Name that screw

[Prairie Dog]

OK TDRians, I need the collective wisdom of the forum to identify this screw. I believe it's a tamper screw from the 50's or 60's - maybe earlier. I collect old automotive test equip - battery chargers, etc, and need some of these. I know I'll have more luck finding some if I at least know what they're called. So far all I know is it's a no. 6 sheetmetal screw.

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Thanks in advance,
Scott

 

[BigPapa]

A better pic would probably help. That one is focused on the wrong thing.

 

[dieselshadow]

Those are called clutch head screws

 

[Prairie Dog]

Thanks everyone. That is definitely what they are but now I find I can only get them in #8 or #10 in a silver finish. Naturally, I need #6
At least I know what I'm looking for now!

Again, thanks for taking the time to post your answers.

Scott

 

[TFucili]

Have you tried McMaster-Carr?

 

[p-Bar]

It's a "clutch" screw

 

[Wayne M.]

I actually own a clutch head screw driver to deal with the secondary metering plates on Holley vacuum secondary 4 bbl carbs.

 

[p-Bar]

I have one I bought for something. Can't remember now

 

[DonFitzwater]

Clutch fasteners were popular in the metering blocks of Holley carbs as mentioned by Wayne. I get bits from the Snap-On dealer when needed as he always has them on the truck.

 

[Timd32]

That 57 Suburban I have uses a lot of those on the interior panels like the trans tunnel, its removable from what I recall, and some of the other panels inside.

Been around forever for sure.