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What screws for Holosun SCS Carry on a P365X???

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https://sigforum.com/eve/forums/a/tpc/f/430601935/m/4140079815

January 07, 2026, 07:05 PM
Black92LX
What screws for Holosun SCS Carry on a P365X???
Comes with a bunch of screws and the manual lists 3 screw options of the carry models.
Which ones do I use and how do I know which they are since the little bags aren’t labeled??


————————————————
The world's not perfect, but it's not that bad.
If we got each other, and that's all we have.
I will be your brother, and I'll hold your hand.
You should know I'll be there for you!
January 07, 2026, 09:33 PM
Chowser
I had the same issue. I was buying screws from calculated kinetics for my staccato so i bought some for my p365 for the eps carry and used it on my scs carry.

i think they were m4 x 10mm?

https://www.calculatedkinetics...riant=40169725001793

I would just see which included holosun ones fit and are deep enough.



Not minority enough!
January 08, 2026, 04:51 AM
Black92LX
According to their description:
quote:
M3 X 9MM- Holosun EPS/EPS Carry on our DOGTAG for Glock MOS (Full size models) and M&P to EPS. These will also work for the EPS/EPS Carry on P365 series except the FUSE and 365 Legion (look at the M4 X 10MM listing).



————————————————
The world's not perfect, but it's not that bad.
If we got each other, and that's all we have.
I will be your brother, and I'll hold your hand.
You should know I'll be there for you!
January 08, 2026, 06:24 AM
4MUL8R
If you are planning to visit home depot with your pistol and wave it around in the fastener aisle while you are trying the various size metric fasteners to make sure you choose the right one, please let us know before you go. We need to send the SF film crew and get our bail bond fund replenished.


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Trying to simplify my life...
January 08, 2026, 07:52 PM
Black92LX
^^^^^^^^^^
Not that exciting around here. Was initially going to meet my buddy who I am mounting it for tomorrow for breakfast and just slap the optic on there at the booth but he dropped it off to me today.
Would be nice if Holosun labeled the screw bags. I just pulled the two screws holding in the plate and compared the screws that came with the SCS and used the ones that were the closest in length and thread pitch.
Worked just fine.

Seems like a nice little optic.


————————————————
The world's not perfect, but it's not that bad.
If we got each other, and that's all we have.
I will be your brother, and I'll hold your hand.
You should know I'll be there for you!
January 09, 2026, 10:39 AM
patw
When I mounted my Holosun 407K X2 on my P365X, out of the ones in the Holosun package, I mounted the smaller diameter and short screws. The tallest/thinner screws worked in my S&W Shield X and the other shorter/fatter screws I have no idea.
January 09, 2026, 04:12 PM
10-7 leo
I had one of Holosun's screws break off in the slide, while torquing down. Gunsmith got it out for about $25. He said he has removed a fair number of their screws because of very soft chinese steel. Use caution!



Sic Semper Tyrannis
If you beat your swords into plowshares, you will become farmers for those who didn't!
Political Correctness is fascism pretending to be Manners-George Carlin
January 09, 2026, 04:45 PM
Black92LX
^^^^^^^^^^^^^^^
I had them bugger up real bad trying to take an optic off one time.
Ended up taking it to the smith and it cost me $30 to remove 2 screws.


————————————————
The world's not perfect, but it's not that bad.
If we got each other, and that's all we have.
I will be your brother, and I'll hold your hand.
You should know I'll be there for you!
January 09, 2026, 06:58 PM
DanH
I've heard Holosun screws are either soft steel or good steel that's been over hardened to the point they're brittle.

Also, once you get an answer on the screw size, McMaster-Carr is a great place online to get the screws you need or go to the Cyelee Optics website and get one of their screw packs for about $25 that has just about everything in it.