Grade 8.8 Bolt

Class 8.8 Hex Bolt Manufacturer in India, For Maximum Durability

High Tensile Grade 8.8 Bolts

8.8 Bolt

Class 8.8 Steel Bolts
Browsing for the Best and Reliable Grade 8.8 Bolt Manufacturer in India? Look no Further than KM Steel India Click Here to Contact
Table Of Content
- Grade 8.8 Bolt Specifications
- Types Of Class 8.8 Bolt
- Class 8.8 Nuts Size Chart
- 8.8 Stainless Steel Square Bolts Dimension Chart
- Metric Class 8.8 Nut Bolt Torque Chart
- Weight Chart Of Grade 8.8 Fasteners
- Grade 8.8 Bolt Shear Strength
- Conversion DIN To ISO Of High Tensile Class 8.8 Studs Bolts
- BS 3692 Grade 8.8 Bolts Metric ISO Coarse Thread
- Grade 8.8 Nut Mechanical Properties
- 8.8 Bolt Chemical Composition
- Quality And Test Reports of High Tensile Class 8.8 Studs Bolt
- Application Of Grade 8.8 Fasteners
- Class 8.8 vs 10.9 Bolts
- Din Standard For M20 Grade 8.8 Bolt
- Steel Class 8.8 Nuts Melting Point
- Delivery Timetable of High tensile 8.8 Grade Hex Bolts

Suppliers of ISO 898-1 Class 8.8 Bolts in Mumbai, Refer Specification
Grade 8.8 Bolt Specifications
Check Grade 8.8 Bolt Supplier in India who offers Custom Specification
![]()
- Imperial Sizes : M 20 to 100
- Metric Size : 3/4 to 3.1/2
- Length: 20mm – 380mm
![]()
- BSW
- UNF
- CBSF
- UN
![]()
- Rounded
- Sheared
- Flat or Saw Cut
- Chamfered
![]()
- Low Magnetic Permeability
- Resistance to Sulfidation
- Oxidation Resistance
![]()
- Threading
- Cold Drawn

- Coarse Threads
- Fine Threads
![]()
- Construction
- Automotive Industry
- Heavy Machinery
![]()
- USA, Dubai
- UAE, Abu Dhabi
- Oman, Saudi Arabia
![]()
- ASTM A574
- ASTM A574M
![]()
- Cold Forging
- Hot Forging
- CNC machined
![]()
- Corrugated Box
- Small Pack
- Carton
- Pallet
![]()
- Custom logo
- Material grade
- Heat number
- Specification
![]()
- Hardness Tests
- PMI Testing
- Flattening Tests
- Micro/Macro Tests
![]()
- HDFG OVS (Oversized)
- HDG (Hot dip galvanized)
- HDFG ISO (ISO Fit)
- Zinc Plated
Types Of Class 8.8 Bolt
Grade 8.8 Bolt Supplier in India offers a variety of the most popular types.

Class 8.8 Hex Bolt

Grade 8.8 Eye Bolt

8.8 Heavy Hex Bolt

High Tensile Class 8.8 U Bolt

8.8 Grade Anchor Bolts

BS 3692 Grade 8.8 Galvanized Bolts
Get 8.8 Hex Head Bolt Size Ranging From M2 through M100, Check Dimension
Premium Trusted Manufacturer of Grade 8.8 Bolt in India, At Resonable Cost.
Class 8.8 Nuts Size Chart

