Metric Bolt measurements

[dor]

While trying to find out if my tap tails were 10 or 12mm I came across this useful guide to measurements associated with metric nuts and bolts.

Very useful!

http://www.thomsonrail.com/Technical Resources/A short guide to metric nuts and bolts.pdf

 

[Eeyore]

1 hour ago, dor said:

While trying to find out if my tap tails were 10 or 12mm I came across this useful guide to measurements associated with metric nuts and bolts.

Very useful!

http://www.thomsonrail.com/Technical Resources/A short guide to metric nuts and bolts.pdf

 

There is one obvious difference that affects owners of newer (usually Japanese) engines; M8 fittings often need a 12mm spanner.

I mention this because at some time or another we have to change or re tension alternator belt drives.

There are lots of other variations, but none that I can think of that a boater would regularly encounter.

 

 

[blackrose]

Thanks, it's been saved to my bookmarks.

[X Alan W]

14 hours ago, Eeyore said:

There is one obvious difference that affects owners of newer (usually Japanese) engines; M8 fittings often need a 12mm spanner.

I mention this because at some time or another we have to change or re tension alternator belt drives.

There are lots of other variations, but none that I can think of that a boater would regularly encounter.

 

 

Several of the sizes of bolts used on newer japanese kit the type with a flange under the head take different (smaller size spanner than standard)

[Iain_S]

Not just Japanese.

The "new style" M8 bolts that hold the front on a Landrover have a 10mm AF head, with a flange under it (Replacing a standard 13mm headed bolt plus washer)

[Eeyore]

The joy of standards is that there are so many to choose from......

[WotEver]

8 minutes ago, Eeyore said:

The joy of standards is that there are so many to choose from......

We used to say that about pro audio cabling. XLR standard? Sure, who’s do you want? The audio company Shure even used both variants on one of their mixers - pin 2 hot on the inputs, pin 3 hot on the outputs!

[Mad Harold]

11 minutes ago, Eeyore said:

The joy of standards is that there are so many to choose from......

No problem. You just need two adjustable spanners. One metric and one imperial.

[Machpoint005]

38 minutes ago, Furness said:

No problem. You just need two adjustable spanners bolt rounders. One metric and one imperial.

I guess it's only une clef anglaise if it's imperial size?

Edited February 7, 2018 by Machpoint005
to correct the gender