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Bolt Specification Table
The following is a table of bolt specifications, including metric bolt specifications and imperial bolt specification. Through this table, you can determine the maximum torque used by hydraulic wrenches through the size and strength of bolts and nuts. This table can also help you find suitable tools, such as bolt tensioners!
Metric bolt specification
| Bolt Specifications D | WidthAcrossFlats of Bolt Cap S | WidthAcrossFlats of Shrank J |
| M10*1.5 | 17 | 8 |
| M12*1.75 | 19 | 10 |
| M14*2 | 22 | 12 |
| M16*2 | 24 | 14 |
| M20*2.5 | 30 | 17 |
| M22*2.5 | 34 | 17 |
| M24*3 | 36 | 19 |
| M27*3 | 41 | 19 |
| M30*3.5 | 46 | 22 |
| M33*3.5 | 50 | 24 |
| M36*4 | 55 | 27 |
| M39*4 | 60 | 27 (30) |
| M42*4.5 | 65 | 32 |
| M45*4.5 | 70 | – |
| M48*5 | 75 | 36 |
| M52*5 | 80 | 36 |
| M56*5.5 | 85 | 41 |
| M60*5.5 | 90 | 46 |
| M64*6 | 95 | 46 |
| M68*6 | 100 | 50 |
| M72*6 | 105 | 55 |
| M76*6 | 110 | 60 |
| M80*6 | 115 | 65 |
| M85*6 | 120 | 70 |
| M90*6 | 130 | 70 (75) |
| M95*6 | 135 | – |
| M100*6 | 145 | 85 |
| M105*6 | 150 | – |
| M110*6 | 155 | – |
| M115*6 | 165 | – |
| M120*6 | 175 | – |
| M125 | 180 | – |
| M130 | 185 | – |
| M140 | 200 | – |
| M150 | 215 | – |
Imperial bolt specification
| Bolt Specifications D | WidthAcross Flats of Bolt Cap S | WidthAcross Flats of Shrank J |
| 5/8 | 1 1/16 | 1/2 |
| 3/4 | 1 1/4 | 5/8 |
| 7/8 | 1 7/16 | 3/4 |
| 1 | 1 5/8 | 3/4 |
| 1 1/8 | 1 13/16 | 7/8 |
| 1 1/4 | 2 | 7/8 |
| 1 3/8 | 2 3/16 | 1 |
| 1 1/2 | 2 3/8 | 1 |
| 1 5/8 | 2 9/16 | – |
| 1 3/4 | 2 3/4 | 1 1/4 |
| 1 7/8 | 2 15/16 | 1 3/8 |
| 2 | 3 | 1 1/2 |
| 2 | 3 1/8 | 1 5/8 |
| 2 1/4 | 3 3/8 | 1 3/4 |
| 2 1/4 | 3 1/2 | 1 3/4 |
| 2 1/2 | 3 3/4 | 1 3/4 |
| 2 1/2 | 3 7/8 | 1 7/8 |
| 2 3/4 | 4 1/8 | 2 |
| 2 3/4 | 4 1/4 | 2 |
| 3 | 4 5/8 | 2 1/4 |
| 3 1/4 | 5 | 2 1/4 |
Note：
The hexagonal dimensions listed in the above table are for reference only. The bolt dimensions should be checked in detail in certain working conditions.
According to the size and strength of bolts and nuts, determine the maximum torque for the spanner, and confirm the engineering manufacturer’s usage parameters when dealing with specific links.
When selecting a wrench, be sure to pay attention to the unmounting torque.
Heavy duty sleeves must conformISO2725/1301174/DIN3129/3121/ASME-B107.2/1995