# What size bolt has an 18 mm head?

Contents

## What is Head size of bolt?

Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt

US Bolts
Bolt Diameter (in) Head and Wrench Size (in)
1/2 3/4 7/8
9/16 13/16
5/8 15/16 1 1/16

## What size head does a 16mm bolt have?

Metric Hex Bolt Dimensions

NOMINAL SIZE (D) BODY DIAMETER HEAD THICKNESS
m12 12.00 7.76
m14 14.00 9.09
m16 16.00 10.32
m20 20.00 12.88

## How many mm is M8 bolt?

Standard metric 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

## What is the head size of a M8 bolt?

SOCKET HEAD CAP SCREW – METRIC

M5-0.8 5.00 8.50
M6-1.0 6.00 10.00
M8-1.25 8.00 13.00
M10-1.50 10.00 16.00

## How are bolt head sizes determined?

For fasteners where the head usually sits above the surface, the measurement is from directly under the head to the end of the fastener. For fasteners that are designed to be countersunk, the measurement is made from the point on the head where the surface of the material is, to the end of the fastener.

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## Is an M12 bolt 12mm?

M12 is a 12mm diameter thread. You have to be sure the thread pitch measured in threads per millimeter (1.5 here) is the same as what u need.

## What does M12 mean?

6. Those are metric screw dimensions. M10 means a 10 millimeter outer diameter for the bolt or whatever piece it is; M12 means 12 millimeters. The part after the ‘x’ is the pitch — how many mm a thread is wide. To figure out which you have, you can measure the existing part with calipers and a thread gauge.

## Is 5/16 The same as M8?

Well, quick answer is no. They are not the same and they are not interchangeable, although they can work under certain circumstances. The most important part is understanding the meaning of M8 and 5/16 to refer to the size of a metric screw or bolt, so then we can see why they aren’t the same thing!

## What size bolt has a 17mm head?

Size Chart

Bolt size Size Tolerance
M10 17mm 17.40
7/16″UNF 11/16″ 17.86
18mm 18.40
3/8″BSW 18.43

## What does M12 mean on a bolt?

M12x1. 75 is the measurement code that indicates the thread size and thread pitch of a screw. The first half (M12), is the size measurement (metric) taken across the outside diameter of the thread (which in this case is 12mm).

## What size is an M7 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

## How can you tell if a bolt is metric?

The metric screw thread is identified by the capital letter M, followed by the nominal diameter. Metric threads are measured by the distance between two adjacent threads in millimeters (pitch). Threads on a standard (inch based) fastener are measured by counting the number of threads per inch.

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## Is an M8 bolt 8mm wide?

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

## What size metric bolt has a 10mm head?

The standard 6mm cap screw has a 10mm head.