drive repair tips?

[Patrick Finnegan]

On Thursday 18 August 2005 01:34, der Mouse wrote:
> I have an interchangeable-bit screwdriver whose set of bits includes
> some three dozen "security" bits of various kinds.  I don't know the
> names of most of them, 

Incase someone is interested, the names of the security bits are...

> but there are pin-in-the-middle torx, 

tamperproof torx

> pin-in-the-middle hexagon ("Allen"), something I might call a

tamperproof allen

> three-bladed Phillips (like a Phillips but with one vane removed and
> the remaining three vanes at 120° from one another), 

tri-wing

> "offset" Phillips (like Phillips with each vane offset to the side by
> approximately its own thickness)

torq-set

> two-point bits (for which the screw 
> head is solid with two small holes, one on each side of centre), and

spanner

> what I might call "butterfly" bits - I have no simple unambiguous
> name for the shape,

That sounds like a 'clutch bit' as far as I can guess.  Does the head 
look like an hourglass if viewed appropriately?

Pat
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