AF imperial Whitworth?

[dobbslc]

What's the difference?
Is there any difference?
I want a set of non metric spanners for various old things I own but don't really know what to buy.
Help!

 

[mtt.tr]

Af is across the flats
Whiteworth represents the bolt shank not the head.

Af will do majority of stuff but also often not . Sadly you need both

 

[brightspark]

Af os across the flats
Whiteworth represents the bolt shank not the head.

Af will do majority of stuff but often not also. Sadly you need both

majority of old british machines are whitworth .cars were generaly af

 

[Pete.]

What's the difference?
Is there any difference?
I want a set of non metric spanners for various old things I own but don't really know what to buy.
Help!

Your lathe will be all AF sizes.

 

[OJCar]

cars were generaly af

Apart from the ones that are purely Whitworth/ BSF & BA

 

[dobbslc]

But it has AF on the number plate!

 

[brightspark]

Your lathe will be all AF sizes.

my myford is all whitworth

 

[dobbslc]

Your lathe will be all AF sizes.

How perceptive of you Pete

 

[Bornfree]

Gardner engine's still used whitworth and BSF into the 1980s

 

[brightspark]

Apart from the ones that are purely Whitworth/ BSF & BA

wasnt on about old bangers more modern cars before metric

 

[OJCar]

wasnt on about old bangers more modern cars before metric

Like one of these?

Metric, AF, Whitworh and BA !

 

[Robotstar5]

wasnt on about old bangers more modern cars before metric

Then you have the Land Rovers that used a mix of imperial and metric fasteners

 

[OJCar]

http://www.baconsdozen.co.uk/tools/conversion charts.htm

Bottom of this page gives nearest spanner sizes to thread sizes.

 

[keithski122]

Just get an adjustable.

 

[Maker]

You need BA too, even though it's technically sort of metric, most metric sets don't include 10.5, 9.275, 8.225, etc.

 

[Mick Annick]

Then you have the Land Rovers that used a mix of imperial and metric fasteners

My Morgan is like that, just had the front bumper off - 4 metric bolts, 2 AF.

 

[gordon stephenson]

For whitworth they changed the bolt head and nut size to save metal, Around war time. A 3/4" bolt originaly had " full 3/4" spanners to suit the bolts, After the reduction on head size an 11/16" spanner was needed,

 

[Bornfree]

For whitworth they changed the bolt head and nut size to save metal, Around war time. A 3/4" bolt originaly had " full 3/4" spanners to suit the bolts, After the reduction on head size an 11/16" spanner was needed,

Is that why BS and whitworth are a size different?

 

[Kayos]

Like one of these?
View attachment 383621
Metric, AF, Whitworh and BA !

Often on the same part

 

[doubleboost]

AF refers to the size of the spanner .
1/2 inch AF is 1/2 inch Across Flats ie AF
UNF & UNC use AF spanners
Whitworth refers to the bolt size .
But before the war the nuts and bolt heads were bigger .
They scaled them down to save metal .
A full size Whitworth nut is a thing of beauty.
A metric nut is just a nut with no soal