[Healeys] 100 Windshield Bolt

[Michael Salter]

Wait, wait, wait ... the shouldered bolt is right hand thread on both sides
however early cars were BSF thread and later cars UNF thread.
The little screw that goes into the end of the bolt to prevent the knurled
knob from being unscrewed before removing said little screw was left hand
thread.
Actually a great idea but engineeringly poor because a decent crank on the
knurled knob could fairly easily shear off the little screw.
I believe most of the repro screws use a right hand thread for the little
screw with a touch of Loctite.
Actually turned up a pair yesterday from stainless steel.

M


On Sat., Sep. 18, 2021, 9:55 p.m. Bob Spidell, <bspidell at comcast.net> wrote:

> Since the List is moribund; I'll throw this out: Anyone know where to
> get the correct 'shouldered bolt' and screw for the driver (LHD) side
> windshield securing knob? The correct one is left-hand thread; but my
> dad didn't know that and drilled the original out. Here's the Moss
> replacement, which is right-hand thread:
>
> https://mossmotors.com/bolt-shouldered-with-screw
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