Allen Key size

Allen Key size

This topic has 9 replies, 7 voices, and was last updated 19 March 2013 at 19:10 by JasonB.

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19 March 2013 at 14:51 #114752
Tony Martyr
Participant
@tonymartyr14488
I thought I had every allen-key known to man under 1/2" but I am currently defeated by one for tightening a set of 6BA grub-screws.

Can anyone help with the size? I am assuming they would be an imperial size but my sets don't seem to include the correct one.

Tony
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19 March 2013 at 14:51 #22529
Tony Martyr
Participant
@tonymartyr14488
19 March 2013 at 15:04 #114754
JasonB
Moderator
@jasonb
0.050"

J
19 March 2013 at 18:43 #114768
Andyf
Participant
@andyf
I think 1.25mm is the smallest common metric Allen key, and would probably substitute for 0.05". 1.25mm = 0.0492", so less than 1 thou undersize.

Andy.

Edited By Andyf on 19/03/2013 18:44:36
19 March 2013 at 18:45 #114769
David Littlewood
Participant
@davidlittlewood51847
If you have trouble finding one, you can get them (at a price!) from Slater's Plastikard; they are the standard size for fixing Slater's wheels on to O gauge locos.

**LINK**

I'm sure you could find them cheaper somewhere else though.

David
19 March 2013 at 18:51 #114770
Michael Cox 1
Participant
@michaelcox1
Model Fixings (http://www.modelfixings.co.uk) stock 0.05" hex keys.

Mike
19 March 2013 at 18:52 #114771
JasonB
Moderator
@jasonb
Can't see why you would want to buy a metric substitute taht won't fit so well when 50thou keys are readily available

Try EKP, MSC, GS Supplies, Reeves, Bruce, Model Fixings etc

J&L/MSC are probably the cheapest with decent Eklind ones costing 9p
19 March 2013 at 18:55 #114772
Ian Abbott
Participant
@ianabbott31222
Grind a larger one down to size

Ian
19 March 2013 at 18:59 #114773
Anonymous
There's nothing to say that the 6BA grub screws have a standard size hex hole, depending upon their provenance.

Regards,

Andrew
19 March 2013 at 19:10 #114774
JasonB
Moderator
@jasonb
Well I suppose we have to assume they are made to BS 2470 just as we would have to assume all other fixings are to the relevant british standard.
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