The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Correct screw for base of column seal retainer

**pjmoreland** · 12-21-2021, 05:03 AM

My truck has the original screws in this location. The threaded portion is 1/2" long, and the head takes a 5/16" socket. The thread minor diameter is .142" and major diameter is .188". The thread pitch is 16 TPI.

One of the screws that secure my fuse panel to the firewall wouldn't tighten up. I had my wife hold a heavy block of steel against one side of the firewall while I hit the other side of the hole with a hammer a few times to flatten the metal back out. The screw tightens up just fine now.

12-21-2021, 05:03 AM	#2
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 6,253	Re: Correct screw for base of column seal retainer My truck has the original screws in this location. The threaded portion is 1/2" long, and the head takes a 5/16" socket. The thread minor diameter is .142" and major diameter is .188". The thread pitch is 16 TPI. One of the screws that secure my fuse panel to the firewall wouldn't tighten up. I had my wife hold a heavy block of steel against one side of the firewall while I hit the other side of the hole with a hammer a few times to flatten the metal back out. The screw tightens up just fine now. Attached Images Last edited by pjmoreland; 12-22-2021 at 12:22 AM.