Power Transmission

Gear drives, bearings, motors, clutches, couplings, machine controls, sensors and components.

Wind Systems

Towers, turbines, gearboxes; processes for shaping and finishing component parts.

Chemical Engineering

The industry gateway for chemical engineering and plant operations.

Laser Focus World

Semiconductors, medical equipment, lasers, optics and aviation and aerospace.

more free magazines

Materials

Design

Processes

Units

Formulas

Math
Torque in the Bolts

Given the geometry and material properties of the bolt, this calculator computes the approximate required torque.

Input

Material Preperties of Bolts
Grade:
ASTM
A307
A325 Type 1
A325 Type 2
A325 Type 3
A354 BB
A354 BC
A354 BD
A449
A490 Type 1
A490 Type 3
 SAE
1
2
3
4
5
5.2
6
7
8
8.2
 Other
Socket Head Cap Screws
Geometry of Bolts
Size:
Major Diameter
(inch)
¼
5/16
3/8
7/16
½
9/16
5/8
11/16
¾
13/16
7/8
15/16
 1
11/16
11/8
13/16
11/4
15/16
1-3/8
17/16
11/2
19/16
15/8
111/16
1¾
 2
2¼
2½
2¾
3
Thread:
Coarse
Fine
Extra Fine
Glossary