Identify the Swedish screw (and where can I source it?)

[oranjeboom]

So I've started installing my staircase only to find I am one wooden screw short. Supplier of the staircase kit was from Sweden and that was a few years ago. Was hoping to find a quick UK solution to source the screw from. The screw joins secures the balustrade to the main post at the top of the stairs. It's all pre-drilled and therefore has a specific helical screw size and pattern that the screw gets tightened into, so I can't just use any helical size.

 

I've tried doing an image search with few accurate results. What specialist wood fixing businesses are there I can try? I suspect I'll have to go back to the Swedish supplier....

 

[MPH243]

https://www.screw-express.com/screw-self-drilling-large-round-head-hexagon-recess/30203-124561-self-drilling-screw-confirmat-large-round-head-hexagon-recess-7x70-zinc-plated-3663072018877.html?_gl=1*eo8rws*_up*MQ..*_gs*MQ..&gclid=CjwKCAjwobnGBhBNEiwAu2mpFH1Cxg8DJ39ODahMXPc09z93K2CbJyhyqht5d4lmcayjISVIeQezaRoCvdwQAvD_BwE&gbraid=0AAAAApFB4C3JbUGttmEI7biA054VR7cNB#/79-conditionnement-1_unit

 

Is this what you want, I only guessed at the diameter so hopefully its close?

[ETC]

IKEA?

[SteamyTea]

It is a bolt, not a screw.

[FuerteStu]

I thought the difference between a bolt and a screw was it's intended cavity... 

 

From the flat end, and pan head im guessing it has a specific depth locking point, but it doesn't look like a standard M5, M6 or M8 thread and goes into piloted timber therefore a screw. 

2 hours ago, SteamyTea said:

It is a bolt, not a screw.

 

[JohnMo]

2 hours ago, SteamyTea said:

It is a bolt, not a screw.

Yes, it isn't fully threaded it has a plain shank section, so technically a bolt.

[FuerteStu]

1 minute ago, JohnMo said:

Yes, it isn't fully threaded it has a plain shank section, so technically a bolt.

Screws can have a shank. 

 

And lots do. To prevent lifting when fixing multiple materials

[JohnMo]

1 minute ago, FuerteStu said:

therefore a screw.

Not always, really depends what industry you are discussing, as many industries or even manufacturers describe bolts and screws to be different things although talking about exactly the same thing. The meaning changes between countries.

 

When I went through my aviation training I was given very specific training on what a bolt and screw were and then in the oil and gas industry the terms were mixed and not very specific.

 

A write up here

https://www.accu.co.uk/p/131-difference-between-screws-and-bolts

 

[FuerteStu]

Regardless of semantics

 

I would contact the manufacturer.. Most will happily supply extra fixings without questions

[Alan Ambrose]

I can’t believe that @Pocster had passed this one up.

[Pocster]

8 hours ago, FuerteStu said:

thought the difference between a bolt and a screw was it's intended cavity... 

So true , so true …

[FuerteStu]

7 hours ago, Pocster said:

So true , so true …

We all know you bolt right after the screw. 

[SteamyTea]

Nut Washers and Bolts 

 

Eats Shoots and Leaves 

 

Tits like coconuts 

 

 

No help in getting the right bit, but the shops are shut now.

[garrymartin]

Almost certainly a RAMPA screw (not bolt 😉), though I'm not sure what specific type. It's a German brand, but is often used in Swedish (and other countries) staircase manufacturing.

 

https://www.rampa.com/eu/en/RAMPA-STAIRCASE-SCREWS-TYPE-TKH/3490900010100

https://www.junoindustries.eu/en/products/rampa/screws-with-metrical-thread/rampa-staircase-screws-type-tkm.html

 

Maybe give RAMPA a call or send them an email with the photos? If you do, measure the head diameter, and the diameter of the screw, and if there is writing around the top (possibly the screw type), tell them what it says.

 

RAMPA GmbH & Co. KG
Call us: +49 4155 8141-0
E-mail: mail@rampa.com

[oranjeboom]

Haha....the board of experts never fails! Bunch of screw-heads!! Thanks for all the responses on my bolt/screw issue!

 

On 20/09/2025 at 18:24, MPH243 said:

https://www.screw-express.com/screw-self-drilling-large-round-head-hexagon-recess/30203-124561-self-drilling-screw-confirmat-large-round-head-hexagon-recess-7x70-zinc-plated-3663072018877.html?_gl=1*eo8rws*_up*MQ..*_gs*MQ..&gclid=CjwKCAjwobnGBhBNEiwAu2mpFH1Cxg8DJ39ODahMXPc09z93K2CbJyhyqht5d4lmcayjISVIeQezaRoCvdwQAvD_BwE&gbraid=0AAAAApFB4C3JbUGttmEI7biA054VR7cNB#/79-conditionnement-1_unit

 

Is this what you want, I only guessed at the diameter so hopefully its close?

Very close indeed!  I'll contact them and see what they can do! Thanks very much!

 

On 20/09/2025 at 20:55, ETC said:

IKEA?

 

Will need a part number to order or a visit to them to show what I need...but yeah, had not thought about that little Ikea outfit...

 

19 hours ago, garrymartin said:

Almost certainly a RAMPA screw (not bolt 😉), though I'm not sure what specific type. It's a German brand, but is often used in Swedish (and other countries) staircase manufacturing.

 

https://www.rampa.com/eu/en/RAMPA-STAIRCASE-SCREWS-TYPE-TKH/3490900010100

https://www.junoindustries.eu/en/products/rampa/screws-with-metrical-thread/rampa-staircase-screws-type-tkm.html

 

Maybe give RAMPA a call or send them an email with the photos? If you do, measure the head diameter, and the diameter of the screw, and if there is writing around the top (possibly the screw type), tell them what it says.

 

RAMPA GmbH & Co. KG
Call us: +49 4155 8141-0
E-mail: mail@rampa.com

 

Ahhh....perfect! That looks like the one.... will try them if all UK options dry up!