Early Hardtop Rear Clamp Screw Size

[tylerite3124]

Can someone tell me the size of the machine screws that attach the rear spring clamp to the early Alpine hardtop? Please see picture attached. Thanks in advance for sharing your expertise.

Rick

 

[hartmandm]

From the Parts Manual, the bracket looks like parts 202 & 203 in the diagram.



Looks like 1/4" UNF x 1/2" (28 tpi I assume)


Mike

 

[tylerite3124]

From the Parts Manual, the bracket looks like parts 202 & 203 in the diagram.

View attachment 28960

Looks like 1/4" UNF x 1/2" (28 tpi I assume)
View attachment 28961

Mike

Thanks for the help Mike. The manual doesn't provide the thread size. Do you know what it is offhand? I would guess 1/4" - 28.

Rick

 

[hartmandm]

It lists UNF, so for 1/4" it should be 28 tpi.

 

[hartmandm]

Thread checkers, like https://www.threadtoolsupply.com/sae-inch-thread-checker.html, are quite handy for verifying a size prior to purchasing the needed hardware. I admit to using these more often than I would have thought.

Mike

 

[tylerite3124]

Thread checkers, like https://www.threadtoolsupply.com/sae-inch-thread-checker.html, are quite handy for verifying a size prior to purchasing the needed hardware. I admit to using these more often than I would have thought.

Mike

Thanks again, Mike. I learned something today!
Rick