Certified Bolt Size Chart in MM to Inches
Steel Gems offers a top-quality, certified Bolt Size Chart in both millimeters and inches. This chart is designed to provide accurate and reliable information regarding bolt sizes, ensuring that customers can make informed decisions when selecting the appropriate bolts for their specific needs.
Our Bolt Size Chart has been thoroughly tested and certified to meet the highest industry standards, providing customers with the confidence and peace of mind they need when working with steel bolts. At Steel Gems, we are committed to delivering exceptional products and services to our valued customers, and our Bolt Size Chart is no exception.
Looking for Bolt Size Chart Mm To Inch? Check out our certified Bolt Size Chart Mm To Inch
Bolt Size Chart
| Size | Nominal (Major) | Coarse Thread (UNC) | Fine Thread (UNF) | ||||
| Diameter [in] | Threads Per Inch | Tensile Stress Area [in2] |
Minor Area [in2] | Threads Per Inch | Tensile Stress Area [in2] |
Minor Area [in2] | |
| #0 | 0.06 | --- | --- | --- | 80 | 0.0018 | 0.0015 |
| #2 | 0.086 | 56 | 0.0037 | 0.0031 | 64 | 0.0039 | 0.0034 |
| #4 | 0.112 | 40 | 0.006 | 0.005 | 48 | 0.0066 | 0.0057 |
| #5 | 0.125 | 40 | 0.008 | 0.0067 | 44 | 0.0083 | 0.0072 |
| #6 | 0.138 | 32 | 0.0091 | 0.0075 | 40 | 0.0102 | 0.0087 |
| #8 | 0.164 | 32 | 0.014 | 0.012 | 36 | 0.0147 | 0.0129 |
| #10 | 0.19 | 24 | 0.0175 | 0.0145 | 32 | 0.02 | 0.0175 |
| 1/4" | 0.25 | 20 | 0.0318 | 0.0269 | 28 | 0.0364 | 0.0326 |
| 5/16" | 0.3125 | 18 | 0.0524 | 0.0454 | 24 | 0.058 | 0.0524 |
| 3/8" | 0.375 | 16 | 0.0775 | 0.0678 | 24 | 0.0878 | 0.0809 |
| 7/16" | 0.4375 | 14 | 0.1063 | 0.0933 | 20 | 0.1187 | 0.109 |
| 1/2" | 0.5 | 13 | 0.1419 | 0.1257 | 20 | 0.1599 | 0.1486 |
| 9/16" | 0.5625 | 12 | 0.182 | 0.162 | 18 | 0.203 | 0.189 |
| 5/8" | 0.625 | 11 | 0.226 | 0.202 | 18 | 0.256 | 0.24 |
| 3/4" | 0.75 | 10 | 0.334 | 0.302 | 16 | 0.373 | 0.351 |
| 7/8" | 0.875 | 9 | 0.462 | 0.419 | 14 | 0.509 | 0.48 |
| 1" | 1 | 8 | 0.606 | 0.551 | 12 | 0.663 | 0.625 |
| 1-1/8" | 1.125 | 7 | 0.763 | 0.693 | 12 | 0.856 | 0.812 |
| 1-1/4" | 1.25 | 7 | 0.969 | 0.89 | 12 | 1.073 | 1.024 |
| 1-3/8" | 1.375 | 6 | 1.155 | 1.054 | 12 | 1.315 | 1.26 |
| 1-1/2" | 1.5 | 6 | 1.405 | 1.294 | 12 | 1.581 | 1.521 |
| 1-3/4" | 1.75 | 5 | 1.9 | 1.74 | --- | --- | --- |
| 2" | 2 | 4.5 | 2.5 | 2.3 | --- | --- | --- |
Metric Bolt Thread Size Chart in mm
| Nominal (Major) | Coarse Pitch | Fine Pitch | ||||
| Diameter [mm] | Pitch | Tensile Stress | Minor | Pitch | Tensile Stress | Minor |
| [mm] | Area [mm2] | Area [mm2] | [mm] | Area [mm2] | Area [mm2] | |
| 1.6 | 0.35 | 1.27 | 1.076 | --- | --- | --- |
