Frequent question: What size bolt takes a 8mm socket?

What size bolt is 8mm?

Metric Shoulder Bolt Dimensions

Shoulder Diameter (A) Thread (C) Head Diameter (E)
6mm 5mm x 0.8 10mm
8mm 6mm x 1.0 13mm
10mm 8mm x 1.25 16mm
12mm 10mm x 1.5 18mm

What size socket do you need for an M8 nut?

Metric Spanner Sizes

Nominal Size Spanner Size
M6 10mm
M7 11mm
M8 13mm
M10 17mm

What size hex is an M8 bolt?

Dimensions for DIN931 Hex Head Bolt

Diameter (d) Pitch Across Flats (s)
M5 0.8mm 8mm
M6 1.0mm 10mm
M7 1.0mm 11mm
M8 1.25mm 13mm

What size of bolts do I need?

A typical rule of thumb . . . Use a bolt diameter that is 1.5 – 2.5 times (up to three times) the thickness of the thinner material you are bolting together. So, for 1/8″ material, a 1/4″ diameter is often a good bolt choice. For 1/4″ thick material, perhaps a 3/8″ or 1/2″ bolt.

Is an M8 bolt 8mm wide?

But, to answer your Q – an M8 bolt will fit in an 8mm hole. There is clearance.

Will a 8mm bolt fit a 5/16 nut?

Can I use a M8 bolt on a 5/16 thread? They look pretty similar at glance… Well, quick answer is no. They are not the same and they are not interchangeable, although they can work under certain circumstances.

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How many inches is M8 bolt?

Table 3.

Metric Closest Inch
M8-1.25 5/16-18 (Smaller)
M10-1.5 3/8-16 (Smaller)
M12-1.75 1/2-13 (Larger)
M14-2.0 9/16-12 (Larger)

What is m20 bolt?

Metric Hex Bolt Dimensions

m14 14.00 22.00
m16 16.00 24.00
m20 20.00 30.00
m24 24.00 36.00

What size is a m20 bolt?

Metric Hex Bolt Dimensions

m12 12.00 20.03
m14 14.00 23.35
m16 16.00 26.75
m20 20.00 32.95

What does M8 mean?

M8 means “Mate.” M8 uses the number 8 to replace the letters “ate.” Here are some other terms that make use of this efficiency: D8 (Date)

How do I choose the right bolt?

This is how you choose the right bolt for the joint:

  1. First, identify the load case.
  2. Determine the necessary clamping force in the joint.
  3. Choose the smallest bolt diameter that can support the clamp load.
  4. Choose an effective bolt securing method.
  5. Decide on the most appropriate tightening method.

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.

How do you measure bolt socket size?


  1. Insert the shank of the bolt into the holes in a bolt-sizing gauge. …
  2. Locate the printed bolt size to the side of the correct hole on the gauge (for example, 1/2, 3/4 or in mm for metric bolts).
  3. Locate the socket head in the socket set that has this size printed on its side.
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