| Nominal Size Of D | m10 | m12 | m14 | m16 | m20 | m24 | m30 | m36 | |
|---|---|---|---|---|---|---|---|---|---|
| Diameter Of Body | D (max) | 10 | 12 | 14 | 16 | 20 | 24 | 30 | 36 |
| D (min) | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 | 23.67 | 29.67 | 35.61 | |
| Head Thickness | H (max) | 6.63 | 7.76 | 9.09 | 10.32 | 12.88 | 15.44 | 19.48 | 23.38 |
| H (min) | 6.17 | 4.24 | 8.51 | 9.68 | 12.12 | 14.56 | 17.92 | 21.63 | |
| Flats Acro | F (max) | 17 | 19 | 22 | 24 | 30 | 36 | 46 | 55 |
| F (min) | 15.73 | 17.73 | 20.67 | 23.67 | 29.16 | 35 | 45 | 53.8 | |
| Corners Acro | C (max) | 18.48 | 20.78 | 24.25 | 27.71 | 34.64 | 41.57 | 53.12 | 63.51 |
| C (min) | 17.77 | 20.03 | 23.35 | 26.75 | 32.95 | 39.55 | 50.85 | 60.79 | |
| Nominal Size Of D | m42 | m48 | m56 | m64 | m72 | m80 | m90 | m100 | |
| Diameter Of Body | D (max) | 42 | 48 | 56 | 64 | 72 | 80 | 90 | 90 |
| D (min) | 41.38 | 47.38 | 55.26 | 63.26 | 71.26 | 79.26 | 89.13 | 99.13 | |
| Head Thickness | H (max) | 26.97 | 31.07 | 36.2 | 41.32 | 46.45 | 51.58 | 57.74 | 63.9 |
| H (min) | 25.03 | 28.93 | 33.8 | 38.68 | 43.55 | 48.42 | 54.26 | 60.1 | |
| Flats Acro | F (max) | 65 | 75 | 85 | 95 | 105 | 115 | 130 | 145 |
| F (min) | 62.9 | 72.6 | 82.2 | 91.8 | 101.4 | 111 | 125.5 | 140 | |
| Corners Acro | C (max) | 75.06 | 86.6 | 98.15 | 109.7 | 121.24 | 132.72 | 150.11 | 167.43 |
| C (min) | 71.71 | 82.76 | 93.71 | 104.65 | 115.6 | 126.54 | 143.07 | 159.6 |
8.8 Stainless Steel Square Bolts Dimension Chart
View Grade 8.8 Bolt Stockist in India who provides appropriate Dimensions