| 2 | 0.4 | 2.073 | 1.789 | --- | --- | --- |
| 2.5 | 0.45 | 3.391 | 2.98 | --- | --- | --- |
| 3 | 0.5 | 5.031 | 4.473 | --- | --- | --- |
| 3.5 | 0.6 | 6.775 | 6 | --- | --- | --- |
| 4 | 0.7 | 8.779 | 7.75 | --- | --- | --- |
| 5 | 0.8 | 14.18 | 12.68 | --- | --- | --- |
| 6 | 1 | 20.12 | 17.89 | --- | --- | --- |
| 8 | 1.25 | 36.61 | 32.84 | 1 | 39.17 | 36.03 |
| 10 | 1.5 | 57.99 | 52.29 | 1.25 | 61.2 | 56.3 |
| 12 | 1.75 | 84.27 | 76.25 | 1.25 | 92.07 | 86.04 |
| 14 | 2 | 115.4 | 104.7 | 1.5 | 124.5 | 116.1 |
| 16 | 2 | 156.7 | 144.1 | 1.5 | 167.2 | 157.5 |
| 20 | 2.5 | 244.8 | 225.2 | 1.5 | 271.5 | 259 |
| 24 | 3 | 352.5 | 324.3 | 2 | 384.4 | 364.6 |
| 30 | 3.5 | 560.6 | 519 | 2 | 621.2 | 596 |
| 36 | 4 | 816.7 | 759.3 | 2 | 914.5 | 883.8 |
| 42 | 4.5 | 1121 | 1045 | 2 | 1264 | 1228 |
| 48 | 5 | 1473 | 1377 | 2 | 1671 | 1629 |
| 56 | 5.5 | 2030 | 1905 | 2 | 2301 | 2252 |
| 64 | 6 | 2676 | 2520 | 2 | 3031 | 2975 |
| 72 | 6 | 3460 | 3282 | 2 | 3862 | 3799 |
| 80 | 6 | 4344 | 4144 | 1.5 | 4851 | 4798 |
| 90 | 6 | 5591 | 5364 | 2 | 6099 | 6020 |
| 100 | 6 | 6995 | 6740 | 2 | 7562 | 7473 |
| 110 | --- | --- | --- | 2 | 9182 | 9084 |
Available Types Of Bolts
Steel Gems is a leading Bolt Supplier in Indian Cities
We are a leading Bolt Manufacturer. Monthly, we export two containers of top-notch Bolt to various Indian ports, catering to a diverse range of customers.
| Steel Gems is Leading Bolt Supplier in these cities | ||||
|---|---|---|---|---|
| Bangalore | Mumbai | Chennai | Hyderabad | Kolkata |
| New Delhi | Ahmedabad | Jaipur | Surat | Salem |
| Bhiwandi | Tiruppur | Sivakasi | Jamnagar | Pune |
| Bhubaneswar | Vijaywada | Firozabad | Noida | Rajkot |
| Panna | Raipur | Cochin | Ludhiana | Panipat |
| Peenya | Indore | Channapatna | Kharagpur | Nashik |
| Varanasi | Haldia | Rourkela | Bangalore | Moradabad |
| Visakhapatnam | Trivandrum | Pithampur | Dibrugarh | Angul |
| Coimbatore | Kannur | Nagpur | Vadodara | Rudrapur |
| Agra | Bhagalpur | Jamshedpur | Bhilai | Lucknow |
| Thane | Bhopal | Maharashtra | Vasai | Bikaner |
We are Top Bolt Exporter
Steel Gems has established a global presence, with regular Bolt purchases from more than 35 countries. In the past seven years alone, we have proudly supplied over 100+ tonnes of Bolts to various clients across the world.
| Steel Gems is leading Bolt Exporter in these Countries | |||
|---|---|---|---|
| USA | UK | Italy | Bangladesh |
| Turkey | Germany | Singapore | Spain |
| Hungary | Austria | Switzerland | Serbia |
| Finland | Norway | Luxembourg | Iceland |
| Ireland | Greece | Australia | France |
| Venezuela | Sweden | Moldova | New Zealand |