• +(91) 022-6659 5844
  • sales@jigneshsteel.com

Manufacturer of High Tensile Grade 4.8 Hex Head Bolt and Class 4.8 Stud Bolts in India

The specification for Iso Class 4.8 standard covers Grade 4.8 fasteners like Bolts/Screws/Studs. This type of fastener Class 4.8 Bolt could either have Coarse thread and fine pitch thread formation. The standard Class 4.8 Carbon Steel Bolt has been manufactured from Low or medium carbon Alloy Steel. These steel grades are comparatively cheaper and less strong. In a partially or fully annealed condition, the tensile strength of the Grade 4.8 Nuts is around 420 Mpa for low carbon steel and 500 Mpa for medium carbon steel, its core hardness in terms of Rockwell lies between B71 – 95. The surface hardness of the Grade 4.8 Mild Steel Bolt can be increased through carburizing.

Although low and medium carbon steels have a low tensile strength, they are ductile. Hence they are easy to shape and are used in applications which tends to make the most of the ductile feature of the alloy. For instance, the Class 4.8 Material is used in mechanical equipment’s, buildings, bridges, tunnels, high speed railways etc. The size range of the Grade 4.8 Screw in a fully or partially annealed condition is between M5 to M100. While the 4.8 Grade Steel Bolt is available in self finished colour, other finishes applied to the steel alloy in order to provide additive value in terms of enhancing the physical or mechanical properties like its corrosion resistance and strength. Using Zinc either in the form of hot dip galvanization or for plating with white/ blue /yellow passivation increases the corrosion resistance of the Grade 4.8 Bolts. Other finishes used on the Class 4.8 Screw include  blackened, nickel plated, cadmium plated and chromium plated.

4.8 Hex Bolt

4.8 Hex Bolt

Grade 4.8 Fasteners

Grade 4.8 Fasteners

Grade 4.8 Nuts

Grade 4.8 Nuts

Grade 4.8 Bolts

Grade 4.8 Bolts

Grade 4.8 Stud Bolts

Grade 4.8 Stud Bolts

Grade 4.8 Threaded Rod

Grade 4.8 Threaded Rod

Manufacturer and exporter of High Tensile 4.8 Bolts, Screws and washer in India, Medium Carbon Steel Grade 4.8 Studs, Flat Washer and Hsfg Bolts for high-pressure services

Grade 4.8 Bolt Specifications

Class 4.8 Fasteners Sizes
  • Cold Formed High Tensile 4.8 Grade Bolts: M2-M24
  • Hot Forged Hsfg Grade 4.8 Bolts: M24-M100
High Tensile 4.8 Grade Bolts Size Metric
  • Dia: M10 - M110
  • Length: 12 - 1200MM
Grade 4.8 Hex Bolts Size Inch
  • Dia: 1/2" - 4.0"
  • Length: 1/2" - 52"
Preferred Class 4.8 Nut Bolt Drawing Formats JPEG, PDF, CAD, STP, IGS
Standard

Manufacturer of Grade 4.8 Bolt as per IS, ANSI, ASTM, DIN, ISO, JIS, GB, ASME, BS, UNI, CSN, EU, IFI, PN, and all International Standards

