Dave :
SAE Grade 8 fasteners have a minimum tensile strength of 150,000 psi, which
would appear to exceed your spec. Grade 8 (and better) fasteners are
readily available in the US, literally at almost any hardware store.
One such is McMaster-Carr, you can order on-line from them at
http://www.mcmaster.com/
Or, contact their eastern office at :
P.O. Box 440
New Brunswick, NJ 08903-0440
Sales Desk and Customer Service: (732) 329-3200
Fax: (732) 329-3772
Ventas y Servicio (Espaqol): (732) 329-6212
Ventes et Service (Frangais): (732) 329-0004
TTY for Hearing Impaired: (630) 834-8844
Other Departments: (732) 329-6666
Their part number 91257A700 and 91257A660 would seem to meet your
specifications.
NFI, just a satisfied customer.
Randall
> > --- dave worne <daveworne@hotmail.com> wrote:
> > > I am having a difficulty finding the proper bolts in
> > > the UK - I can find the
> > > correct sizes etc but not the correct tensile
> > > strength.
> > > Details as follows:- (for a vehicle set)
> > >
> > > 4 - 7/16"UNF x 21/4" long.
> > > 4 - 3/8 UNF 21/8" long. (21/4" acceptable)
> > > The bolts require to be Type 'U' - 60 tons tensile,
> > > which is where my
> > > difficulty lies. I can obtain the sizes, but not the
> > > tensile strength.
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