72 Seat Mounting Bolts

[Edward J.]

What Are The Correct Marking For Seat Mounting Bolts And What Type Of Bolts, Some Have Pointed Ends And Some Are Flat, I Believe Ive Got A Few Mix And Matched Bolts. Thanks Ed

[Chuck S.]

Re: 72 Seat Mounting Bolts

What Are The Correct Marking For Seat Mounting Bolts And What Type Of Bolts, Some Have Pointed Ends And Some Are Flat, I Believe Ive Got A Few Mix And Matched Bolts. Thanks Ed

My 70 had SEMS indented hex head, pointed end, self-tapping screws with captured washer. That will probably work for your 72, but a different headstamp even on a 70 would not be surprising.

[Alan S.]

Re: 72 Seat Mounting Bolts

Hi Edward,
The bolts on my 71's seat track mounts have an odd looking headmark.
Its a large capital B with a very small capital H in it's center. There are also 3 hash marks, 1 each at 3, 6, and 9 o'clock. All 8 are the same.
They don't have pointed ends.
So another possibility for you to look for.
Regards,
Alan

[Bill L.]

Re: 72 Seat Mounting Bolts

My 70 has anchor head marks with no point.


Bill

[Steven G.]

Re: 72 Seat Mounting Bolts

I have looked at a 70 and all have flat ends, no points or self tapping ends, captured washers (5/16" x 1" bolt), 1/2" hex. head, course thread, and appear to be the same type bolts, but a mix of markings like mentioned and other markings not mentioned unpainted natural finish. I am thinking they may not always be a matching set, more input may be needed. Steve

[Pat M.]

Re: 72 Seat Mounting Bolts

I have looked at a 70 and all have flat ends, no points or self tapping ends, captured washers (5/16" x 1" bolt), 1/2" hex. head, course thread, and appear to be the same type bolts, but a mix of markings like mentioned and other markings not mentioned unpainted natural finish. I am thinking they may not always be a matching set, more input may be needed. Steve

I agree based on my limited experience, but I think the bolts were gray phosphate plated, like the seat rails.

[Rich P.]

Re: 72 Seat Mounting Bolts

Hi Edward,
The bolts on my 71's seat track mounts have an odd looking headmark.
Its a large capital B with a very small capital H in it's center. There are also 3 hash marks, 1 each at 3, 6, and 9 o'clock. All 8 are the same.
They don't have pointed ends.
So another possibility for you to look for.
Regards,
Alan

Alan, starting in 69 cars I have seen your B/H (not to be mistaken for the typical B&H) bolt.

"typical" 67-72 seat mount bolts are flat tip w/a flat washer

Rich

[Edward J.]

Re: 72 Seat Mounting Bolts

Guys Thanks For The Responses, I Guess There Are A Mixture Of Head Markings, Are All The Bolts Indexed Heads W/ Captured Washers , Flat Tips. A Few Of You Didnt Specify.and One More Question The Bolts On Seat Tracks Rear Closest To Left And Right Doors Nuts And Bolts, Mine Seem To Be In 72 Or Maybe There Theres Something Missing.

[Alan S.]

Re: 72 Seat Mounting Bolts

Hi Edward,
On my 71 the outer rear track bolt has a plate with a tapped hole riveted to the under body. I believe you can see it in this picture. I'd 'think' 72 would be the same?
Regards,
Alan

[Edward J.]

Re: 72 Seat Mounting Bolts

Alan,
Ill Look This Weekend To See If Theres A Brackets Riveted To The Floor , Maybe Its Stripped Out On Both Sides, It Think Its Strange That Both Outter Bolts Would Be The Same.

[Alan S.]

Re: 72 Seat Mounting Bolts

Hi Edward,
The bolts and plates get pretty rusty in that location and the bolts are easy to twist off. Perhaps that's what happened in your car's past.
Regards,
Alan

[Steven G.]

Re: 72 Seat Mounting Bolts

Yes Edward, definately all have indexed heads with captured washers. Steve

[Bryan M.]

Re: 72 Seat Mounting Bolts

Yes Edward, definately all have indexed heads with captured washers. Steve

Here is a pic of what the seat mounting bolts on my 72 look like.

[Edward J.]

Re: 72 Seat Mounting Bolts

Alan,
I Looked At My Outer Seat Brackets Today There Still There But No Threads Left, Stripped Out, I Guess Ill Put Some Heil Coils In To Repair.

[Alan S.]

Re: 72 Seat Mounting Bolts

Hi Edward,
The brackets are reproduced pretty nicely. I don't know if that interests you or not. The heli-coil is more straight forward.
Regards,
Alan