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.

Viewing 10 posts - 1 through 10 (of 10 total)

Author

Posts
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
Advert

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.
Author

Posts

Viewing 10 posts - 1 through 10 (of 10 total)

Please log in to reply to this topic. Registering is free and easy using the links on the menu at the top of this page.

Code of Conduct

Latest Replies

Viewing 25 topics - 1 through 25 (of 25 total)

- Topic
- Voices
- Posts
- Last Post
- Clock gear cutting needed or advice in setting up from scratch.
  Started by: mccormackclockrepairs in: Introduce Yourself – New members start here!
- 3
- 4
- 27 July 2025 at 00:44
  mccormackclockrepairs
- smokeless cutting oil
  Started by: Chris12 in: General Questions
- 5
- 5
- 27 July 2025 at 00:19
  Charles Lamont
- Model Engine running just off a naked flame 1 2
  Started by: Blue Heeler in: Stationary engines
- 10
- 34
- 27 July 2025 at 00:13
  Blue Heeler
- Plain bearing speeds
  Started by: zytoooh in: General Questions
- 11
- 13
- 26 July 2025 at 22:44
  Nigel Graham 2
- Foru-Way Toolpost Question
  Started by: Nigel Graham 2 in: Workshop Tools and Tooling
- 6
- 15
- 26 July 2025 at 22:04
  Nigel Graham 2
- Simple chuck/faceplate threaded mount for mill table
  Started by: Peter Cook 6 in: Workshop Tools and Tooling
- 4
- 5
- 26 July 2025 at 21:41
  Nigel Graham 2
- Amadeal lathes – Any good?? 1 2
  Started by: Tim Sallows in: Workshop Tools and Tooling
- 17
- 33
- 26 July 2025 at 21:21
  Bill Phinn
- Boxford STS 10 30 weights
  Started by: PutneyChap in: Manual machine tools
- 4
- 6
- 26 July 2025 at 20:04
  Mark Hall
- Recycling UK
  Started by: Speedy Builder5 in: The Tea Room
- 11
- 12
- 26 July 2025 at 19:27
  noel shelley
- Bridgeport ways and wear
  Started by: inline in: Manual machine tools
- 8
- 19
- 26 July 2025 at 17:53
  ryan.carter848
- Lathe index tips
  Started by: petro1head in: General Questions
- 9
- 21
- 26 July 2025 at 13:16
  JasonB
- John Wilding turret clock escapement wheel
  Started by: Andy Freeman 1 in: Clocks and Scientific Instruments
- 2
- 3
- 26 July 2025 at 10:27
  bernard towers
- Reel repair
  Started by: Andy Sproule in: General Questions
- 8
- 10
- 26 July 2025 at 10:20
  Andy Sproule
- Arc Euro Trade Ltd. 1 2 3
  Started by: Ketan Swali in: General Questions
- 46
- 52
- 26 July 2025 at 09:57
  Ketan Swali
- Track my loco.
  Started by: Thomas Clarke in: General Questions
- 10
- 13
- 26 July 2025 at 09:35
  Speedy Builder5
- Calculation the deflection of a box section steel beam supported at each end
  Started by: Greensands in: Help and Assistance! (Offered or Wanted)
- 7
- 9
- 26 July 2025 at 08:42
  Nicholas Farr
- Adcock And Shipley vertical milling head – worth anything?
  Started by: ell81 in: General Questions
- 3
- 3
- 25 July 2025 at 23:25
  Bazyle
- Round Bar Bender
  Started by: Trevor Howley in: Workshop Tools and Tooling
- 8
- 18
- 25 July 2025 at 20:16
  Trevor Howley
- Electroplating questions
  Started by: Baldric in: Help and Assistance! (Offered or Wanted)
- 4
- 6
- 25 July 2025 at 19:33
  bernard towers
- Instrument/DTI repair
  Started by: Lee Reynolds 1 in: Help and Assistance! (Offered or Wanted)
- 6
- 11
- 25 July 2025 at 19:23
  Dave S
- 7MM Diameter Drills
  Started by: KEITH BEAUMONT in: The Tea Room
- 11
- 18
- 25 July 2025 at 18:31
  Howard Lewis
- Got some gear and some idea!
  Started by: zytoooh in: Introduce Yourself – New members start here!
- 8
- 15
- 25 July 2025 at 17:47
  Charles Lamont
- Yet another scam
  Started by: Dell in: The Tea Room
- 6
- 7
- 25 July 2025 at 13:22
  Nigel Graham 2
- Colchester Master Mk1 lifting + moving advice 1 2
  Started by: choochoo_baloo in: Manual machine tools
- 17
- 40
- 25 July 2025 at 12:00
  Mark Hall
- My vise isn’t at 90 degrees 1 2
  Started by: moonman in: Beginners questions
- 18
- 30
- 25 July 2025 at 11:51
  Bazyle

Viewing 25 topics - 1 through 25 (of 25 total)

View full reply list.

Latest Issue

August 2025

Buy Latest/Back Issues

Newsletter Sign-up

Latest Replies