Yeah that's what it says in the Machinist's Practical Guide. But pull a head
bolt from a Small block Ford and see if it's really .4375. The one I tried
wasn't Chrysler rod bolt--.373. Life is sometimes that way. Roller formed
bolts are rarely at full size in my experience. As long as the pitch
diameter is correct a few thou. on the OD isn't something to get excited
about.
----- Original Message -----
From: "don thigpen" <piggy@accessatc.net>
To: <neil@dbelltech.com>; "'Rich Fox'" <v4gr@rcn.com>; "'Dale Krumheuer'"
<dmirror3@yahoo.com>; <land-speed@autox.team.net>
Sent: Monday, June 18, 2007 8:20 PM
Subject: Re: [Land-speed] Not LSR Question, Need to cut threads to make a
3/8 bolt
>a 3/8 bolt thread does have a major diameter of .375 , unless of course you
>have a very low class of fit and even then it is speced at .375 and the nut
>is speced accordingly . please dont put a bolt in my vehicle that is
>undersized as it will not hold its threads , if it is a 3/8 bolt make it
>3/8 , if 1/4 make it 1/4 ,etc . KEEP CHEAP UNDERSIZED FASTENERS ON
>LAWNMOWERS
> if i had my other puter up i could send you a real nice chart with fits
> and major and minor dia's of bolts and nuts but the other puter is broken
>
> don t
> evo power & machine
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