That sounds real familiar as a 'rule of thumb' but I think it only applies
to rolled or forged threads.
Paul Tegler
ptegler@cablespeed.com
www.teglerizer.com
----- Original Message -----
From: "M D "Doc" Nugent" <docnugent@yahoo.com>
To: <spitfires@autox.team.net>
Sent: Sunday, August 07, 2005 11:58 AM
Subject: Re: mea culpa - bolt question
> The rule I learned is that you only need
> thread-to-thread contact as deep as the bolt shaft is
> wide. The context for the rule was wheel lugbolts on
> Porsches, but it makes some sense.
>
> Using the rule, a 3/8" shaft bolt (any length) that
> has 3/8" of thread-to-thread contact won't be any
> stronger, or any less apt to break, than one with 3/4"
> of thread-to-thread contact. [Substitute your actual
> bolt size for 3/8"]
>
> OICBW,
> M D "Doc" Nugent
> Renton, WA
|