1914 DWM Artllery

[chromeed]

Rear Sight Adjustment Tool
This is from an old post of mine but I added Phone and web site info for McMaster Carr

The screw is a Drilled Spanner head (slang) (Snake-eye) also called Security screws or Tamper resistant screws. They have been used on Elevators for many years. I use them on my gun box lock I got them at McMaster Carr along with a bit. See Pic#2
When I got my Artillery I checked with them but they had no Metric drivers or Spanner screws so I paid $40 for the little brass tool.
After I got my sight adjustment screw working I realized that the screw is the exact same size as a 4-40 Spanner Head screw. (0.094" c/c holes) ***McMaster Carr Atlanta Phone # (404) 346-7000 Internet www.mcmaster.com *** bit price $1.75 or $8.25 for the whole scredriver See Pic#1.
As I see it I can justify paying $38.25 more and waiting a week because the round pins in the brass one are less likely to deform the edges of the holes in the screw and the pins are exactly the same depth as the holes in the screw so the brass flat of the driver rests on top of the screw. (less potential for damage) Also because I played $40 for the tool I was careful not to force it. Most important is that My $1300 Artillary is not damaged and the sight is now adjustable.
If your screw is not stuck the modern tool is OK (It is lower cost) but it sure does not look as neat as the wooden handle one I saw with a price of $500.00 or my little $40.00 brass one. Pic#3


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Ed Reimbold I Need:
For my 1936 P-08 Mag #5800 will trade Mag Al Stamped Blue #6859 k Straight Eagle 655 & #3502 n+St Eagle 63
For my 1917 Artillary Wood Mag #9220 I have #3392 f +