What are the standard bolt sizes?
US Standard Thread Length for Bolts
| Bolt Diameter | Standard Thread Length (in.) * | |
|---|---|---|
| Bolts 6 inches and shorter | Bolts longer than 6 inches | |
| 1/4″ | 3/4″ | 1″ |
| 5/16″ | 7/8″ | 1-1/8″ |
| 3/8″ | 1″ | 1-1/4″ |
What do bolt size numbers mean?
The size of a metric bolt is specified using pitch, diameter, and length in millimeters. For example, in M8-1.0*20, the “M” means the Metric thread designation, the digit 8 refers to the Nominal diameter (in millimeters), 1.0 refers to the pitch, and 20 refers to the length.
What size bolt is an M8?
Metric clearance and tapping drill hole sizes.
| Size | Clearance Hole mm | Tapping Drill (std Pitch) |
|---|---|---|
| M5 | 5.5 | 4.2 mm |
| M6 | 6.5 | 5.0 mm |
| M8 | 9 | 6.75 mm |
| M10 | 11 | 8.5 mm |
What is a M6 bolt size?
M6 refers to a metric 6mm screw. The outside diameter of the threads is 6mm. The standard metric rack screw is actually an M6 x 1mm. The number “1mm” refers to 1 threads per millimeter.
What is M8 bolt size?
Metric clearance and tapping drill hole sizes.
| Size | Clearance Hole mm | Tapping Drill (std Pitch) |
|---|---|---|
| M6 | 6.5 | 5.0 mm |
| M8 | 9 | 6.75 mm |
| M10 | 11 | 8.5 mm |
| M12 | 14 | 10.25 mm |
How can you tell if a bolt is metric or standard?
Telling the difference between a metric and imperial bolt is easy. If the bolt has lines on the head its standard or imperial. If the bolt has numbers on the head then its metric. These markings indicate how strong the bolt is they call this tensile strength.
What does M8 1.25 mean?
For metric fasteners, you will see a M8 x 1.25 or an M8 x 1. For thread pitch, the distance between two points is the second number meaning the higher the number the fewer threads there are. This means the M8 x 1.25 is the coarse threading and the M8 x 1 is the fine thread.
Are m10 and 3/8 the same?
It’s the same size. 3/8 is in inch and and its 10mm.
Where can I find images of bolts and nuts?
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What are the dimensions of a steel bolt?
Body Diameter – There may be a reasonable swell or fin under the head or die seam on the body not to exceed the basic bolt diameter by the following: 0.030″ for sizes up to 1/2″. 0.050″ for sizes 5/8″ and 3/4″.