type of machine screw

[RWebb]

I am trying to figure out what you call a machine screw or bolt that has a small protruding nipple on the end.

Something like the gray area drawn in below.




These are M5 Phillips head, but I can't figureou t how to look it up w/o a special name...

[JFairman]

This place may be of help.
http://www.metricbolt.com/

they're local for me and a fun place to visit if you like hardware.

if you put a couple few nuts on a similar longer screw you could chuck it up in a lathe or even a large drill and turn/grind/polish the end down so it has shank like that.

[jcge]

It's called a "dog point" (or "half dog point" if it's a bit shorter) As in "drive dog"

Usually associated with grub screws (and square head set screws)

Headed fasteners of this type are usually made for a specific application - so you'll probably have to machine an off-the-shelf screw to your own dimensions.

Good suggestion (above) to use nuts to hold while machining.

Here are a few leads
DIN 922 - Pan head screws with small head and dog point
DIN 924 - Oval head screws with dog point
DIN 925 - Flat head screws with dog point