Hourglass figure

[LordPsychon]

So I went to my local Ace Hardware yesterday and they had a series of USA made screwdrivers on discount for $2.99 and I came across a screwdriver type I had never seen before. The tip looked like an hourglass in cross-section and I've not encountered a screw type that this would fit. Any ideas what this driver is?

 

[gungatim]

clutch head. used for those stupid screws they used in mobile homes.

 

[LordPsychon]

Thanks! Google wasn't able to provide much help, figured the human touch would get the answer.

 

[Grigg]

Right, clutch head.
Used a fair amount on small screws and things on the 45-53 Chevy trucks I like, and I'm sure other years outside of that.

 

[Erampu]

<------There are a lot of them on this.

 

[gungatim]

Thanks! Google wasn't able to provide much help, figured the human touch would get the answer.

I only knew that because I bought one at Ace hardware years ago when I had a mobile home and every electric outlet, cabinet hinge, etc. used those. was told by the park owner what it was and where to get it...Still have it 25 yrs. later and haven't used it since'91

 

[beatcad]

used a lot on 50s chevy cars also.
mostly i recall on the rad support and behind the inst. cluster.

 

[unslow1]

Some Holley carbs use them internally.

 

[Mechanical Noise]

My 63 Ford 289 used them on the camshaft thrust plate.

 

[wantacoe]

Yep, had a mobile home when I was a youngster, they are everywhere, at least in the 70's.

 

[scissorman]

My 63 Ford 289 used them on the camshaft thrust plate.

Never seen them used there before but then again you do have that very rare (never made) 1963 289.

The first 289 was early 1965 and prior years was the 260.

 

[CatSplat]

Never seen them used there before but then again you do have that very rare (never made) 1963 289.

The first 289 was early 1965 and prior years was the 260.

That's not entirely true, the C-code and K-code 289s were introduced in 1963 in the Fairlane.

 

[Major Ramifications]

Some Holley carbs use them internally.

Yes, the 4160 series used them to secure the metering plate to the main body on the secondary side. Why? I don't know.