Rivstud

[stuvy]

I had a prototype made from an engineering shop and the chap used flush rivstuds

these are male version of rivnuts

how can I make these at home?
Fly press?
Hydraulic ram/press?

I will get some pictures later

 

[Ashley Burton]

Can't you get ones that spot weld?

 

[Wallace]

I'll ask a friend of mine, we used something on the switchgear where I worked.

 

[stuvy]

Can't you get ones that spot weld?

you can do

inlet thing is the face or the rear of the stud needs to be flush

 

[Ashley Burton]

the rear of the stud needs to be flush

Surely it would be when spot welded compared to those rivstud's?

 

[stuvy]

Surely it would be when spot welded compared to those rivstud's?

it’s to go in a 3mm flat piece of mild steel

the ones I have virtually disappeared when I ran a DA sander over them and once primer and painted they completely disappear

 

[Ashley Burton]

it’s to go in a 3mm flat piece of mild steel

the ones I have virtually disappeared when I ran a DA sander over them and once primer and painted they completely disappear

Are you talking about rivstud's?

If so I can't really understand how sanding them smooth let's them hold the sheet you're attaching them to? As normally a rivet needs the expanded part to hold it tight & firm?

 

[Wallace]

Have a look at Pem Fasteners or clinch fasteners. The name of the ones we used escapes me at the moment.

 

[500e]

https://www.pemnet.com/fastening_products/pdf/fhdata.pdf

 

[mpats]

Are you talking about rivstud's?

If so I can't really understand how sanding them smooth let's them hold the sheet you're attaching them to? As normally a rivet needs the expanded part to hold it tight & firm?

Countersunk rivets are flush with the surface. Could do the same with a rivstud maybe?

 

[Ashley Burton]

Countersunk rivets are flush with the surface. Could do the same with a rivstud maybe?

Never seen them before! Do they have the same holding strength?

 

[mpats]

Never seen them before! Do they have the same holding strength?

As long as you have the material thickness to cut the correct countersink. On thinner stuff you have to dimple, but then it's not usually critical structure.

 

[hotponyshoes]

Use a rivitnut then loctite a stud into it?

 

[stuvy]

Are you talking about rivstud's?

If so I can't really understand how sanding them smooth let's them hold the sheet you're attaching them to? As normally a rivet needs the expanded part to hold it tight & firm?

rivstud as in male

I will upload pictures tomorrow as I had a day from hell earlier

 

[500e]

FH-2
PennEngineering •
www.pemnet.com
SELF-CLINCHING STUDS AND PINS
PEM® self-clinching studs are easily installed by placing them in properly sized holes in sheets and squeezing into
place with any standard press:
•
Install permanently in aluminum, steel or stainless steel in sheets as thin as .020” / 0.51 mm.
•
High torque-out and pushout resistances.
Flush-head studs
Types FH/FHA/FHS/FHP/FH4
PAGE 5
Flush, low-displacement head studs
Types FHL/FHLS
PAGE 7
Thin sheet studs
Types TFH/TFHS
PAGE 8
Heavy-duty studs
Types HFH/HFHS/HFHB
PAGE 9
Heavy-duty studs for thin sheets
Types HFE/THFE
PAGE 10
HFE
™
/THFE
™
(heavy-duty) studs
Provides
maximum pull through in sheets as thin as
.031” / 0.8 mm -
PAGE 10

 

[Wallace]

I'll ask a friend of mine, we used something on the switchgear where I worked.

I asked and the reply was Fred and Wilma, Fred the stud and Wilma the clinch nut! After much threatening Pemsert was the reply.