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Page Armory » Gunsmithing
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Site News 2024's Favorite CCW? | PSA Micro Dagger
Archived [ARCHIVED THREAD] - Fastfire screw thread pitch?
Posted: 3/12/2015 7:23:33 AM EDT
Does anyone know the thread pitch for the Fastfire III's mounting screws?  I have used 2 different thread gages and can't seem to come up with anything that matches.  My closest guess is M3.5x.6.

Link Posted: 3/12/2015 9:01:10 AM EDT
[#1]
Quoted:
Does anyone know the thread pitch for the Fastfire III's mounting screws?  I have used 2 different thread gages and can't seem to come up with anything that matches.  My closest guess is M3.5x.6.
View Quote


#6 x 48

ETA: Link to installation pdf. If you click it the pdf will download automatically.
Link Posted: 3/12/2015 9:33:42 AM EDT
[#2]
Thanks...

Link Posted: 3/23/2015 11:12:31 PM EDT
[#3]
I had the slide milled on my M&P 9L before I asked this question of myself  No 6-48 taps in my box.  But I did have 6-40 tap and flathead cap screws.  A little weaker minor diameter than 48 tpi but the pins take the force and it's been holding up just fine.
Archived [ARCHIVED THREAD] - Fastfire screw thread pitch?
Page Armory » Gunsmithing
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