Security screw name?

[Al Borland]

Anyone Know what these security screws are called? Some sort of tapered, three-notched security screw. Looking for a bit because they are about 3 inches long and taking them out with a hammer and punch takes a while...

 

[laser3kw]

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tri-groove rounded head screw

 

[joel63]

Anyone Know what these security screws are called? Some sort of tapered, three-notched security screw. Looking for a bit because they are about 3 inches long and taking them out with a hammer and punch takes a while...

Used be listed in the Snap-on catalog as Tri Wing.

 

[Metallitubby]

Used be listed in the Snap-on catalog as Tri Wing.

Coincidental that it looks like your avatar photo.

 

[3baygarage]

This must be too old.

 

[ArcticGabe]

I wonder if something like this would work...

 

[ZRX61]

Used be listed in the Snap-on catalog as Tri Wing.

Snap On got that one wrong...

 

[cvairwerks]

Tri-Groove Security Bolt......

 

[Lassen Forge]

Tri-wing screws. You can actually get bits for them. Check with "ifixit" dot com... they have all these bizarre "security" screw bits in their tool kits (their stock in trade is helping people fix **** that manufacturers would rather not repair but buy a new one), I was attempting to fix an unrepairable chinesium coffee pot but needed the same beast to get the bottom apart to (ha ha ha) change the heating element and they had them.

 

[kbs2244]

when you put it back together use a normal screw




'

 

[Metal-Marc]

Inmates would heat one end of a toothbrush and stick it to those screw to make themselves a "special bit" needed to unscrew these.