Hello everyone. This is my 1st post on this board. I have had an Aimtech No-Tap Weaver-Style Base on a Model 629-1 for several years now. I have decided to remove it since I don't really use the scope anymore. The problem is back in the day I was young and stupid and stripped the screw hole. The base came with 2 different rear screws, one of which was bigger than the original screw. I used the larger screw and it has held fine but they are allen head screws that are not flush. In fact they stand out quite a bit.

My question is does anyone know what size the larger screw would be so I can order a replacement?

Probably 6x48.

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Gunsmithing since 1961