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#1 |
Registered User
Join Date: Jan 2013
Location: Calgary Alberta
Posts: 1,166
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Re: inside door handles falling off
Why would you want to tap them to 1/4" when !2-20 screws are surely available?
Modify them if you have to according to the description above in post #19. |
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#2 |
Moderator
![]() ![]() Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: inside door handles falling off
Post #19... 10-24?, 10-32?, 1/4-20 etc. What is written in #19 can you please explain it to us? I'm curious as to what it means.
__________________
Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
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#3 |
It's Better With Nitro
Join Date: Apr 2008
Location: Chino Hills, CA
Posts: 2,261
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Re: inside door handles falling off
More surface area, the better for clamping (threads and set screw end).
__________________
1963 C-10: Deluxe-optioned cab, shortbed, fleetside Pontiac 462 ci, Kauffman D-Port alum. heads 4L80E, narrowed sheetmetal Ford 9-inch Tubular front and rear suspension Custom 6-piston front disc and 4-piston rear disc brakes |
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#4 |
Registered User
Join Date: Jan 2013
Location: Calgary Alberta
Posts: 1,166
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Re: inside door handles falling off
OK I guess 12-20 is not a common size. From what I have just looked up #12 thread pitch would normally be 24 or 28 threads per inch. I think I would try running a 12-24 tap through before going to 1/4"
So that tells me that if I measured the screw correctly at 12 -20 it must have been a special screw made by GM. Does nobody supply these original type door handle screws? It seems wasteful to drill and tap good original handles for lack of the correct screw. |
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#5 | |
Registered User
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,590
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Re: inside door handles falling off
Quote:
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#6 |
Registered User
Join Date: Jan 2013
Location: Calgary Alberta
Posts: 1,166
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Re: inside door handles falling off
Attempting set screw picture
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#7 |
Moderator
![]() ![]() Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: inside door handles falling off
Their 1/4"-20 threads. Slotted Dog Point Set Screw. I think we'd be looking a long time to find exact new ones though. You can find allen head dog points though.
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Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? Last edited by The Rocknrod; 02-03-2017 at 06:43 PM. |
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#8 |
Registered User
Join Date: Jan 2013
Location: Calgary Alberta
Posts: 1,166
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Re: inside door handles falling off
My mistake then if they really are 1/4 - 20. I should have thought to put a caliper on the threads. Then it would be easy to modify something 1/4 - 20 to work. Not a total waste of time, we have pictures.
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#9 |
Registered User
Join Date: Jan 2013
Location: Calgary Alberta
Posts: 1,166
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Re: inside door handles falling off
1/4 - 20 they are. I measured the major thread diameter at .243" so close enough. The head diameter was .252" and the the little nub at the end was .150" diameter. Time to eat crow. I must have been having a seniors moment.
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#10 |
Moderator
![]() ![]() Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: inside door handles falling off
Looks like Jim Carter has them:
http://www.oldchevytrucks.com/cart/p...21&i=9741||||| Item Number: WI121
__________________
Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
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#11 |
Moderator
![]() ![]() Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: inside door handles falling off
Wow. I pulled the set screws for the window cranks (counter part) and door handles in hopes to place in there dog point allen set screws instead. With a thread gauge I went through everything I had and couldn't find a match, some kind of strange made up BS.
The originals I have are 1/4-20 but very old and worn. Maybe I can tap them, what do you think?
__________________
Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
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#12 |
Senior Member
![]() Join Date: Feb 2014
Location: new smyrna beach fl / 29 palms cal
Posts: 1,727
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Re: inside door handles falling off
My originals were rough so I went with the aftermarket after picking them up off the floor several times I used a little Loctite
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Hand made A/C vent manifolds for 64-66 trucks adapts any aftermarket A/C to OEM vent |
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#13 |
Moderator
![]() ![]() Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: inside door handles falling off
Yes, I just installed them with blue loctite, so we shall see.
__________________
Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
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#14 |
Registered User
Join Date: Sep 2018
Location: Yreka, CA
Posts: 43
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Re: inside door handles falling off
If anyone has any lead shot (smaller), I put some in the handles and put the set screw in and tighten. I use it on my reloading dies and pretty much anything with a set screw.....
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#15 |
Registered User
Join Date: Nov 2008
Location: kannapolis, nc
Posts: 516
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Re: inside door handles falling off
How long does that last? never thought about lead
__________________
2000 c3500 utility bed 7.4l 5sp manual old body style. Cab and chassis 1964 GMC K10 383cu in/sm465/twin stick np205 1965 Chevy C60 |
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#16 |
Registered User
Join Date: Sep 2018
Location: Yreka, CA
Posts: 43
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Re: inside door handles falling off
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