870 Rifle Sight Screw question

[DZ]

Does anyone happen to know the thread pitch on the screw that holds the rear sight in place (the one you use to adjust elevation)?

I stripped the hex head and need to replace it. Its a #3 socket cap screw, but I dont know the thread pitch and my feeler gages go down to 40 and its either a 48 or a 56.

Its a long shot, but does anyone know? My eyes were too tired to try and count this ittybitty threads last night.

 

[tdt91]

I believe Midway sells them. I remember seeing them somewhere recently

 

[DZ]

Thanks, I'll give it a look. I'm ordering a bunch of other stuff from McMaster today and was just going to order a pack from them.