  • ANSI B 18.2.4 2M
  • Polish PN
  • ANSI - American National Standards Institute
  • Indian IS
  • American ASME
  • German DIN
  • International ISO
  • GB/T5783, GB/T5782, GB5783
  • American SAE
  • European EU
  • Spanish CSN
  • British BS
  • Italian UNI
  • ANSI B 28.2.4 1M
Grade 4.8 Bolt Length 3 mm to 200 mm
Grade 4.8 Steel Bolts & Screws US Threads Unified National Coarse (UNC), BSF, UNJF, UNR, METRIC, UNK, UNJC, BSW, Unified national extra fine (UNEF), Unified national fine (UNF), Constant-pitch threads
Grade 4.8 Bolts Head drive Phillips/Slot, Phillips, Slotted, and Six-Lobe 4.8 screw, etc
Material Origin Grade 4.8 Bolt are Western European. Eastern origin possible on request.
Grade 4.8 Nut Bolt Surface Finish & Coating
  • Ptfe Coated Class 4.8 BoltsBlack oxide
  • Phosphate
  • Teflon
  • Xylon
  • Cadmium
  • Zinc Phosphate (yellow, blue, white, black)
  • Zinc Electro Plating (Hexavalent or Trivalent Chrome)
  • Hot Dip Galvanised (HDG)
  • ZAC (Zinc Alluminium Flake Coating)
  • Nickel plated
  • Plated zinc-nickel
  • Anodizing
  • Sherardized
  • Manganese Phosphate
  • Bright Zinc Plated (BZP)
Hsfg Grade 4.8 Fasteners types Bolts, Socket Screw, Pan Head Screw, T-Head Bolts, Hex Nut, Screws, Hex Domed Cap Nuts, Socket Head Cap Screw, Hex Coupling Nut, U Bolts, Sockets, Spring Washers, Allen Cap screw, Studs, Screw, J Bolts, Structural Bolts, Hex Set Screw, Marine Anchors, Hex Head Bolts, Anchor Bolt, Nut, Cap Screw, Wing Screw, Socket Hexagon Head Screw, Wing Screw, Eye Bolt, Stud Bolts, Mushroom Head Square Neck Bolts, Hexagon Nut, Nuts, Washers, Square Nut, Anchors, Foundation Bolts, Studs, Machine Screw
Why Jignesh Steel?
  • An Indian 4.8 bolt manufacturer, established in Year 2008
  • Wide International network : Middle East, Western Europe, Eastern Europe, Southeast Asia, North and South America
  • Best Price in India compared to Grade 4.8 Bolt manufacturers in China
  • Always final Inspection of 4.8 bolting material before shipment
  • Pre-production En 15048 Grade 4.8 Fasteners sample before mass production
MOQ 5 pieces
Ask for Test Certificates from Grade 4.8 Bolt manufacturers
  • Manufacturer Test Certificate (MTC) as per EN 10204 / 3.1,
  • High Tensile 4.8 Grade Bolts Tensile testing to ISO 898-1
  • Hardness testing to ISO 6508-1
  • Suitability for preloading to EN 14399-2
  • Tri-Roll Thread Comparators
  • Hsfg Grade 4.8 Bolts Charpy Impact testing in accordance with ISO 148-1
  • Suitability test for calibrated preload to EN 14399-10
  • Nut proof load testing to ISO 898-2
  • Calibrated gauges and tools
Free Samples Yes
Delivery time Regular supply schedule is about 7-15 days
Payment Terms T/T, Western Union, Paypal, L/C or Trade Assurance 30% deposit & balance before shipping
Find our dealers & distributors of Grade 4.8 Bolt Shah Alam, Sharjah, Ernakulam, Vapi, Hyderabad, Nashik, India, Mumbai, Panipat, Indore, Chennai, Navi Mumbai, Jakarta, Patna, Sydney, Noida, Istanbul, Rajkot, Dubai, Doha, Houston, Muscat, Ranchi, Kuala Lumpur, Dammam, Pune, Ludhiana, Perth, Howrah, Jaipur, London, Gurgaon, Vadodara, Jamshedpur, Seoul, Thane, Coimbatore, Bogota, Montreal, Kochi, New Delhi, Manama, Courbevoie, Lucknow, Gimhae-si, Port-of-Spain Khobar, Abu Dhabi, Singapore, Mexico, Brisbane, Ankara, Tau, Baroda, Gujarat, Riyadh, Surat, Tehran, Mysuru, Kolkata, Thiruvananthapuram, Bhubaneswar, Kanpur, Bangalore, Ahvaz, Lagos, Bengaluru, Agra, Melbourne, Kuwait, Janeiro, Vung Granada, Pimpri-Chinchwad, Karachi, Calgary, Caracas, Dhaka, Santiago, Ahmedabad, Nagpur
Grade 4.8 Steel Fasteners Application and Uses Industrial, Wind tower, Railway, Nuclear power, Construction, Electronic, and Automotive industry
Port of Dispatch Mumbai or Kalamboli ports in Maharashtra state of India
ISO - International Organization for Standardization

