What size bolt is 8mm? - Project Sports
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What size bolt is 8mm?

3 min read

Asked by: Gerardo Bullets

The defined diameter of metric bolts is actually slightly larger than the actual diameter of the bolt shaft. So an M8 bolt would have a shaft diameter that’s slightly under 8mm which means that the bolt should fit through an 8mm hole.

Is 5/16 The same as M8?

To sum up: M8 and 5/16 are different bolts. M8 and 5/16 are not compatible. It is not recommended to use a M8 bolt into a 5/16 thread (and vice-versa), otherwise you run the risk of forcing and damaging the thread.

What size is an M8 bolt in MM?

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 is an M8 bolt in inches?

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 size wrench fits a 8mm bolt?

Metric Bolt Head/Wrench Size

Bolt Diameter (mm) Head/Wrench Size (mm)
ANSI/ISO DIN
7 11
8 13 13
10 16 17

Is an M8 bolt 8mm?

The defined diameter of metric bolts is actually slightly larger than the actual diameter of the bolt shaft. So an M8 bolt would have a shaft diameter that’s slightly under 8mm which means that the bolt should fit through an 8mm hole.

What size is a #8 bolt?

American Screw Sizes

THREAD DIAMETER
Size Nearest Fraction Millimeter
#5 1/8 3.1
#6 9/64 3.3
#8 5/32 4.2

What socket is M8 bolt?

FLAT HEAD SOCKET CAP SCREW – METRIC

Size Head Diameter Hexagon Socket Size
M4-0.7 8.96 2.50
M5-0.8 11.20 3.00
M6-1.0 13.44 4.00
M8-1.25 17.92 5.00

How do you measure a M8 bolt?

You have a full head like this it's always measured a bolt from under the head to the end of the bolt.

What size is a M10 bolt?

Metric Hex Bolt Dimensions

NOMINAL SIZE (D) BODY DIAMETER ACROSS THE FLATS
m10 10.00 15.73
m12 12.00 17.73
m14 14.00 20.67
m16 16.00 23.67

What size is M8 nut?

M8 (8mm) Thread Size.

What is M10 in MM?

Spanner and Allen Key Sizes

Size Spanner Allen Key
M8 13 mm 6 mm
M10 17 mm 8 mm
M12 19 mm 10 mm
M16 24 mm 14 mm

Does M10 mean 10mm?

If the size is M10 x 25, that would mean that the diameter is 10 mm.

What does M8 mean?

M8 means “Mate.” The abbreviation M8 is an informal term of endearment for a friend. Most often used between men, M8 can also be a term of general acknowledgement.

What size is M6 bolt in mm?

6 mm

M6 Threads



M6 refers to a metric 6 mm screw. The outside diameter of the threads is 6 mm. The standard metric rack screw is actually an M6 x 0.1 mm.

How do you read metric bolt sizes?

Determine the length of the metric bolt by looking at the third number. For example, if the metric bolt was M14x1. 5×25, it would have a length of 25 millimeters. Look on the bolt head for the number denoting the strength of the bolt.

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.

What does 8.8 mean on a bolt?

So, in English, a Property Class 8.8 bolt is a bolt with a nominal tensile strength of 800 MPa and a nominal yield strength that is 80% of that nominal tensile strength, so 640 MPa.