Seatbelt Anchor Bolt

[Machspeed]

Hey friends, I've got a seatbelt anchor bolt that is going to have to be drilled out and as such, am in need of one. The bolt is 7/16 20, see pics for other info. Anybody have one they can shed or perhaps hook me up to with a source? Thanks!    

 

[Gary Lewis]

John - Your bolt doesn't match what the documentation shows.  If you go to Documentation/Interior/Seat Belts I think that you'll see that you should have 386582 and 386274.  I have one each extra, which you are welcome to.

And here's the entry from the Standard & Misc. Parts catalog for those bolts.  I am confident that the entry for 386582 is wrong so have marked it up, as shown.



And here are my two extra bolts with dimensions.

[Gary Lewis]

Ok, I think there is a lot of error in all of this.  And part of it is mine.  

But, in my defense, I was believing the MPC.  Silly boy!  John was talking about the bolts that hold the shoulder belt reel to the B-pillar and the bottom of the belt to the floor of the cab near the door.  Not the seatbelts to the floor behind the seat.  I misunderstood that.

However, if you look at this illustration from the MPC it clearly shows that the upper and lower bolts are to be a 386582., which have a shoulder on them to allow the seatbelts to swivel.  But John pointed out to me that the ones for the belt on the B-pillar do not have that shoulder.  So I went looking and, sure enough, the ones in the baggies with the reels that came off Dad's truck don't have the shoulder.

Given that I'm sure the MPC is wrong.  But can any of you confirm that your truck has bolts without shoulders for the upper and lower attachments on the shoulder harness?




And, there were apparently two styles.  In the pic below the bolt on top matches the ones John has given the pics he's sent me.  And it is now his, although he just doesn't have it yet.  But the bottom bolt is from Dad's truck, and I have three others just like it.

[kramttocs]

I can confirm that in both my 80 and 86 - no shoulders on those.

80 has the cylinder(?) head, 86 has the taper head.  

[Gary Lewis]

Thanks, Scott!  I need to update the illustrations then.  Ford has them wrong, for sure.

As for those bolt heads, it looks like Ford changed suppliers and the early ones had the "cylinder" head with the later ones the tapered head.  But I'm not sure what the part number is.

The snippet below shows the bolts that are supposedly used.  We already know where 386274 and 386582 are used, so might it be 386392?  I can say that if it is then the MPC is wrong again as the bolts in the pic above are 1 3/8" instead of 2 1/8" as shown below.



I think 386392 is probably the bolt used, but can't prove it.  On the one hand, the MPC says that it is used on the E-Series vans as well as the F-Series trucks.  And yet there is only one illustration in the whole of the MPC that shows it - the E-series van one shown below.

So, is this the bolt used on our pickups?  Does anyone know of a van they can pull that bolt from to see if it is the one in the pic above?

[Machspeed]

Thanks Gary! That seat belt anchor bolt was in there. I think it may have been cross threaded and then with all the years of corrosion it wouldn't budge. I knew I was in trouble when the heat wouldn't even unseat it. An impact was it's ultimate demise before drilling and tapping it out.
.

[85lebaront2]

I guess I need to save this chart and inventory my seat belt bolts (at least the Ford ones).

[85lebaront2]

I can confirm that the reels on Darth (all 4 of them) have shoulderless bolts. They have to or the reels would move around. FWIW, the crew cabs have the mounting location for rear outboard shoulder belts, lower holes have rubber plugs as they go through to underneath, upper holes aren't tapped, but the bulge in the corner trim is there with a plug in it where the belt will pass through.

[Gary Lewis]

Ok, it looks like it is unanimous.  The MPC is wrong, several times.  But can someone confirm that the bolt is 1 3/8" below the head?  John, that's what your pic that you texted to me shows, right?

If so, I'm going to assume we know the part number and edit the table as well as the illustrations.

[Machspeed]

Gary Lewis wrote

Ok, it looks like it is unanimous.  The MPC is wrong, several times.  But can someone confirm that the bolt is 1 3/8" below the head?  John, that's what your pic that you texted to me shows, right?