Class 4.8 Hex Bolts Dimensions

Class 4.8 Heavy Hex Bolts Dimensions

 Heavy Hex Bolt Diameter  D  F  C  H
 Body Diameter    Width Across Flats   Width Across Corners   Height
 Max  Basic   Max        Min         Max  Min  Basic  Max       Min      
1/2 0.515 7/8 0.875 0.850 1.010 0.969 11/32 0.364 0.302
5/8 0.642 1-1/16 1.062 1.031 1.227 1.175 27/64 0.444 0.378
3/4 0.768 1-1/4 1.250 1.212 1.443 1.383 1/2 0.524 0.455
7/8 0.895 1-7/16 1.438 1.394 1.660 1.589 37/64 0.604 0.531
1 1.022 1-5/8 1.625 1.575 1.876 1.796 43/64 0.700 0.591
1-1/8 1.149 1-13/16 1.812 1.756 2.093 2.002 3/4 0.780 0.658
1-1/4 1.277 2 2.00 1.938 2.309 2.209 27/32 0.876 0.749
1-3/8 1.404 2-3/16 2.188 2.119 2.526 2.416 29/32 0.940 0.810
1-1/2 1.531 2-3/8 2.375 2.300 2.742 2.622 1 1.036 0.902
1-3/4 1.785 2-3/4 2.750 2.662 3.175 3.035 1-5/32 1.196 1.054
2 2.039 3-1/8 3.125 3.025 3.608 3.449 1-11/32 1.388 1.175
2-1/4 2.305 3-1/2 3.500 3.388 4.041 3.862 1-1/2 1.548 1.327
2-1/2 2.559 3-7/8 3.875 3.750 4.474 4.275 1-21/32 1.708 1.479

High Tensile 4.8 Grade Hex Nuts Dimensions

Hsfg Grade 4.8 Heavy Hex Nut Dimensions in mm

ISO Class 4.8 Hex Nut NB Across Corners MAX Thickness MIN Thickness MAX Across Flats MIN Across Flats
M 8 14.38 6.8 6.44 13 12.73
M 10 17.77 8.4 8.04 16 15.73
M 12 20.03 10.8 10.37 18 17.73
M 14 23.35 12.8 12.1 21 20.67
M 16 26.75 14.8 14.1 24 23.67
M 18 29.56 15.8 15.1 27 26.16
M 20 32.95 18 16.9 30 29.16
M 22 37.29 19.4 18.1 34 33
M 24 39.55 21.5 20.2 36 35
M 27 45.2 23.8 22.5 41 40
M 30 50.85 26.6 24.3 46 45
M 33 55.37 28.7 27.4 50 49
M 36 60.79 31 29.4 55 53.8
M 39 66.44 33.4 31.8 60 58.8
M 42 71.3 34 32.4 65 63.1
M 45 76.95 36 34.4 70 68.1
M 48 82.6 38 39.4 75 73.1
M 52 88.25 42 40.4 80 78.1
M 56 93.56 45 43.4 85 82.8
M 60 99.21 48 46.4 90 87.8
M 64 104.86 51 49.1 95 92.8
M 68 110.51 54 52.1 100 97.8
M 72 x 6 116.16 58 56.1 105 102.8
M 76 x 6 121.81 61 59.1 110 107.8
M 80 x 6 127.46 64 62.1 115 112.8

