Jump to content

Triangular section screwdriver / head attachment


KidKruger

Recommended Posts

Are you sure it's a screw and not a bolt or rod? The raised part doesn't look well defined enough to me to give good purchase to anything driverlike. The nearest I've got is a head with a bowtie-like projection, with clean vertical sides. Might the shape be an orientation indicator? Pliers?

PS Thought I'd found a hit with https://en.wikipedia.org/wiki/List_of_screw_drives#Tri-point-3, but they, probably predictably, have the pattern on the screw head in recess.

Link to comment
Share on other sites

I believe it's a screw Ian, the other 3x screws were regular Phillips head which were easy to remove. this one seems to be some kind of security-giving screw head. I don't know why they would machine the unit to have three screw heads and one bolt head, so I'm convinced this odd one is a screw. and yeah it's a sort of curved profile at the sides, which makes for imperfect purchase form a flat-sided triangular screw, even if I do find one the right size. all I want to do is shorten the frayed cable, it's a 5min job !
Link to comment
Share on other sites

So it was a TP3 screw, as in the WikiP article I mentioned? I did actually have a change of heart a couple of days ago, when I began to see the central Reuleaux triangle as a depressed area, as in the photo accompanying the article, even if it didn't seem particularly flat. But that percept disappeared, and I began seeing it as a raised 3-d object surrounded by a ditch outline. And today it's back as a depressed area, but definitely not with sharp orthogonal edges; in fact rather worn down. Is it another of your mudlarking finds?
Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

Home
Events
Sign In

Sign In



Or sign in with one of these services

Search
×
    Search In
×
×
  • Create New...