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Stop screws for a Kirk LP 47 replacement foot.


Durban, ZA
1479 posts

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jamesvoortman Silver Member Nikonian since 06th Sep 2004
Thu 06-Jun-13 04:33 PM

My second hand 500VR lens came with a Kirk LP47 replacement foot but no stop screws/pins. (This foot has the Arca-Swiss style grooves built-in so no adapter plate is required)

Due to using the lens with a (lightweight) D800 it balances fairly far back on the footplate and I can't use 1/4" grubscrews (setscrews)in the tripod holes as safety stops. I need to use the much smaller holes provided at the far ends of the plate.

Kirk enterprises sells these as an extra but is out of stock and their $1.25 cost will be more like $20 by the time it is posted to me in South Africa.

Can anybody advise what thread/length is required? I may be able to get something similar from a local bolt supplier although tried a few today and they were shaking their heads at the small size.

Alternatively - how feasible to drill and tap for M3 (metric 3mm) cap/allen screws which I can buy very easily in SA. I have the tools to do this. Obviously I will check the height of the screw head does not exceed the depth of the rebate in the mounting clamp.

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