| Size For Thread Dia | F | G | H | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Width Of Across Flats | Width Of Across Corners | Thickness Table | |||||||
| Max | Min | Basic | Min | Max | Max | Min | Basic | ||
| 1/4 | .2500 | .438 | .428 | 7/16 | .488 | .505 | .226 | .212 | 7/32 |
| 5/16 | .3125 | .500 | .489 | 1/2 | .557 | .577 | .273 | .258 | 17/64 |
| 9/16 | .5625 | .875 | .861 | 7/8 | .982 | 1.010 | .496 | .473 | 31/64 |
| 5/8 | .6250 | .938 | .922 | 15/16 | 1.051 | 1.083 | .559 | .535 | 35/64 |
| 3/4 | .7500 | 1.125 | 1.088 | 1-1/8 | 1.240 | 1.299 | .665 | .617 | 41/64 |
| 7/8 | .8750 | 1.312 | 1.269 | 1-5/16 | 1.447 | 1.516 | .776 | .724 | 3/4 |
| 3/8 | .3750 | .562 | .551 | 9/16 | .628 | .650 | .337 | .479 | 21/64 |
| 7/16 | .4375 | .688 | .675 | 11/16 | .768 | .794 | .385 | .365 | 3/8 |
| 1/2 | .5000 | .750 | .736 | 3/4 | .840 | .866 | .448 | .427 | 7/16 |
| 1 | 1.0000 | 1.500 | 1.450 | 1-1/2 | 1.653 | 1.732 | .887 | .831 | 55/64 |
| 1-1/8 | 1.1250 | 1.688 | 1.631 | 1-11/16 | 1.859 | 1.949 | .999 | .939 | 31/32 |
| 1-3/8 | 1.3750 | 2.062 | 1.994 | 2-1/16 | 2.273 | 2.382 | 1.206 | 1.138 | 1-11/64 |
| 2 | 2.0000 | 3.000 | 2.900 | 3 | 3.306 | 3.464 | 1.763 | 1.675 | 1-23/32 |
| 2-1/4 | 2.2500 | 3.375 | 3.263 | 3-3/8 | 3.719 | 3.897 | 1.986 | 1.890 | 1-15/16 |
| 1-1/2 | 1.500 | 2.250 | 2.175 | 2-1/4 | 2.480 | 2.598 | 1.ASTM A194 GR. 8 | 1.245 | 1-9/32 |
| 1-5/8 | 1.6250 | 2.438 | 2.356 | 2-7/16 | 2.686 | 2.815 | 1.429 | 1.353 | 1-25/64 |
| 1-3/4 | 1.7500 | 2.625 | 2.538 | 2-5/8 | 2.893 | 3.031 | 1.540 | 1.460 | 1-1/2 |
| 2-1/2 | 2.5000 | 3.750 | 3.625 | 3-3/4 | 4.133 | 4.330 | 2.209 | 2.105 | 2-5/32 |
| 2-3/4 | 2.7500 | 4.125 | 3.988 | 4-1/8 | 4.546 | 4.763 | 2.431 | 2.319 | 2-3/8 |
Metric Class 8.8 Nut Bolt Torque Chart
| Metric Course Pitch | M6 | M8 | M10 | M12 | (M14) | M16 | (M18) | M20 | (M22) | |
|---|---|---|---|---|---|---|---|---|---|---|
| Grade 8.8 Bolts | Nm | 8 | 20 | 40 | 70 | 112 | 175 | 241 | 341 | 464 |
| feet/lbs | 6 | 15 | 30 | 52 | 83 | 129 | 177 | 252 | 342 | |
| Metric Course Pitch | M24 | (M27) | M30 | (M33) | M36 | (M39) | M42 | (M45) | M48 | |
| Grade 8.8 Bolts | Nm | 590 | 863 | 1171 | 1594 | 2047 | 2649 | 3274 | 4072 | 4911 |
| feet/lbs | 435 | 636 | 864 | 1176 | 1510 | 1954 | 2415 | 3003 | 3622 | |
Weight Chart Of Grade 8.8 Fasteners
| Sizes | M2 | M2.5 | M3 | M3.5 | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weight per Metre | 0.0187 | 0.03 | 0.044 | 0.06 | 0.078 | 0.124 | 0.177 | 0.319 | 0.5 | 0.725 | 0.97 | 1.33 |
| Size (UNC) | ¼ | 5/16 | 3/8 | ½ | 9/16 | 5/8 | ||||||
| Weight per Meter | 0.194 | 0.323 | 0.469 | 0.896 | 1.096 | 1.342 | ||||||
| Sizes | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 |
| Weight per Metre | 1.65 | 2.08 | 2.54 | 3 | 3.85 | 4.75 | 5.9 | 6.9 | 8.2 | 9.4 | 11 | 12.4 |
| Size (UNC) | ¾ | 7/8 | 1 | 1 1/8 | 1 ¼ | 1 3/8 | 1 ½ | 1 5/8 | 1 ¾ | 1 7/8 | 2 | |
| Weight per Meter | 2.021 | 2.756 | 3.638 | 4.545 | 5.718 | 6.842 | 8.281 | 9.726 | 11.231 | 13.038 | 14.741 |
Grade 8.8 Bolt Shear Strength
| Dia of bolt | Tension Capacity | Shear Capacity | Bearing capacity in KN
(min of Pbb and Pbs) End Distance = 2 x bolt dia |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal 0.8 At Pt | Exact At Pt | Double Shear | Single Shear | ||||||||||||
| mm | Pnom | Pt | 2Ps | Ps | |||||||||||
| kN | kN | kN | kN | 8 | 20 | 5 | 6 | 7 | 10 | 15 | 9 | 12 | 30 | 25 | |
