crating a nut for existing specific size bolt

harel_barak952

Hi. I'm pretty new to onshape. 
I'm looking to crate an m4 nut to a screw I alredy have. 
I saw some youtube about it but in every video there is the model of the hex screw already and they just subtracting the nut from the hex screw. 
i got a physical screw to crate a nut for. what do you need to change in the helix tab to make both function nice with each other?   
I also saw that there are different options to crate the helix pattern or size, like pitch and revolution, pitch and height, revolutions and height, height and turn angle... what should I pick for this job? 
thanks 

robert_scott_jr_

Like this?

https://cad.onshape.com/documents/e4222b04815e947a40236a20/w/a6f873bb568afb7d71cd27f0/e/987c5307349677c223a4e2f8

james_aguilar160

I would probably use the Hole tool. You can specify that the hole is tapped for an m4 screw. AFAICT OnShape doesn't render the threads, presumably to save rendering resources. That's fine, though, because it's very unlikely you own anything capable of producing the physical geometry of the tapped hole via the OnShape geometry. (You might own a CNC that can do tapping, but that wouldn't depend on the geometry of the part produced by OnShape. Instead, it would use your CAM program's tool changing instructions.)

rick_randall

harel_barak952

I'm a little confused, Are you -

1), going to make the nut yourself ?

2), just need a 3D model to use in an assembly ?

If it's 1), then use hole tool, so you can make a drawing with the thread callout (like james said).

If it's 2),  in your assembly, use "insert" command / "standard content" to insert a ready made M4 hex nut (but won't have 3D threads)

Note: 3D threads are a resource hog, and makes a mess of drawings - On-shape recommends that you avoid them, unless you have a specific reason, or need.

If it's not one of the above, explain more, we will try to help. Good luck

harel_barak952

rick_randall said:

harel_barak952

I'm a little confused, Are you -

1), going to make the nut yourself ?

2), just need a 3D model to use in an assembly ?

If it's 1), then use hole tool, so you can make a drawing with the thread callout (like james said).

If it's 2),  in your assembly, use "insert" command / "standard content" to insert a ready made M4 hex nut (but won't have 3D threads)

Note: 3D threads are a resource hog, and makes a mess of drawings - On-shape recommends that you avoid them, unless you have a specific reason, or need.

If it's not one of the above, explain more, we will try to help. Good luck

I want to crate and print a nut for the black screw in the picture, my qustion is how can I get it to be functional and match the screw size so you can screw the 2 parts together 

martin_kopplow

Print a nut with just a plain core hole and use a tab cutter when printed. That'll be more precise, given we are talking a tiny M4 bolt.

wayne_sauder

@harel_barak952

 Have you looked at this tool and played with the offset settings? 

https://cad.onshape.com/documents/5c0528b62c1fbb13a2a0e739/v/f86229e7f586f8517a2068a9/e/4e0b9c68b36eb2784e7e1aa8

 If you are printing it, trial and error may or may not work, depending on the printer's precision.
 The suggestions above are usually preferred, but if it's a one-off, you can always try.  

nick_papageorge073

Don’t print an M4 nut. Go to a hardware store and buy one. 

nick_papageorge073

Also any video suggesting to subtract the male thread from a solid to form a female thread doesn’t know what they are talking about. That’s not how threads are made.

If you must print threads, use one of the thread generating FS in Onshape. You can play around with the clearances in the FS to get a nice printed fit.