Fotodiox M42x1mm Silver Metal Body Cap camera accessory

M42 x1mm screw-mount body cap

The Fotodiox silver metal body cap fits any camera with an M42 x1mm screw mount. It replaces a lost or damaged original cap and shields the mirror box and sensor from dust, moisture and scratches when the camera is stored or transported. The anodised aluminium construction resists wear and won't deform like plastic alternatives. A precise thread ensures a secure, light-tight seal every time.

Collectors and users of vintage M42 cameras

Photographers who own Pentax, Chinon, Cosina, Mamiya, Yashica, Fujica, Petri, Miranda or similar M42 mount bodies gain a durable, uniform cap for their kit. The metal finish matches classic camera aesthetics and withstands repeated removal. Buyers needing a bayonet-mount cap, a rear lens cap or automatic aperture coupling should look at a different accessory, as this cap provides only a mechanical light seal for the camera body.

M42 x1mm thread specification

The single specification that determines fit is the M42 x1mm screw thread. If the camera body uses this exact thread pitch and diameter, the cap will engage fully and protect the internals. Any other mount type — bayonet, breech-lock or a different screw pitch — will not accept this cap. No electronic communication or aperture linkage is present, so the cap functions purely as a physical barrier.