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**jbondo** · 06-23-2014, 06:36 PM

ok, looks like it just has a single one. Best wishes for your search. Let us know if you get it all working!

Not a Number · 06-23-2014, 07:21 PM

Microtools has 1.7 × 10 mm flat head screws. You can cut them down.

Micro-Tools Europe Tools | Screw, Flat Head 1.7x10 Black Zn | buy online

stargazer · 06-24-2014, 12:11 AM

Originally posted by Not a Number

Microtools has 1.7 × 10 mm flat head screws. You can cut them down.

Micro-Tools Europe Tools | Screw, Flat Head 1.7x10 Black Zn | buy online

I think ill be ordering my tools and screws from them. Can anyone tell me if the moody screw removers on their site will be thin enough? thanks
Micro-Tools Europe Tools | Moody Screw Extractor Set | buy online
Micro-Tools Europe Tools | Drill Bit Set, 12 Piece | buy online
Micro-Tools Europe Tools | Left Hand Drill Bit 0.8mm | buy online
Micro-Tools Europe Tools | Drill Bit, Twist 0.80mm | buy online
Micro-Tools Europe Tools | Drill Bit #72 Pkg of 10 | buy online
Micro-Tools Europe Tools | Drill Bit #78 Pkg of 10 | buy online
Micro-Tools Europe Tools | Screw, Flat Head 1.7x10 Black Zn | buy online

Any suggestions on the tools to get? Thank you all.

Not a Number · 06-25-2014, 07:51 AM

I suppose you can contact Moody Tools. They may be able to advise if the extractor will work on the 1.7mm screw and what size drill to use.

It must have taken a fairly significant amount of force to shear those screws. Are there any other signs of damage?

stargazer · 06-25-2014, 11:02 AM

I ordered the tools that i think would bee appropriated for the job. Its true , i think the lens was dropped during transportation. I bought this lens from an American (CA too!) seller and i think that the damage was done during the transportation to France. The lens suffered damage to the M-42 thread mount and to the focus block ( the screws in the focus block where the first physical obstacle that force produced by the fall encountered and it suffered the result of this encounter, they where neatly decapitated !!!) apart from that, the lens is in good condition. I think that the excellent building construction of the takumars allowed this lens to survive and not be broken in a thousand pieces! It is not the only takumar that i possess and i can assure you the fact that its built of metal it was always a big plus!! wheight?? well it gives you a reason to work does biceps and triceps! I am used to carry heavy lens has my current birding lens is a tair-3S and you have too move a lot in the woods to find the subjects in more unusual situations (feeding, disputing territory, etc) i also use my telephoto lens to do astrophotography but for that i use a tripod !

Not a Number · 06-25-2014, 12:04 PM

There is something to be said about all metal construction of lenses. I also like the way the lenses with all metal focus rings look.

Doh! I forgot the link to Moody Tools contact page:

Contact Moody Tools

stargazer · 06-25-2014, 12:56 PM

Thanks for the link but i already made the order, of what i think would be the most indicated tools for the job.

stargazer · 07-03-2014, 12:35 AM

----update----

Moody screw extractor didn't worked. Screws where so damaged that the only way i could extract them was by drilling them out. Managed to remove all broken screws. The task now is to find the screw that fits the diaphragm socket, if i can't (i managed to find the same type of screw in another lens but a few mm's shorter....) i will hack a solution to allow the operation of the aperture ring ... at the moment i leave the part n° 19 off, which allows me the use of a screw driver or small metal pick to open and close the diaphragm. The disassembling of the lens is quite easy and straight forward and a big plus is that, if you need to clean the 2nd and 3rd element the lens separates easily from the focus block ( a simple unscrew of the front train and thats it!) that's how i managed to clean the fungus that was in the 2nd element, in 2mns.

If anyone has any ideas where i could find the diaphragm screw/pin the info would be most appreciated, thanks.

**jbondo** · 07-03-2014, 09:31 AM

Glad to hear you're making progress.

dforth617 · 11-05-2015, 08:55 PM

Suggestions for finding a couple of 5M L7x5 screw for repairing my 500mm?

stargazer · 11-20-2015, 09:10 AM

I suggest you use some common screws that fit the hole and head room and just cut off the extra length on the screw. That's how i did with the broken screws on my lens. Good luck!

dforth617 · 11-20-2015, 01:35 PM

Found a size that worked. Company called MetricScrews.us. Lens back together and ready to use!

Don

stargazer · 11-24-2015, 04:13 AM

Have fun with your TANKUMAR ! I personally have two of them ! Don't forget to post your photos here ! Good shooting!

Kiewit · 10-02-2016, 06:44 PM

Has any one removed the last section of the lens. There are three screws and a screw in sight peace. Not sure how to pull apart. Just need to clean and glue a baffle.

**niceshot** · 06-13-2017, 02:06 PM

Nice find, this thread

11-05-2015, 08:55 PM	#25
dforth617 New Member Join Date: Nov 2013 Location: Eureka, Ca. Posts: 9	screw for takumar 500mm?? Suggestions for finding a couple of 5M L7x5 screw for repairing my 500mm?

11-20-2015, 01:35 PM	#27
dforth617 New Member Join Date: Nov 2013 Location: Eureka, Ca. Posts: 9	found a fit! Found a size that worked. Company called MetricScrews.us. Lens back together and ready to use! Don

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06-23-2014, 06:36 PM	#16
jbondo Loyal Site Supportaxian Join Date: Sep 2013 Location: Texas Photos: Albums Posts: 503	ok, looks like it just has a single one. Best wishes for your search. Let us know if you get it all working!