If so, I'm going to assume we know the part number and edit the table as well as the illustrations.

Yes, that's what it appears to be in the picture I took. I'll measure it again when I get out there later.

[Gary Lewis]

I think I'm going to stay in and watch is SNOW today.  Let it snow, let it snow, let it snow!

That will give me a chance to edit those illustrations and work a bit more on the 3G conversion stuff.

So, if it isn't 1 3/8" please let me know.

[85lebaront2]

You can keep it out there please, it's bad enough my Seabee buddy in MS sent his weather prediction for sub-freezing temperatures (he's on the Gulf Coast).

I just sent you via email measurements of the 8 different seat belt bolts I have, 4 Ford and 4 Mopar.

[Gary Lewis]

I got the email, thanks.  As for the weather, I was taught to share so will send this your way.  We are up to 6F, but headed to negative numbers tonight.

[ArdWrknTrk]

I'm pretty sure these seat belt bolts are self tapping.
At least it seems that way.
Not sure what the back of the catalogue says.

[Gary Lewis]

Yup:  

[Gary Lewis]

Bill - You said the reels on Darth are held with shoulderless bolts.  But what about the bolts into the floor?  And, do you agree with the revisions below?




Also, what's the difference between the above illustration and the one below?  Both supposedly are for a crewcab.  I'm confused!

[85lebaront2]

The outer front bolts were shoulderless top and bottom, the inboard bolts, I
believe had shoulders (they should match Big Blue). Rear belts were like
the top illustration, note it shows 1983/ F350 crew cab where the lower
shows 1980/ Super Cab with forward facing rear seat (it has a very narrow
cushion) and says crew cab. Maybe Ford changed in 1983 along with all the
other detail changes.

Darth's original rear belt system is what the top illustration has except I
do not remember a shoulder bolt on the rear outboard retractors, they were
solid mounted with no movement. I found that since the back wall of the
crew cab is the same as the single cab, the holes and mount for the single
cab shoulder harnesses were there. I picked up an extra set of belts at
Pick-n-Pull and installed them.

Hope this helps. Current belt setup is the same as I described, except I
had the 1996 (bottom retractor location) belts stitched to my retractors so
I have the opal gray interior belts. Inboard ones were just pulled from the
1996 crew cab.

Bill

On Sun, Feb 14, 2021 at 2:56 PM Gary Lewis [via Bullnose Enthusiasts Forum]
<[e-mail]> wrote:

> Bill - You said the reels on Darth are held with shoulderless bolts.  But
> what about the bolts into the floor?  And, do you agree with the revisions
> below?
>
>
>
>
> Also, what's the difference between the above illustration and the one
> below?  Both supposedly are for a crewcab.  I'm confused!
>
> Gary, AKA "Gary fellow": Profile
> <http://forum.garysgaragemahal.com/Gary-Lewis-tp149.html>
>
> *Dad's* <http://forum.garysgaragemahal.com/Dad-s-Truck-Build-tp7104.html>:
> '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M"
> w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
> *Blue:* 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a
> 3.5L EB & Max Tow
> *Big Blue:* <http://forum.garysgaragemahal.com/Big-Blue-td234.html> 1985
> F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker in front & 10.25 Spicer/Trutrac
> in back, & EEC-V MAF/SEFI
>
>
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[Machspeed]

Bolt measured with vernier caliper from bottom of head to end of threaded surface was 1.350".... 

[salans7]

Gary, I don't know why after all this time you're still under the assumption that the MPC can be trusted as factual information, especially after I've griped for years about how Ford conveniently left out the 1980-only shift boots, but swears that E0TZ-7277-A and E0TZ-7277-E are correct for a 1980 truck which came with the trim rings for the shift boots.

http://www.garysgaragemahal.com/#nabble-td37615

[Gary Lewis]

Shaun - You have me confused with Numberdummy, who seems to think the MPC is infallible.  I know there are errors galore in it.  My copy is marked up all over the place.  But it is far, far better than nothing.

John - Thanks for the measurement.

Bill - Thanks for that.  I'm still trying to get my head around what you said so I may have more questions.