What bolt size is M20?
Dimensions for DIN931 Hex Head Bolt
| Diameter (d) | Pitch | Across Flats (s) |
|---|---|---|
| M18 | 2.5mm | 27mm |
| M20 | 2.5mm | 30mm |
| M22 | 2.5mm | 32mm |
| M24 | 3.0mm | 36mm |
What is the specification of bolt?
Help with Bolts specifications:
| Inch | |
|---|---|
| 7/16″ | 7/16″ fasteners have a nominal thread diameter of .4375 in. |
| 1/2″ | 1/2″ fasteners have a nominal thread diameter of .500 in. |
| 5/8″ | 5/8″ fasteners have a nominal thread diameter of .625 in. |
| 3/4″ | 3/4″ fasteners have a nominal thread diameter of .750 in. |
What diameter is M20?
Metric clearance and tapping drill hole sizes.
| Size | Clearance Hole mm | Tapping Drill (fine pitch) |
|---|---|---|
| M12 | 14 | 10.5 mm |
| M16 | 18 | 16.5 mm |
| M20 | 22 | 20.5 mm |
| M24 | 26 | 22 mm |
What is the diameter of M20?
| Tap size | Basic major dia (mm) | Basic major dia (inch) |
|---|---|---|
| M20 x 2.5 | 20mm | .7874 |
| M20 x 1.5 | 20mm | .7874 |
| M22 x 2.5 | 22mm | .8661 |
| M22 x 1.5 | 22mm | .8661 |
What are bolt grades?
The grade of a bolt determines the maximum amount of stress (tensile strength) that the bolt can handle. Tensile strength is the amount of pull the bolt can withstand before breaking. The method used for tightening the bolt is also dependent upon the grade of the bolt.
What does M20 mean?
M20 signifies mixture of cement, sand and aggregate which are prepared in such a manner that a cement concrete cube of size 15 cm x 15 cm x 15 cm is formed with characteristic strength (fck) of 20mpa while examining it after being cured for 28 days.
What do numbers on bolts mean?
Bolt Grade Markings Each grade has a specific bolt strength. No matter the system used to grade the bolts, the higher number means the stronger the bolt. For most home and automotive applications, you won’t need anything more than a grade 8 bolt strength or metric class 10.9.
Which is stronger M20 or M25?
The behavior of M25 concrete is stiffer than M20. It can take more loads. The deflection is less as compared to M20 concrete as shown in fig.