41.6mm to SM2 male thread adapter for shutters

This adapter allows using some shutters on focusing helicoids with M65x1 thread. Take note that this adapter has no female thread - it has just a round bore. So, your shutter should have retaining nut to mount it.

• Bore diameter - 41.6 mm
• Male thread - SM2 (2.035″ - 40 tpi)
• Flange thickness - 5 mm
• Max diameter - 58 mm
• Weight - 16 g

Suitable shutter(s):

• Compur #1;
• Copal #1;
• Prontor #1.

The adapter is made of anodized aluminium.