Hsfg Grade 4.8 Flat Washer Dimensions

ISO 7089 Class 4.8 Flat Washer dimensions in mm

Hsfg Grade 4.8 Flat Washer Dimensions

High Tensile 4.8 Grade Bolt Size USS SAE
OD (in.) ID (in.) Thickness OD (in.) ID (in.) Thickness
1/8 (#6) - - - 0.375 0.156 .036/.065
5/32 (#8) - - - 0.438 0.188 .036/.065
3/16 (#10) 0.560 0.250 .036/.065 0.500 0.220 .036/.065
7/32 (#12) - - - 0.562 0.250 .051/.080
1/4 (#14) 0.734 0.312 .051/.080 0.625 0.281 .051/.080
5/16 0.875 0.375 .064/.104 0.688 0.344 .051/.080
3/8 1.000 0.438 .064/.104 0.812 0.406 .051/.080
7/16 1.250 0.500 .064/.104 0.922 0.469 .051/.080
1/2 1.375 0.562 .086/.132 1.062 0.531 .074/.121
9/16 1.469 0.625 .086/.132 1.156 0.594 .074/.121
5/8 1.750 0.688 .108/.160 1.312 0.656 .074/.121
3/4 2.000 0.812 .122/.177 1.469 0.812 .108/.160
7/8 2.250 0.938 .136/.192 1.750 0.938 .108/.160
1 2.500 1.062 .136/.192 2.000 1.062 .108/.160
1 1/8 2.750 1.250 .136/.192 2.250 1.250 .108/.160
1 1/4 3.000 1.375 .136/.192 2.500 1.375 .136/.192
1 3/8 3.250 1.500 .153/.213 2.750 1.500 .136/.213
1 1/2 3.500 1.625 .153/.213 3.000 1.625 .153/.213
1 5/8 3.750 1.750 .153/.213 - - -
1 3/4 4.000 1.875 .153/.213 - - -
1 7/8 4.250 2.000 .153/.213 - - -
2 4.500 2.125 .153/.213 - - -
2 1/4 4.750 2.375 .193/.248 - - -
2 1/2 5.000 2.625 .210/.280 - - -
2 3/4 5.250 2.875 .228/.310 - - -
3 5.500 3.125 .249/.327 - - -

Grade 4.8 Steel Socket Head Cap Screw Dimensions

American National Standard ANSI/ASME B18.3.1M Class 4.8 Socket Head Cap Screws

Grade 4.8 Steel Socket Head Cap Screw Dimensions

High Tensile 4.8 Grade Screw Nom. Size Thread Pitch Body
Diameter
D
Head
Diameter
A
Head
Height
H
Chamfer
or
Radius
S
Hexagon
Socket
Size
J
Spline
Socket
Sizea
M
Key
Engagement
T
Transition
Dia.
B
Max Min Max Min Max Min Max Nom. Nom. Min Max
M1.6 × 0.35 1.60 1.46 3.00 2.87 1.60 1.52 0.16 1.5 1.829 0.80 2.0
M2 × 0.4 2.00 1.86 3.80 3.65 2.00 1.91 0.20 1.5 1.829 1.00 2.6
M2.5 × 0.45 2.50 2.36 4.50 4.33 2.50 2.40 0.25 2.0 2.438 1.25 3.1
M3 × 0.5 3.00 2.86 5.50 5.32 3.00 2.89 0.30 2.5 2.819 1.50 3.6
M4 × 0.7 4.00 3.82 7.00 6.80 4.00 3.88 0.40 3.0 3.378 2.00 4.7
M5 × 0.8 5.00 4.82 8.50 8.27 5.00 4.86 0.50 4.0 4.648 2.50 5.7
M6 × 1 6.00 5.82 10.00 9.74 6.00 5.85 0.60 5.0 5.486 3.00 6.8
M8 × 1.25 8.00 7.78 13.00 12.70 8.00 7.83 0.80 6.0 7.391 4.00 9.2
M10 × 1.5 10.00 9.78 16.00 15.67 10.00 9.81 1.00 8.0 5.00 11.2
M12 × 1.75 12.00 11.73 18.00 17.63 12.00 11.79 1.20 10.0 6.00 14.2
M14 × 2b 14.00 13.73 21.00 20.60 14.00 13.77 1.40 12.0 7.00 16.2
M16 × 2 16.00 15.73 24.00 23.58 16.00 15.76 1.60 14.0 8.00 18.2
M20 × 2.5 20.00 19.67 30.00 29.53 20.00 19.73 2.00 17.0 10.00 22.4
M24 × 3 24.00 23.67 36.00 35.48 24.00 23.70 2.40 19.0 12.00 26.4
M30 × 3.5 30.00 29.67 45.00 44.42 30.00 29.67 3.00 22.0 15.00 33.4
M36 × 4 36.00 35.61 54.00 53.37 36.00 35.64 3.60 27.0 18.00 39.4
M42 × 4.5 42.00 41.61 63.00 62.31 42.00 41.61 4.20 32.0 21.00 45.6
M48 × 5 48.00 47.61 72.00 71.27 48.00 47.58 4.80 36.0 24.00 52.6

