[TR] Replacement bolts

[Karl Vacek]

Last question first - yes, "Fine" varies by fastener size.  And there are 
often several series of threads all called "Fine" (or "Extra Fine".  Gotta 
know the nominal diameter and the thread count (per inch).

Many NAPA stores still have a decent selection, though that's diminishing as 
consumer-chain auto parts stores eat them up.  Or try an industrial (mill) 
supply outlet.  And there's also McMaster-Carr.

When you can't otherwise source a close-tolerance bolt or screw, try an 
aircraft supply like Aircraft Spruce or Freeman's or a zillion others. 
There are many An or MS (different vintages of military standards) fasteners 
including shoulder bolts, and a number of different materials, strengths, 
and finishes as well as a choice of drilled head, drilled shank, or 
undrilled in many types.

Karl



> Hello List:
>  In attempting to replace some of the nut/bolts in my TR2 project, have 
> found it difficult to find the exact bolt, especially for bolts with 
> unthreaded shanks in various lengths. How important is it to get bolts 
> with the exact unthreaded shank length? Most of the replacements I have 
> been able to find are threaded the complete length. Does this present a 
> problem when replacing an unthreaded shank bolt?? Thinking mainly of the 
> driveshaft flange bolts and rear backing plate/axle attachment bolts.
> I've always understood that most of the fasteners are "fine" thread - NF. 
> Have seen listings with threads per inch of 24, 20 and 18 on larger bolts 
> all as "fine" or NF. Am I missing something here or all they all 
> considered "fine" and vary by size of bolt.