| 16 | 87.9 | 110 | 126 | 2.8 | 70.4 | 176 | 44.0 | 52.8 | 61.6 | 88.0 | 132 | 79.2 | 106 | 264 | 220 |
| 12 | 47.2 | 59.0 | 67.4 | 33.7 | 52.8 | 132 | 33.0 | 39.6 | 46.2 | 66.0 | 99.0 | 59.4 | 79.2 | 198 | 165 |
| 22 | 170 | 212 | 242 | 121 | 96.8 | 242 | 60.5 | 72.6 | 84.7 | 121 | 182 | 109 | 145 | 363 | 303 |
| 20 | 137 | 172 | 196 | 98.0 | 88.0 | 220 | 55.0 | 66.0 | 77.0 | 110 | 165 | 99.0 | 132 | 330 | 275 |
| 24 | 198 | 247 | 282 | 141 | 106 | 264 | 66.0 | 79.2 | 92.4 | 132 | 198 | 119 | 158 | 396 | 330 |
| 30 | 314 | 393 | 449 | 224 | 132 | 330 | 82.5 | 99.0 | 116 | 165 | 248 | 149 | 198 | 495 | 413 |
| 27 | 257 | 321 | 367 | 184 | 119 | 297 | 74.3 | 89.1 | 104 | 149 | 223 | 134 | 178 | 446 | 371 |
Conversion DIN To ISO Of High Tensile Class 8.8 Studs Bolts
| DIN | 1 | 7 | 84 | 85 | 94 | 125 | 125 | 126 | 417 | 427 | 433 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ISO | 2339 | 2338 | 1207 | 1508 | 1234 | 7089 | 7090 | 7091 | 7435 | 2342 | 7092 |
| DIN | 916 | 931 | 933 | 934 | 934 | 937 | 960 | 961 | 963 | 964 | 965 |
| ISO | 4029 | 4014 | 4017 | 4032 | 8673 | 7038 | 8765 | 8676 | 2009 | 2010 | 7046 |
| DIN | 1481 | 6325 | 6914 | 6915 | 6916 | 6921 | 6923 | 6924 | 6925 | 7343 | 7343 |
| ISO | 8752 | 8734 | 7412 | 7414 | 7416 | 8102 | 4161 | 7040 | 7042 | 8750 | 8751 |
| DIN | 438 | 439 | 439 | 440 | 551 | 553 | 555 | 558 | 580 | 601 | 603 |
| ISO | 7436 | 4035 | 4036 | 7094 | 4766 | 7434 | 4034 | 4018 | 3266 | 4016 | 8677 |
| DIN | 966 | 971-1 | 971-2 | 980 | 980 | 982 | 982 | 985 | 1434 | 1440 | 1444 |
| ISO | 7047 | 8673 | 8674 | 7042 | 10513 | 7040 | 10512 | 10511 | 2341 | 8738 | 2341 |
| DIN | 7344 | 7346 | 7971 | 7972 | 7973 | 7976 | 7977 | 7978 | 7979 | 7979 | 7981 |
| ISO | 8748 | 8749 | 1481 | 1482 | 1483 | 1479 | 8736 | 8737 | 8733 | 8735 | 7049 |
BS 3692 Grade 8.8 Bolts Metric ISO Coarse Thread
| Thread | Area of nominal stess(mm)2 | Proof stress (Rp0.2 N/mm²) | Pitch mm |
|---|---|---|---|
| M4 | 8.78 | 5.62 | 0.7 |
| M5 | 14.2 | 9.09 | 0.8 |
| M7 | 28.9 | 18.5 | 1 |
| M6 | 20.1 | 8.8 | 1 |
| M3.5 | 6.78 | 4.34 | 0.6 |
| M39 | 976 | 625 | 4 |
| M36 | 817 | 523 | 4 |
| M27 | 459 | 294 | 3 |
| M33 | 694 | 444 | 3.5 |
| M30 | 561 | 359 | 3.5 |
| M20 | 245 | 157 | 2.5 |
| M24 | 353 | 226 | 3 |
| M22 | 303 | 194 | 2.5 |
| M8 | 36.6 | 23.4 | 1.25 |
| M12 | 84.3 | 54 | 1.75 |
| M10 | 58 | 37.1 | 1.5 |
| M14 | 115 | 73.6 | 2 |
| M18 | 192 | 123 | 2.5 |
| M3 | 5.03 | 3.22 | 0.5 |
| M16 | 157 | 100 | 2 |
High Tensile Grade 8.8 Bolt have a tensile strength of about 800 MPa , Refer Properties
Grade 8.8 Nut Mechanical Properties
| Grades | Size Range | PS [MPa] | Grade 8.8 Bolt Tensile Strength (min) [MPa] | Grade 8.8 Bolt Yield Strength (min) [MPa] | 8.8 grade bolt hardness in hrc [Rockwell] |
|---|---|---|---|---|---|
| Class 8.8 | Under M16 | 580 | 640 | 800 | 22-32 HRC |
| 17-72 | 600 | 660 | 830 | C23-34 |
8.8 Bolt Chemical Composition
Grade 8.8 Bolt Manufacturer in India Provides Accurate Chemical Composition of Fasteners.
|
Carbon 0.55% max |
Sulfur (S) 0.04 (Max.) |
Phosphorus (P) 0.035% max |
Boron (B) 0.003 max |
Quality And Test Reports of High Tensile Class 8.8 Studs Bolt
- Raw Materials Certificate
- 100% Radiography Test
- Third Party Inspection
- EN 10204/3.1B
- Mill Test
Grade 8.8 Steel Hex Bolts Used for heavy-duty Applications
Application Of Grade 8.8 Fasteners