Common types of Grade 4.8 Bolts

High Tensile 4.8 Grade Eye Bolt

High Tensile 4.8 Grade Eye Bolt

Hsfg Grade 4.8 Hex Bolt

Hsfg Grade 4.8 Hex Bolt

Grade 4.8 Steel Heavy Hex Bolt

Grade 4.8 Steel Heavy Hex Bolt

Class 4.8 U Bolt

Class 4.8 U Bolt

4.8 Galvanised Carriage Bolt

4.8 Galvanised Carriage Bolt

BS 4190 grade 4.8 Galvanized Bolt

BS 4190 grade 4.8 Galvanized Bolt

4.8 High Tensile Hot Dip Galvanized Bolts

4.8 High Tensile Hot Dip Galvanized Bolts

Class 4.8 M16 Bolt

Class 4.8 M16 Bolt

En 15048 Grade 4.8 Hex Head Bolt

En 15048 Grade 4.8 Hex Head Bolt

High Tensile 4.8 Grade M8 Bolt

High Tensile 4.8 Grade M8 Bolt

Hsfg Grade 4.8 M10 Bolt

Hsfg Grade 4.8 M10 Bolt

Grade 4.8 Steel Square Head T Bolt

Grade 4.8 Steel Square Head T Bolt

En 15048 Grade 4.8 Oval Head Bolt

En 15048 Grade 4.8 Oval Head Bolt

Full Thread 4.8 Galvanised Hex Bolt

Full Thread 4.8 Galvanised Hex Bolt

BS 4190 grade 4.8 Hexagon Bolt

BS 4190 grade 4.8 Hexagon Bolt

4.8 High Tensile Flange Bolt

4.8 High Tensile Flange Bolt

Class 4.8 Plow Bolt

Class 4.8 Plow Bolt

High Tensile 4.8 Grade Lag Bolt

High Tensile 4.8 Grade Lag Bolt

Hsfg Grade 4.8 Structural Hex Bolts

Hsfg Grade 4.8 Structural Hex Bolts

Grade 4.8 Steel Cup Head Bolt

Grade 4.8 Steel Cup Head Bolt

En 15048 Grade 4.8 Allen Bolt

En 15048 Grade 4.8 Allen Bolt

4.8 Galvanised CSK Bolt

4.8 Galvanised CSK Bolt

Grade 4.8 Nuts Types

Class 4.8 Lock Nut

Class 4.8 Lock Nut

High Tensile 4.8 Grade Hex Nut

High Tensile 4.8 Grade Hex Nut

Hsfg Grade 4.8 Weld Nut

Hsfg Grade 4.8 Weld Nut

Grade 4.8 Steel Pinion Nut

Grade 4.8 Steel Pinion Nut

En 15048 Grade 4.8 Heavy Hex Nut

En 15048 Grade 4.8 Heavy Hex Nut

4.8 Galvanised Slotted Flange Nut

4.8 Galvanised Slotted Flange Nut

BS 4190 grade 4.8 M10 Hexagon Nut

BS 4190 grade 4.8 M10 Hexagon Nut

Fine Thread 4.8 High Tensile Hex Nut

Fine Thread 4.8 High Tensile Hex Nut

Various types of Grade 4.8 Stud Bolt

Class 4.8 Stud Bolt

Class 4.8 Stud Bolt

High Tensile 4.8 Grade Threaded Rod

High Tensile 4.8 Grade Threaded Rod

Hsfg Grade 4.8 Studs

Hsfg Grade 4.8 Studs

Grade 4.8 Steel Stud Bar

Grade 4.8 Steel Stud Bar

En 15048 Grade 4.8 Weld Studs

En 15048 Grade 4.8 Weld Studs

4.8 Galvanised Fully Threaded Studs

4.8 Galvanised Fully Threaded Studs

BS 4190 grade 4.8 Double End Studs

BS 4190 grade 4.8 Double End Studs

4.8 High Tensile Partially Threaded Studs

4.8 High Tensile Partially Threaded Studs

Grade 4.8 Screws Types

Class 4.8 Hex Screw

Class 4.8 Hex Screw

High Tensile 4.8 Grade Lag Screw

High Tensile 4.8 Grade Lag Screw

Hsfg Grade 4.8 Socket Head Cap Screw

Hsfg Grade 4.8 Socket Head Cap Screw

Grade 4.8 Steel Machine Screw

Grade 4.8 Steel Machine Screw

En 15048 Grade 4.8 Set Screw

En 15048 Grade 4.8 Set Screw

4.8 Galvanised Coach Screw

4.8 Galvanised Coach Screw

