Seat track to bottom frame hardware

All,

It is amazing when after 8 years of working the 1973 coupe, some hardware seem to have legs. Case in point is the hardware that bolts the sliding tracks the bottom of the front seat frames. I am fortunate to have a location that has several original 1971-1972 Mach one parts seats to get the hardware. What surprised me was the Torx head bolts. What? Huh? When did Ford start using these?





Source: 1971-72 Mustang Interior Assembly Manual  - CC. Jim Osborne 5002  Page 44

Since these bolts new are pretty much non-existence, I am going to source some grade 8 that will fit!

What are your opinions?

Hi, they were only torx head in early 71, most are 3/8 hex

Don,

Thanks for the information!

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They are a bit odd very small head with flange washer to fit in the track

There were very early RED torx then black

Then 3/8 hex head in a short for the fastback and long version for the convertibles with a spacer

Are you missing all 8 ?

A