What type of OEM electrical screw is this?

[Bullrunner99]

It is 1/4 inch in diameter. What type of screw is this and what driver is required to remove it? Thank you much.

 

[3DDave]

Looks like a candidate to become a straight slotted head after a visit from the thin cutoff wheel fairy.

 

[TugboatEng]

It's likely some type of t-groove or tri-groove screw.

https://www.losspreventionfasteners.com/store/products/t-groove-tamper-proof-bolts/

 

[3DDave]

I thought so at first, but the tri-groove have grooves down the sides of a cone which don't meet in the middle. If a tri-groove socket works, a Dremel will work faster.

Probably a competitor who didn't get a toe hold on the market and is gone or such a narrow specialty use that few others use it.

 

[Comcokid]

A quick visit to McMaster.com shows it most resembles a "Tri-Wing® Rounded Head Screw for Sheet Metal".

 

[3DDave]

It does, but tri-wing® is notable in that the slots do not line up in the middle and the slots taper deep towards the center of the head. From

https://www.mcmaster.com/products/drivers/for-drive-style~tri-wing-/

one can see a tri-wing® drver would not engage this screw head.

 

[mrmontgom]

Are you sure it is a screw and not a swaged rivet?