Class 8.8 vs 10.9 Bolts
- Tensile Strength : 800 N/mm²
- Yield Strength: 640 N/mm²
- Material: medium-carbon steel
- Elongation: 12%
- Hardness: 250HV
- Tensile Strength : 1040 N/mm²
- Yield Strength: 940 N/mm²
- Material: alloy steel
- Elongation: 9%
- Hardness: 385HV
Din Standard For M20 Grade 8.8 Bolt
- DIN 961
- DIN 7991
- DIN 931
- DIN 933
- DIN 960
- DIN 603
Steel Class 8.8 Nuts Melting Point
| Melting Point | Grade 8.8 Bolts |
|---|---|
| °F | 800 |
| °C | 1472 |
Delivery Timetable of High tensile 8.8 Grade Hex Bolts
| Country Name | Delivery Time |
|---|---|
| Egypt | 18 days |
| UAE/ Dubai | 5 days |
| Saudi Arabia | 7 days |
| South Africa | 25-30 days |
| Oman | 7 days |
| Jordan | 21 days |
| Thailand | 7 days |
| Malaysia | 10 days |
| Turkey | 21 days |
| Singapore | 8 days |
Why Choose KM Steel India ?
- ISO & PED Approved Manufacturer & Supplier for Fastening Products
- Importer and Exporter of Hex Bolts, Threaded Rod, Studs, Socket Head cap screws in Maharashtra.
- Top 5 Trader & Wholesaler of Set screws, Machine screws, Washers, Heavy Hex head bolt, Double Ended Studs in India, For Low and High Temperature Applications.
- Offer Inexpensive Rates to the local Distributor & Reseller Binondo, Saudi Arabia, Manila, Quezon city, South Africa, UAE, Sharjah, Philippines, Cebu, Penang.
- Stockist of Rivets, Hex Nuts, Lock Nuts, Bolts and Nuts Used in Various Industries and Applications For Fastening and Securing Purposes in Maharashtra.
