Miniature Metric Screws Needed

wewing · 08-02-2021, 06:08 PM

Anyone know of a good source for miniature metric machine screws? I am servicing a 50mm f1.4 Takumar and at some point someone used slotted head screws that have heads that are too large to attach the front filter ring.

**jatrax** · 08-02-2021, 06:24 PM

Amazon has listings for tons of hardware, but sorting through the inconsistent listings is a chore.

You could try McMaster-Carr, they have everything. But they also like to charge for it.

**othar** · 08-02-2021, 07:01 PM

If there is a watch maker close by you might be in luck there

wadge22 · 08-02-2021, 08:44 PM

Second the McMaster-Carr tip. The easy to navigate webpage helps you get the right thing, and you can trust that you're getting the quality required for the application the part was designed for. They don't tend to carry cheap junk.

Not a Number · 08-02-2021, 08:59 PM

M1.7 Screws : Metric Screws!, We have the screws you need!
Micro Fasteners

wewing · 08-03-2021, 04:40 PM

Thanks for the great leads!! Looks like Metricscrews.US has the best selection.
I measured the OD of the screws I have and they are .055 inch, so If I am looking at the chart I have, I need a 1.4mm screw, correct?

wadge22 · 08-03-2021, 05:23 PM

I can't tell you for sure what you need, and you would need to measure pitch to be really sure.
But yes, an M1.4 x .3 screw will measure .055 with calipers on the major diameter.

wewing · 08-03-2021, 05:56 PM

A company called Tabco Optical appears to have a good selection of small metric screws. The screws I need have a head diameter of 2.0mm, most of the suppliers listed have a good assortment but the smallest head diameter I can find in 2.4mm. Tabco optical has screws with 2.0mm heads

I may check my local optometrist to see if they can help me out.

wadge22 · 08-03-2021, 07:40 PM

I hope they can! And as someone else mentioned, a jeweler/watch repair might also have suchlike.
Grinding .5mm off of the OD of a tiny screw head would also probably be doable with home equipment, but I wouldn't want to have to do it!

wewing · 08-04-2021, 02:32 AM

Originally posted by wadge22

I hope they can! And as someone else mentioned, a jeweler/watch repair might also have suchlike.
Grinding .5mm off of the OD of a tiny screw head would also probably be doable with home equipment, but I wouldn't want to have to do it!

I will check my jeweler as well. An old establishment that will certainly have a "junk" screw drawer.

It would be difficult indeed to grind material off that tiny of a screw. I'm not sure I have a chuck of any kind that will hold a 1.4mm shaft, and even then it would be difficult.

08-02-2021, 06:08 PM	#1
wewing New Member Join Date: Jul 2021 Posts: 7	Miniature Metric Screws Needed Anyone know of a good source for miniature metric machine screws? I am servicing a 50mm f1.4 Takumar and at some point someone used slotted head screws that have heads that are too large to attach the front filter ring.

08-03-2021, 04:40 PM	#6
wewing New Member Join Date: Jul 2021 Posts: 7 Original Poster	Thanks for the great leads!! Looks like Metricscrews.US has the best selection. I measured the OD of the screws I have and they are .055 inch, so If I am looking at the chart I have, I need a 1.4mm screw, correct? Last edited by wewing; 08-03-2021 at 05:13 PM.

08-03-2021, 05:56 PM	#8
wewing New Member Join Date: Jul 2021 Posts: 7 Original Poster	A company called Tabco Optical appears to have a good selection of small metric screws. The screws I need have a head diameter of 2.0mm, most of the suppliers listed have a good assortment but the smallest head diameter I can find in 2.4mm. Tabco optical has screws with 2.0mm heads I may check my local optometrist to see if they can help me out. Last edited by wewing; 08-03-2021 at 06:01 PM.

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08-02-2021, 06:24 PM	#2
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Amazon has listings for tons of hardware, but sorting through the inconsistent listings is a chore. You could try McMaster-Carr, they have everything. But they also like to charge for it.

08-02-2021, 07:01 PM	#3
othar Site Supporter Join Date: May 2014 Location: Linz Photos: Albums Posts: 3,098	If there is a watch maker close by you might be in luck there

08-02-2021, 08:44 PM	#4
wadge22 Veteran Member Join Date: Jun 2021 Location: NE Ohio Photos: Albums Posts: 897	Second the McMaster-Carr tip. The easy to navigate webpage helps you get the right thing, and you can trust that you're getting the quality required for the application the part was designed for. They don't tend to carry cheap junk.

08-02-2021, 08:59 PM	#5
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	M1.7 Screws : Metric Screws!, We have the screws you need! Micro Fasteners

08-03-2021, 05:23 PM	#7
wadge22 Veteran Member Join Date: Jun 2021 Location: NE Ohio Photos: Albums Posts: 897	I can't tell you for sure what you need, and you would need to measure pitch to be really sure. But yes, an M1.4 x .3 screw will measure .055 with calipers on the major diameter.

08-03-2021, 07:40 PM	#9
wadge22 Veteran Member Join Date: Jun 2021 Location: NE Ohio Photos: Albums Posts: 897	I hope they can! And as someone else mentioned, a jeweler/watch repair might also have suchlike. Grinding .5mm off of the OD of a tiny screw head would also probably be doable with home equipment, but I wouldn't want to have to do it!

08-04-2021, 02:32 AM	#10
wewing New Member Join Date: Jul 2021 Posts: 7 Original Poster	Originally posted by wadge22 I hope they can! And as someone else mentioned, a jeweler/watch repair might also have suchlike. Grinding .5mm off of the OD of a tiny screw head would also probably be doable with home equipment, but I wouldn't want to have to do it! I will check my jeweler as well. An old establishment that will certainly have a "junk" screw drawer. It would be difficult indeed to grind material off that tiny of a screw. I'm not sure I have a chuck of any kind that will hold a 1.4mm shaft, and even then it would be difficult.