Panel mount for 6mm laser diode mod

Hi, I need to panel mount a 6mm laser mod through a 9mm wide panel, 2mm

thick. I’ve had no luck looking for anything even remotely related.

All the nice panel mount stuff is for 3mm or 5mm lased diodes, not 6mm

laser modules. So I took apart my Bosch GLM-15 laser measure. They

have a laser, a lens plate, then this plastic cap. It doesn’t appear

to collimate. it’s just clear cap in line with the lasser and lens but

not touching, with 6mm inner dia, and 4mm length, and a slightly

flanged head. It looks similar to this(but clear)http://www.mocap.com/plastic-caps-flanged-metric.html

It’s perfect for what I need. But I can’t locate one

anywhere and don’t know what else to call it. Plastic cap, plastic

lens, non collimating lens, clear lens, etc.etc… Can you please help

me find out what it’s called, and where I can get some? Surely that

stupid little plastic cap isn’t proprietary…?

Check McMaster-Carr