[Healeys] 4K5917 what's so special?

Alan Seigrist healey.nut at gmail.com
Sun Jul 21 21:27:35 MDT 2013


On my A90 they have some oddball self tappers on the glove box lids, I
think they used 4K numbers on specialist screws... but can't find any more
data.


On Sun, Jul 21, 2013 at 8:54 PM, Michael Salter <michaelsalter at gmail.com>wrote:

> Here is one for the purists....
> The overdrive relays, there are 2, on a BN1 are secured to the heater duct
> by
> 4 self tapping screws part # 4K5917.
> According to the parts book that is the only place where screws with that
> part
> number are used on any model as far as I can tell.
> Does anyone know what is so special about these 4 screws, or for that
> matter
> know how they differ from others used generously throughout Healeys.
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