | 3-1/2 | 3.500 | 3.388 | 4.041 | 3.862 | 2-13/64 | 2.251 | 2.155 |
2-1/2 | 2.5000 | 3-7/8 | 3.875 | 3.750 | 4.474 | 4.275 | 2-29/64 | 2.505 | 2.401 |
2-3/4 | 2.7500 | 4-1/4 | 4.250 | 4.112 | 4.907 | 4.688 | 2-45/64 | 2.759 | 2.647 |
3 | 3.0000 | 4-5/8 | 4.625 | 4.475 | 5.340 | 5.102 | 2-61/64 | 3.013 | 2.893 |
3-1/4 | 3.2500 | 5 | 5.000 | 4.838 | 5.774 | 5.515 | 3-3/16 | 3.252 | 3.124 |
3-1/2 | 3.5000 | 5-3/8 | 5.375 | 5.200 | 6.207 | 5.928 | 3-7/16 | 3.506 | 3.370 |
3-3/4 | 3.7500 | 5-3/4 | 5.750 | 5.562 | 6.640 | 6.341 | 3-11/16 | 3.670 | 3.616 |
4 | 4.0000 | 6-1/8 | 6.125 | 5.925 | 7.073 | 6.755 | 3-15/16 | 4.014 | 3.862 |
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. |
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.
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. | N/A | 500 Min. |
![]() | 5mm - 100mm | Class 10.9 Alloy steel, quenched and tempered | 940 | 830 | 1040 |
![]() | All sizes below 16mm | Class 8.8 Medium carbon steel, quenched and tempered | 640 | 580 | 800 |
16mm - 72mm | 660 | 600 | 830 | ||
![]() | 1.6mm - 100mm | Class 12.9 Alloy steel, quenched and tempered | 1100 | 970 | 1220 |
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
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 |
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 |
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.
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 |
Unified Inch Coarse and Fine Threads | |||
---|---|---|---|
Steel Bolts Size | Threads per Inch | ||
Frac. [No.] | Decimal | UNC | UNF |
1/8 [#6] | 0.1380 | 32 | 40 |
5/32 [#8] | 0.1640 | 32 | 36 |
3/16 [#10] | 0.1900 | 24 | 32 |
1/4 | 0.2500 | 20 | 28 |
5/16 | 0.3125 | 18 | 24 |
3/8 | 0.3750 | 16 | 24 |
7/16 | 0.4375 | 14 | 20 |
1/2 | 0.5000 | 13 | 20 |
9/16 | 0.5625 | 12 | 18 |
5/8 | 0.6250 | 11 | 18 |
3/4 | 0.7500 | 10 | 16 |
7/8 | 0.8750 | 9 | 14 |
1 | 1.0000 | 8 | 12, 14 |
1 1/8 | 1.1250 | 7 | 12 |
1 1/4 | 1.2500 | 7 | 12 |
1 3/8 | 1.3750 | 6 | 12 |
1 1/2 | 1.5000 | 6 | 12 |
1 3/4 | 1.7500 | 5 | - |
|
|
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 |
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 |
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 |
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 |
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 |
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 |
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 |