Instrument head screws ?

Have instrument head* screws become obsolete ? Googling failed to produce one supplier. I 'm after a couple of dozen 2BA X 0.5" slotted
in either stainless steel or chrome-plated.
* The ones that are countersunk but with a slightly domed head.
Jim Hawkins
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Do a search for Raised Head Countersunk, I Googled a couple of pages of hits, mostly metric. I hate to say this, but at a push you could perhaps use M5 for 2BA - yeah horrid I know, but ports and storms etc.
Richard
wrote:

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Mon, 07 Jan 2008 11:37:46 +0000, Richard

...or even 3/16" BSF, which is probably closer though maybe no easier to find.
Tim
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Try www.modern-screws.co.uk They specialise in just this kind of stuff hth Mike
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Jim Hawkins Wrote:

BA was obsolete in 1965 or 66 i think, havent specified any on drawing at work since 1976 so i would expect they are getting rare.
Steve Larne
-- SD ----------------------------------------------------------------------- SDL's Profile: http://www.rcgroups.com/forums/member.php?u 756 View this thread: http://www.rcgroups.com/forums/showthread.php?ty768
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

We still use BA on transformers, and things like the Red Spot fuseholders which won't take the head of an M5 screw as the moulding was designed for BA.
We have 2BA in cheeeseheads X 1/2", about 4000, as we did a bulk buy for the fuseholders, but the raised countersunk one is/was peculiar to the 19" equipment rack world and equipment that was made in Admiralty Grey BS381C Shade 687.
I've got something in the workshop with a load of chrome BA stuff in it, but I'll have to find it first and have a look through. No promises.
Peter
-- Peter & Rita Forbes Email: snipped-for-privacy@easynet.co.uk http://www.oldengine.org/members/diesel http://www.stationary-engine.co.uk
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Looks like we have the real item....
Chrome-plated 2BA X 1/2" Raised Countersunk Slotted screws.
OD is a bit down at 0.180" overall length including the head is 0.535"
We have 50+
Peter -- Peter & Rita Forbes Email: snipped-for-privacy@easynet.co.uk http://www.oldengine.org/members/diesel http://www.stationary-engine.co.uk
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Hello. try thes
http://www.a2stainless.co.uk/2BA-x-1-2-Slotted-Raise-CSK-Screw_ALJP.aspx I can recommend them. Cheer
-- Nouris ----------------------------------------------------------------------- Nourish's Profile: http://www.rcgroups.com/forums/member.php?u 812 View this thread: http://www.rcgroups.com/forums/showthread.php?ty768
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

I have no problem getting BA screws, studding, taps and dies, though I must admit I have not seen chromed screws. I use BA all the time in preference to metric and BSF sizes for clock work.
Cliff Coggin.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Thanks to all who responded, and especially to Peter - thanks to whom I now have the exact item!
Jim Hawkins
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.