As far as quality of a bolt goes, I would shy away from grade 8 purchased
at a locat hardware store. The origin of the fasteners tend to worry me.
I like the fastener stores because they have policies and accountability
for their fasteners. If you want the highest quality fastener I'd go with
socket head cap screws, these are second or third in strength falling
behind only aircraft applications (NAS and the other one).
aaron
On Wed, 30 Dec 1998, Alan Myers wrote:
> I can confirm what you are saying Aaron. In the process of rebuilding my
> TR4 I've been able to buy the vast majority of fasteners from a good
> local hardware store, and I've been replacing virtually everything. Vast
> majority are UNF and easy to find. I do recommend being careful about
> the grade of fastener you buy, try to stick with grade 8 or at least 5
> for anything holding together critical systems like suspension, brakes,
> steering, drive train, etc.
>=20
> Alan Myers
> San Jose, Calif.
> '62 TR4 #CT17602
>=20
>=20
> Aaron Johnson wrote:
>=20
> > I wouldn't imagine that you have any british fine thread on your car.
> > Almost everything, sans some brake hardware, i sprobably unified
> > national
> > thread size, either coarse (unlikely in a triumph), fine (most common)
> > or
> > extra fine ( found in a couple of places). These are the UNC, UNF,
> > and
> > UNEF suffixes. Look in the phone book under fasteners, there are
> > probably
> > three or four stores that are fastener stores that will have almost
> > anything you need. Some of the things that are used on the cars are a
> >
> > little odd, like studs with fine thread on both ends, because most
> > engineering standards are to use coarse thread into a casting. The
> > easy
> > way to tell if something is Bristish Standard Whitworth (BSW) or
> > British
> > Standard Fine (BSF) is if there is a prominent radius on the thread.
> > UN-series threads lack this radius.
> >
> > hope this helps
> >
> > aaron
> >
> > On Tue, 29 Dec 1998 MPRICE@KeystoneSystems.com wrote:
> >
> > >
> > > I'm sure this thread has come and gone a few times prior to my
> > joining
> > > the list. If so, my humble appologies. None-the-less, I need to get
> > some
> > > questions asked. I'm working on a '68 TR250, so bolt heads and nuts
> > all
> > > seem to be pretty much SAE sizes. I haven't found any Whitworth
> > (sp?)
> > > fasteners. (are there any on this car?)
> > >
> > > 1) I understand that the threads on these fasteners are a british
> > fine
> > > thread or something like that. Is this the same as National Fine
> > Threads
> > > we see here in the US?
> > >
> > > 2)I've seen many letter combinations thrown around, and other than
> > Pipe
> > > Threads (NPT?), and Standard (NST?), I haven't a clue as to what
> > they
> > > all are. For the fasteners on my car, what am I looking for? BFT?
> > >
> > > 3)Is there a readily available source for these fasteners other than
> > the
> > > big 3? I can't imagine that my local Ace Hardware stocks these, and
> > I
> > > don't know all the sizes I'm going to need. ("Yup, gonna need 4 just
> >
> > > like this old rusty one here.")
> > >
> > > 4)Taps and Dies for these? Where is a good source for these?
> > >
> > > I appreciate any information from the list.
> > > TIA folks.
> > > Mark
> > > 68 TR250's (In need of things to attach parts to the cars with)
> > >
> > >
>=20
>=20
>=20
> --
> MZ=90
>=20
>=20
>=20
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