A screw loose (and two missing) Nikkor-Q.C 135/2.8 Auto

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philipus

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Hello everyone

My copy of this lens lacks two of the three screws on the silver ring. Is it possible to find such screws?

I'm not sure if all three have the same dimensions, but I've included a photo of the one remaining, which is the first one to the right of the aperture indicator dot). I estimate it to be 0,5cm in length.

I'd like to use this lens more but I'm afraid to lose the last screw as even if I tighten it, it gradually loosens over time due to the ring's movements.

Thank you very much in advance
Philip

HipstamaticPhoto-748869533.450434.jpg
HipstamaticPhoto-748871280.423559.jpg
 

Mamiya_Repair

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The original Nikon screws on this lens are 1.4mm x 4mm flathead. But, the flathead is a fairly small diameter, not likely to find such a small head screw, you would have to modify a screw head to fit flush. If you don't want to do that, you could use a panhead screw with a little longer length, maybe 4.5mm but the screw would not fit flush.
 

abruzzi

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if you don't want it loosening, put a tiny dab of blue loctite on the threads before threading it in.
 

Bushcat

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McMaster-Carr might be a good starting point, if you don't want to pop in to a camera shop or similar. They're friendly emailers.
 
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philipus

philipus

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Thank you very much for your replies. I will try to find a suitable screw and will get some blue loctite too.
cheers
Philip

The original Nikon screws on this lens are 1.4mm x 4mm flathead. But, the flathead is a fairly small diameter, not likely to find such a small head screw, you would have to modify a screw head to fit flush. If you don't want to do that, you could use a panhead screw with a little longer length, maybe 4.5mm but the screw would not fit flush.

if you don't want it loosening, put a tiny dab of blue loctite on the threads before threading it in.

McMaster-Carr might be a good starting point, if you don't want to pop in to a camera shop or similar. They're friendly emailers.
 

MattKing

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Thread moved to the Camera Repairs sub-forum, because that is what its about :smile:
 
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