1515 buttons that mount with 1/4-20 hardware

[Handeman]

I found out that there will not be any Uni-Strut rails available at LDRS-41. I have a rocket that I want to launch that has Uni-Strut buttons mounted with 1/4-20 flat head screws.
I've been searching vendors for a set of 1515 buttons that will mount with 1/4-20 hardware. So far, I haven't found any or none that have replied back to me.

Does anyone know of a vendor or manufacture that makes 1515 buttons that mount with 1/4-20 hardware?

Thanks...

 

[OzHybrid]

If you look at the 1515 profile, the wall thickness on a delrin button would be too thin at the throat with a 1/4" clearance hole. You'd have to create something yourself. Maybe a bit of K&S tubing flared with a nylon washer top and bottom.
Your best bet would be to use a smaller bolt. Get a 1/4 bolt and drill and tap it 8-32 for a bit. Then cut that off and insert it into your existing threaded holder.

 

[Rocketjunkie]

My 1515 buttons have a 1/4" hole. The wall is thin and you have to be careful not to tighten them too far. Most 1515 buttons are sized for 1/4, not the 1010 buttons shown in the sketch (8-32 is a giveaway).

 

[OzHybrid]

1515 rail buttons are generally for 10-32 which is 3/16". Using an 8-32 was so you had some meat left in the 1/4 bolt to get a thread into it. Otherwise, you would have been trying to thread into the existing thread of the 1/4 bolt. Not the metal......
Whatever works for you. Obviously depends on what you're launching, what motor and how much strength you need.

 

[justforfun]

Check these out.

https://scpconcepts.com/rocketry/airfoil-rail-guides/
Roy

 

[Banzai88]

Easy day, these can be had in different hardware to suit your needs. I use these 1010 and 1515 rail buttons in 8-32 so that they're effectively interchangeable.

Here's the listing for 1515 in 1/4-20 for less than $5.

https://shop.fruitychutes.com/products/1515-rail-button-pair-of-2?_pos=2&_sid=186608895&_ss=r

 

[DragonRocketry]

I found out that there will not be any Uni-Strut rails available at LDRS-41. I have a rocket that I want to launch that has Uni-Strut buttons mounted with 1/4-20 flat head screws.
I've been searching vendors for a set of 1515 buttons that will mount with 1/4-20 hardware. So far, I haven't found any or none that have replied back to me.

Does anyone know of a vendor or manufacture that makes 1515 buttons that mount with 1/4-20 hardware?

Thanks...

If you do not find anyone that still makes them, contact me as I still have a couple sets that I bought 12+ years ago and can let a set go.

 

[Titan II]

1515 with 1/4 are common. Here is another vender....

http://binderdesign.com/store/Rail-Button-Supply-House.html

 

[Handeman]

Easy day, these can be had in different hardware to suit your needs. I use these 1010 and 1515 rail buttons in 8-32 so that they're effectively interchangeable.

Here's the listing for 1515 in 1/4-20 for less than $5.

https://shop.fruitychutes.com/products/1515-rail-button-pair-of-2?_pos=2&_sid=186608895&_ss=r

Thanks...

I'm actually trying two swap from Uni-Strut to 1515 since they won't have Uni-Strut available at LDRS 41 this year.

Fruity Chutes won't take orders for less than $25 and there really isn't anything else I need, so..... guess I'll keep looking.