Screw size
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
10-24 are bumper cover mount screws. GM wasn't real big on fine threads except flywheels, balancers and stuff. phone cameras are pretty good. try to get a pic of female thread. you sure it is a machine and not sheet metal thread?
Race Director
Joined: Oct 2000
Posts: 12,679
Likes: 3,130
From: Shamong, NJ
The original driver's side mirror mount screw was a special 10-24 screw, with a #8 head, but any 10-24 machine screw with a countersunk head should work. The same screws were used for the rocker panels.
10-32's were used with the Well Nuts, used to install the passenger side mirrors.
10-32's were used with the Well Nuts, used to install the passenger side mirrors.
Last edited by gbvette62; Sep 24, 2019 at 08:39 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Melting Slicks
Joined: May 2006
Posts: 2,369
Likes: 103
From: Centerville Louisiana
Ok guys this is how it turned out I ran a 10 24 tap in front hole but it was to big for the second. They had a sheet metal screw holding it on with probably some kind of glue. I was able to run a 8 32 tap in and same size machine screw. I didn’t’ Want to get the drill around the fresh paint if possible. Thanks to all who replied.