BS 4190 grade 4.8 Grub Screw

BS 4190 grade 4.8 Grub Screw

4.8 High Tensile Cap Screw

4.8 High Tensile Cap Screw

Class 4.8 Hex Head Screw

Class 4.8 Hex Head Screw

High Tensile 4.8 Grade Hexagon Head Screw

High Tensile 4.8 Grade Hexagon Head Screw

Hsfg Grade 4.8 Screw Hex Flange

Hsfg Grade 4.8 Screw Hex Flange

Grade 4.8 Steel Square Head Screw

Grade 4.8 Steel Square Head Screw

Most famous types of Grade 4.8 Washers

Class 4.8 Flat Washer

Class 4.8 Flat Washer

High Tensile 4.8 Grade Fender Washer

High Tensile 4.8 Grade Fender Washer

Hsfg Grade 4.8 Curved Spring Washer

Hsfg Grade 4.8 Curved Spring Washer

Grade 4.8 Steel Split Lock Washer

Grade 4.8 Steel Split Lock Washer

En 15048 Grade 4.8 Square Washer

En 15048 Grade 4.8 Square Washer

4.8 Galvanised Star Washer

4.8 Galvanised Star Washer

BS 4190 grade 4.8 Tooth Lock Washer

BS 4190 grade 4.8 Tooth Lock Washer

4.8 High Tensile Wave Spring Washer

4.8 High Tensile Wave Spring Washer

High Tensile 4.8 Grade Nuts Sizes

Grade 4.8 Steel Finished Hex Nuts sizes as per ANSI/ASME B18.2.2

High Tensile 4.8 Grade Nuts Sizes

Nominal or Basic Major Diameter of Nut Thread

Class 4.8 Nuts Width Across Flats (F)

Width Across Corners (G) Thickness of High Tensile 4.8 Grade Hex Nuts (H) 
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 .320
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
1-1/4 1.2500 1-7/8 1.875 1.812 2.165 2.066 1-1/16 1.094 1.030
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 1.5000 2-1/4 2.250 2.175 2.598 2.480 1-9/32 1.317 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 2.000 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 4.456 2-3/8 2.431 2.319
3 3.000 4-1/2 4.500 4.350 5.196 4.959 2-19/32 2.654 2.534

Hsfg Grade 4.8 Screws Sizes

Grade 4.8 Steel Screw Size Body Dia Hex Key Size Head Height Head Dia Maximum Thread Length Minimum Thread Length
No. 0 0.06 0.05 0.06 0.096 5/8 3/8
No. 1 0.073 1/16 0.073 0.118 7/8 3/8
No. 2 0.086 5/64 0.086 0.14 7/8 1/2
No. 3 0.099 5/64 0.099 0.161 7/8 1/2
No. 4 0.112 3/32 0.112 0.183 11/8 11/16
No. 5 0.125 3/32 0.125 0.205 1 11/16
No. 6 0.138 7/64 0.138 0.226 11/8 11/16
No. 8 0.164 9/64 0.164 0.27 11/4 3/4
No. 10 0.19 5/32 0.19 0.312 13/8 15/16
No. 12 0.216 5/32 0.216 0.345 11/4 15/16
1/4 0.250 3/16 1/4 3/8 11/2 15/16
5/16 0.3125 1/4 5/16 15/32 1-3/4 1-1/16
3/8 0.375 5/16 3/8 9/16 2 1-3/16
7/16 0.438 3/8 7/16 21/32 2-1/4 13/16
1/2 0.500 3/8 1/2 3/4 2-1/2 1-3/8
9/16 0.5625 7/16 9/16 27/32 2-7/16 1-5/8
5/8 0.625 1/2 5/8 15/16 3 1-5/8
3/4 0.750 5/8 3/4 11/8 3-1/2 1-7/8
7/8 0.875 3/4 7/8 15/16 3-3/4 2-1/16
1 1.000 3/4 1 11/2 4-1/2 2-1/4
1-1/8 1.125 7/8 1-1/8 111/16 4-21/32 2-13/16
1-1/4 1.250 7/8 1-1/4 17/8 5-3/32 3-1/8
1-1/2 1.500 1 1-1/2 21/4 6-5/64 3-3/4
1-3/4 1.750 11/4 1-3/4 25/8 7-1/8 4-3/8
2 2.000 11/2 2 3 8-7/64 5

