Door sill screws
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I wonder what the factory installed, at least most of the time? I found mine with stainless #2 phillips panhead screws, #10 x 1/2".
But on-line they show stainless #2 phillips countersunk screws, #8 x 3/8". Apparently some of the NOS sill packages included the same. Tried some #8 countersunk screws (two sets, two sources) - sure they work, but it doesn't strike me right, because the heads on countersunk screws should sit flush with a surface. The sills aren't made for them, IMO, because the screw heads aren't flush. Perhaps just an observation. For what worth, my floor will take #8 even though it had #10. Sometimes I think old #10 are a pinch smaller than new :smoke: |
Re: Door sill screws
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Here are a couple pics of one of my original door sill screws. When I took them out they had a little rust on them so they have been soaking in Ballistol. They were a dull silver color before I soaked them. I believe they are the original screws because they all match, the sills were original, I am the third owner (father, son, then me) and the interior has never been repainted. I went through some pics I took when I first got the truck back in 2012 and I cropped a section of a pic that shows the finish of the screws back then.
I have a tool that measures machine screws but not sheet metal screws so here are the measurements I was able to get using a metal ruler. Head Width = 3/8" Thread Width (before taper) = 3/16" = #10 machine screw according to this chart https://www.boltdepot.com/fastener-i...-Diameter.aspx Length = hair over 3/8" Overall Length (top of head to tip of screw) = 1/2" |
Re: Door sill screws
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Re: Door sill screws
Mine are all pan head screws like in post #2.
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Re: Door sill screws
I've seen precious little evidence of the factory installing any stainless fasteners anywhere on this thing ;-)
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Re: Door sill screws
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Interesting, and thanks for the clarification Truckstar, good to know. This is what I pulled off my Chevy. Can't say the factory installed all of them, but some probably were. All pan head, #10
2 1/2" thread length, phosphate 4 1/2" thread length, stainless 2 3/8" thread length, stainless |
Re: Door sill screws
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Maybe I don't know what stainless is, but if I do models matter. I have a deluxe model, which has basically the same bling as a Cheyenne. Just for kicks and because I have the info. handy, screws for: Headlight bezels Rectangular tailgate bumpers Tail light bezel Washer nozzles Cowl panel's top Transmission pointer & dial Instrument panel perimeter Sport mirrors Vent window at front of window frame Door panels Arm rests Sun visor brackets Coat hanger Chrome bumpers License plate bracket (maybe) Lenses Perhaps window regulator, channel and vent window behind the door panel, though they seem to be clear zinc. Possible the door sills in standard trucks took phosphate screws and Deluxe & above took stainless? Hmm. Regardless, seems we've ruled out countersunk OVAL;) head screws for a door sill. Funny how that's what the vendors are selling, or most of. |
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