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What diameter is m6?

2 min read

Asked by: Jennifer Lowe

6 mmM6 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.

What is the diameter of a 6mm bolt?

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 is M6 size in mm?

Metric clearance and tapping drill hole sizes.

Size Clearance Hole mm Tapping Drill (fine pitch)
M5 5.5
M6 6.5 5.25 mm
M8 9 7 mm
M10 11 9.0 or 8.75 mm

Are M6 and 1/4 the same?

A normal M6 screw is a rattly fit in a 1/4 BSF full nut.

How do you measure a M6 bolt?

You can identify an M6 screw by measuring the diameter with a ruler. It’ll be 6 mm, or slightly more than 7/32 inches (0.228″).

What size hole do I drill for a M6 bolt?

Use these tables for calculating the relevant size drill bit and clearance hole for ISO metric coarse and fine threads.



Fine Thread.

Size Pitch Drill
M5.5 0.5 5
M6 0.5 5.5
M6 0.75 5.25
M7 0.75 6.25

What size head is an M6 bolt?

M6 x 25mm Hexagon Head Bolt.

What does the M mean in bolt sizes?

metric size

M = This designates the fastener is a metric size. 10 = The nominal diameter in millimeters. 1.0 = The thread pitch, or distance between threads, in millimeters. 20 = The fastener’s length, in millimeters.

How are M screws measured?

Section on metric items this number is stamped on the surface of the fastener. And is preceded by the letter M a bolt with M 3 stamped on its head will have a diameter of 3 millimeters.

What size is a 6mm screw?

Metric Imperial Screw Conversion Chart

Diameter (mm) Length (mm) Closest Imperial Size Gauge x Length
6mm 30 12 x 1 1/4
40 12 x 1 1/2
50 12 x 2
60 12 x 2 3/8

What size is an M6 drill bit?

Tap Size

Tap Size Drill Size
M6 x 1 5mm
M6.3 x 1 5.5mm
M7 x 1 6.1mm
M8 x 1 7.1mm

What size hole do you drill for a M8 bolt?

Hi Mark, you need to use a small pilot drill (4 – 5mm] first then 12mm dia. for the M8 expansion bolts.