Class 4.8 Bolt Torque Chart

Maximum Pre-load (N) Property class to ISO898/1 Maximum Tightening Torque (Ncm) Property class to ISO898/1
Thread Coeff of friction 4.8 4.8 Conv factor
M1.6 0.1 250 6.5 0.026
0.125 240 7.5 0.031
0.14 230 8 0.034
M1.8 0.1 295 8 0.027
0.125 280 9.5 0.033
0.14 275 10 0.036
M2.0 0.1 420 13.5 0.032
0.125 400 15.5 0.039
0.14 385 16.5 0.043
M2.5 0.1 700 28 0.04
0.125 665 32 0.048
0.14 645 34 0.053
M3.0 0.1 1070 49 0.046
0.125 1020 56 0.055
0.14 985 60 0.061
M3.5 0.1 1430 75 0.052
0.125 1360 86 0.063
0.14 1320 92 0.07
M4.0 0.1 1850 112 0.06
0.125 1760 128 0.073
0.14 1710 137 0.08
M5.0 0.1 3020 220 0.072
0.125 2880 250 0.087
0.14 2790 270 0.096

Maximum Pre-load (N) Property class to ISO898/1 Maximum Tightening Torque (Nm) Property class to ISO898/1
Thread Coeff of friction 4.8 4.8 Conv factor
M6 0.1 4270 3.8 0.00087
0.125 4060 4.3 0.00106
0.14 3940 4.6 0.00117
M8 0.1 7830 9.1 0.00115
0.125 7460 10.5 0.0014
0.14 7230 11 0.00145
M10 0.1 12450 18 0.00175
0.125 11850 21 0.00195
0.14 11500 22 0.00175
M12 0.1 18150 31 0.0021
0.125 17300 36 0.0023
0.14 16800 39 0.002
M14 0.1 24900 50 0.0024
0.125 23800 58 0.0027
0.14 23100 62 0.0022
M16 0.1 34300 76 0.0027
0.125 32700 88 0.003
0.14 31700 95 0.0025
M18 0.1 41700 105 0.003
0.125 39700 121 0.0034
0.14 38600 130 0.0028
M20 0.1 53500 148 0.0033
0.125 5110 170 0.0037
0.14 49600 184 0.0033

Maximum Pre-load (N) Property class to ISO898/1 Maximum Tightening Torque (Nm) Property class to ISO898/1
Thread Coeff of friction 4.8 4.8 Conv factor
M22 0.1 66800 199 0.0036
0.125 63800 230 0.004
0.14 62000 250 0.0033
M24 0.1 77100 255 0.004
0.125 73600 295 0.0044
0.14 71400 315 0.0037
M27 0.1 101500 375 0.0045
0.125 96800 435 0.005
0.14 94100 470 0.0041
M30 0.1 123500 510 0.005
0.125 117500 590 0.0055
0.14 114500 635 0.0045
M33 0.1 153500 690 0.0055
0.125 146500 800 0.006
0.14 142500 865 0.0049
M36 0.1 180000 885 0.006
0.125 172000 1030 0.0066
0.14 167500 1111 0.0053
M39 0.1 217000 1150 0.0053
0.125 207000 1340 0.0065
0.14 201000 1440 0.0072

Grade 4.8 Steel Washer Sizes

Class 4.8 SAE Flat Washers
Size Inside Diameter Outside Diameter Thickness
#2 3/32" 1/4" .020"
#4 1/8" 5/16" 1/32"
#6 5/32" 3/8" 3/64"
#8 3/16" 7/16" 3/64"
#10 7/32" 1/2" 3/64"
1/4 9/32" 5/8" 1/16"
5/16 11/32" 11/16" 1/16"
3/8 13/32" 13/16" 1/16"
7/16 15/32" 59/64" 1/16"
1/2 17/32" 1-1/16" 3/32"
9/16 19/32" 1-3/16" 3/32"
5/8 21/32" 1-5/16" 3/32"
3/4 13/16" 1-1/2" 9/64"
7/8 15/16" 1-3/4" 9/64"
1" 1-1/16" 2" 9/64"
1-1/8 1-3/16" 2-1/4" 9/64"
1-1/4 1-5/16" 2-1/2" 5/32"
1-1/2 1-7/16" 3" 3/16"
1-5/8 1-3/4" 3-3/4" 3/16"
1-3/4 1-7/8" 4" 3/16"
2 2-1/8" 4-1/2" 3/16"

