C2:67 Clutch Boot Screw

[Gerard F.]

The 67 AIM shows it as a 9418359 screw to hold the clutch boot to the firewall. I lost mine. Anyone know the size type and finish on this screw. I assume there is only one screw at the top, even though the boot has 3 ears for screws. Is there something else that holds it in place along the bottom.

Thanks,

Jerry Fuccillo
#42179

[steve wallach]

Re: C2:67 Clutch Boot Screw

My 67 appears to have the original boot still in place. It appears to have 3 screws and is glued with the black foam type glue to seal it in place.

Good luck,

Steve

[William O.]

Re: C2:67 Clutch Boot Screw

I looked ans could not find my spare fasteners for the boot, but I purchase mine at Long Island.

Regards,

[Joe L.]

Re: C2:67 Clutch Boot Screw

Jerry-----

The screw was hex head and of 1/4-20 X 1/2". I believe that it was phosphate-finished. I don't know the typical headmarking or if it was of untrimmed (indented) or trimmed (non-indented) head configuration.

[Michael H.]

Re: C2:67 Clutch Boot Screw

Joe,

I have cross recess oval head in the 66. Not sure of the thread but I believe they are self tapping. I don't think a 1/4"-20 would have been used for this app. If I get a few minutes, I'll remove one and check.

[Dale S.]

Re: C2:67 Clutch Boot Screw

Jerry, Dale Schafer here. We both have close 1967 vin. numbers. I just pulled one of the three screws out of my original clutch rod boot. The thread part is 1/2 inch long and it is 1/4 inch acrooss the threads. The head is 5/16 wide and a phillips head. It is shinny but not chrome. It looks like a regular machine screw. Joe L. is right on for what is in my March 30 1967 coupe. Dale 505 296 5180

[Dale S.]

Re: C2:67 Clutch Boot Screw

Jerry, you will have 3 screws exactly like mine mailed to you in the A.M. Dale

[Michael H.]

Re: C2:67 Clutch Boot Screw

Dale,

If the screw that you removed is an original from your 67, then the fastener must have changed from 66. Here's a pic of one that I just removed from my car. Not even close to 1/4". I know the part number for the boot didn't change between 66 and 67 so I don't understand how a 1/4" dia screw could have been used. Interesting. I'll see if the part number Joe provided is the same for 66.

[Dale S.]

Re: C2:67 Clutch Boot Screw

Michael, I typed 1/4" but my note said 1/8". (the widest part across the threads is between 3/16" and a 1/4" . My screw looks like yours except from the picture it is a little longer. 1/2 inch in length not counting the head.(sorry about the typo.)Either would work as you only see the head. Dale

[Bill Stephenson]

Re: C2:67 Clutch Boot Screw

-------One thing I am sure of is that a 1/4-20 machine-screw bolt would not be correct. The screw may be a bit longer as used on a 67 as is stated but the screw in Jans 66 is identical to the pic Mike provided........Bill S

[Michael H.]

Re: C2:67 Clutch Boot Screw

Dale,

Mine is .160 for the dia of the threaded portion, roughly 1/16" smaller than yours if yours is around 7/32". (between 3/16' and 1/4") The length of the threaded portion is 5/16", as the diameter of the head.

The part number in the 66 AIM is the same one that Jerry mentioned in his post, 9418359.

The head config on this one is an oval with cross recess, not hex. I suppse different suppliers may have supplied these and that may explain the different head style and size but I doubt any were much larger than 5/16". That was the hex head size used for 63-65.

The install torque spec for this fastener was only 10 to 14 INCH lbs so I see no reason a 1/4" dia screw would ever have been used.

Will be interesting to hear from others on this. Probably a few different head styles.

[Dale S.]

Re: C2:67 Clutch Boot Screw

Michael, As I said before mine looks in the picture the same as yours except it is a little longer. I took a nickle out and laid mine next to it in front of your picture. My email address is dale0248@comcast.net. Send me your address and I will mail you one also. Dale

[Joe L.]

Re: C2:67 Clutch Boot Screw

Bill-----

I have no reference for the part number. That fastner was a PRODUCTION-only piece. However, other GM parts information I have said that the screw was a 1/4-20 X 1/2". Apparently, that's not correct.

[Michael H.]

Re: C2:67 Clutch Boot Screw

Thanks Dale. Email info is on the way.

[Michael H.]

Re: C2:67 Clutch Boot Screw

Thanks Joe. If I remember correctly, I tried to research that part number several years ago also, but came to the same dead end that you did. I agree, probably the majority of assy line fasteners were never listed in the service publications for resale to the public. Makes it difficult to research the facts. I suppose there's really no better information than we have right here when several people with reasonably un cars can provide information on what REALLY happened at the St Louis assy plant.