06-23-2014, 07:21 PM	#17
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	Microtools has 1.7 × 10 mm flat head screws. You can cut them down. Micro-Tools Europe Tools \| Screw, Flat Head 1.7x10 Black Zn \| buy online

06-24-2014, 12:11 AM	#18
stargazer Senior Member Join Date: May 2013 Location: France, Annoisin-chatelans Photos: Albums Posts: 109 Original Poster	Originally posted by Not a Number Microtools has 1.7 × 10 mm flat head screws. You can cut them down. Micro-Tools Europe Tools \| Screw, Flat Head 1.7x10 Black Zn \| buy online I think ill be ordering my tools and screws from them. Can anyone tell me if the moody screw removers on their site will be thin enough? thanks Micro-Tools Europe Tools \| Moody Screw Extractor Set \| buy online Micro-Tools Europe Tools \| Drill Bit Set, 12 Piece \| buy online Micro-Tools Europe Tools \| Left Hand Drill Bit 0.8mm \| buy online Micro-Tools Europe Tools \| Drill Bit, Twist 0.80mm \| buy online Micro-Tools Europe Tools \| Drill Bit #72 Pkg of 10 \| buy online Micro-Tools Europe Tools \| Drill Bit #78 Pkg of 10 \| buy online Micro-Tools Europe Tools \| Screw, Flat Head 1.7x10 Black Zn \| buy online Any suggestions on the tools to get? Thank you all.

06-25-2014, 07:51 AM	#19
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	I suppose you can contact Moody Tools. They may be able to advise if the extractor will work on the 1.7mm screw and what size drill to use. It must have taken a fairly significant amount of force to shear those screws. Are there any other signs of damage?

06-25-2014, 11:02 AM	#20
stargazer Senior Member Join Date: May 2013 Location: France, Annoisin-chatelans Photos: Albums Posts: 109 Original Poster	I ordered the tools that i think would bee appropriated for the job. Its true , i think the lens was dropped during transportation. I bought this lens from an American (CA too!) seller and i think that the damage was done during the transportation to France. The lens suffered damage to the M-42 thread mount and to the focus block ( the screws in the focus block where the first physical obstacle that force produced by the fall encountered and it suffered the result of this encounter, they where neatly decapitated !!!) apart from that, the lens is in good condition. I think that the excellent building construction of the takumars allowed this lens to survive and not be broken in a thousand pieces! It is not the only takumar that i possess and i can assure you the fact that its built of metal it was always a big plus!! wheight?? well it gives you a reason to work does biceps and triceps! I am used to carry heavy lens has my current birding lens is a tair-3S and you have too move a lot in the woods to find the subjects in more unusual situations (feeding, disputing territory, etc) i also use my telephoto lens to do astrophotography but for that i use a tripod !

06-25-2014, 12:04 PM	#21
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	There is something to be said about all metal construction of lenses. I also like the way the lenses with all metal focus rings look. Doh! I forgot the link to Moody Tools contact page: Contact Moody Tools

06-25-2014, 12:56 PM	#22
stargazer Senior Member Join Date: May 2013 Location: France, Annoisin-chatelans Photos: Albums Posts: 109 Original Poster	Thanks for the link but i already made the order, of what i think would be the most indicated tools for the job.

07-03-2014, 12:35 AM	#23
stargazer Senior Member Join Date: May 2013 Location: France, Annoisin-chatelans Photos: Albums Posts: 109 Original Poster	----update---- Moody screw extractor didn't worked. Screws where so damaged that the only way i could extract them was by drilling them out. Managed to remove all broken screws. The task now is to find the screw that fits the diaphragm socket, if i can't (i managed to find the same type of screw in another lens but a few mm's shorter....) i will hack a solution to allow the operation of the aperture ring ... at the moment i leave the part n° 19 off, which allows me the use of a screw driver or small metal pick to open and close the diaphragm. The disassembling of the lens is quite easy and straight forward and a big plus is that, if you need to clean the 2nd and 3rd element the lens separates easily from the focus block ( a simple unscrew of the front train and thats it!) that's how i managed to clean the fungus that was in the 2nd element, in 2mns. If anyone has any ideas where i could find the diaphragm screw/pin the info would be most appreciated, thanks.

07-03-2014, 09:31 AM	#24
jbondo Loyal Site Supportaxian Join Date: Sep 2013 Location: Texas Photos: Albums Posts: 503	Glad to hear you're making progress.

11-20-2015, 09:10 AM	#26
stargazer Senior Member Join Date: May 2013 Location: France, Annoisin-chatelans Photos: Albums Posts: 109 Original Poster	I suggest you use some common screws that fit the hole and head room and just cut off the extra length on the screw. That's how i did with the broken screws on my lens. Good luck!

11-24-2015, 04:13 AM	#28
stargazer Senior Member Join Date: May 2013 Location: France, Annoisin-chatelans Photos: Albums Posts: 109 Original Poster	Have fun with your TANKUMAR ! I personally have two of them ! Don't forget to post your photos here ! Good shooting!

10-02-2016, 06:44 PM	#29
Kiewit New Member Join Date: Oct 2016 Posts: 1	Has any one removed the last section of the lens. There are three screws and a screw in sight peace. Not sure how to pull apart. Just need to clean and glue a baffle.

06-13-2017, 02:06 PM	#30
niceshot Site Supporter Join Date: Mar 2014 Location: NY Photos: Gallery Posts: 1,565	Nice find, this thread

Repair guide for Takumar 500mm 4.5

Win a Pentax Limited Lens: Raffle Now Live!