En 15048 Grade 4.8 Bolts Sizes

ASME B18.2.1 4.8 Galvanised Hex Head Bolt size (Inch Series)

En 15048 Grade 4.8 Bolts Sizes

Nominal or Basic Product Diameter E F G H J LT (Thread Length) Y
Body Diameter Width Across Flats Width Across Corners Head Height Wrenching Height For Screw Lengths For Screw Lengths Transition Thread Length
1/4 0.25 0.25 0.245 7/16 0.438 0.428 0.505 0.488 5/32 0.163 0.150 0.106 0.750 1.000 0.250
5/16 0.3125 0.3125 0.3065 1/2 0.500 0.489 0.577 0.557 13/64 0.211 0.195 0.140 0.875 1.125 0.278
3/8 0.375 0.375 0.369 9/16 0.562 0.551 0.650 0.628 15/64 0.243 0.226 0.160 1.000 1.250 0.312
7/16 0.4375 0.4375 0.4305 5/8 0.625 0.612 0.722 0.698 9/32 0.291 0.272 0.195 1.125 1.375 0.357
1/2 0.5 0.5 0.493 3/4 0.750 0.736 0.866 0.840 5/16 0.323 0.302 0.215 1.250 1.500 0.385
9/16 0.5625 0.5625 0.5545 13/16 0.812 0.798 0.938 0.910 23/64 0.371 0.348 0.250 1.375 1.625 0.417
5/8 0.625 0.625 0.617 15/16 0.938 0.922 1.083 1.051 25/64 0.403 0.378 0.269 1.500 1.750 0.455
3/4 0.75 0.75 0.741 1-1/8 1.125 1.100 1.299 1.254 15/32 0.483 0.455 0.324 1.750 2.000 0.500
7/8 0.875 0.875 0.866 1-5/16 1.312 1.285 1.516 1.465 35/64 0.563 0.531 0.378 2.000 2.250 0.556
1 1 1 0.99 1-1/2 1.500 1.469 1.732 1.675 39/64 0.627 0.591 0.416 2.250 2.500 0.625
1-1/8 1.125 1.125 1.114 1-11/16 1.688 1.631 1.949 1.859 11/16 0.718 0.658 0.461 2.500 2.750 0.714
1-1/4 1.25 1.25 1.239 1-7/8 1.875 1.812 2.165 2.066 25/32 0.813 0.749 0.530 2.750 3.000 0.714
1-1/2 1.5 1.5 1.488 2-1/4 2.250 2.175 2.598 2.480 15/16 0.974 0.902 0.640 3.250 3.500 0.833

Chemical Composition of Class 4.8 Hex Bolts

Strength grade/ class Material and heat treatment Chemical composition (analysis on the product) % Minimum hardening temperature °C
C P S B
min max max max max
Grade 4.8 Carbon steel 0,13 0,55 0,050 0,060 Not specified -

Mechanical Properties of High Tensile 4.8 Grade Nut Bolt

High Tensile Grade/ Class Material Proof strength Yield strength (min.) Tensile strength (min.) Core hardness (Rockwell)
Class 4.8 Low or medium carbon steel 310 Mpa 340 Mpa 420 Mpa B71-95

Grade 4.8 Bolt Price List

Products FOB Price US $
Plain zinc galvanizing grade 4.8 high tensile hex bolt and nut US $0.01/ Piece
Carbon Steel DIN933 4.8 Grade Full Thread Hex Bolt US $4.50-$5.00/ Kilogram
M11 grade 4.8 full thread bolt hex flange head bolt US $0.005-$0.02/ Piece
customized grade 4.8 metric Serrated flange Bolt and Nut US $0.01-$0.99/ Piece
High strength external six angle 4.8 grade bolt fasteners US $0.05/ Piece

Call us or send us an email to sales@jigneshsteel.com for more details. Always compare our price with other Grade 4.8 Bolt manufacturers in India or China