Taperssection.com

Gear / Technical Help => Microphones & Setup => Topic started by: davepeck on August 02, 2012, 06:50:28 PM

Title: Double-sided 1/4"-20 screw - Does this exist?
Post by: davepeck on August 02, 2012, 06:50:28 PM
I'm looking for something like this:

http://www.bhphotovideo.com/c/product/546376-REG/Manfrotto_037_037_Reversible_Short_Stud.html

...but where both ends have the 1/4"-20 screw.

Coming up empty. Does something like this even exist?
Title: Re: Double-sided 1/4"-20 screw - Does this exist?
Post by: Gutbucket on August 02, 2012, 08:08:33 PM
Yep.  Besides epoxy, Loctite red is specifically designed for thread-locking nuts strongly, or you can forgo any 'thread glue' and simply jam-lock two or more nuts together with or without a lock-washer.  If you aren't into cutting and grinding the ends of all-thread rod yourself, good bolt/fastener supply places carry threaded studs in various sizes, pre-cut to about that length with nicely camfered ends so the threads work well and look clean.  Though it probably won't mater for your use, they typicaly have a female hex fitting in one end, designed for installing them in threaded holes with an allen wrench.
Title: Re: Double-sided 1/4"-20 screw - Does this exist?
Post by: mfrench on August 03, 2012, 12:37:28 AM
thread rod ferrule connector, and thread rod/bolts w/ jam nuts?

(http://www.chatsworth.com/uploadedImages/Files/10697-001_Threaded%20Rod%20Coupling%20Kit.JPG)

(http://www.falconworkshop.co.uk/Connector_description.jpg)
Title: Re: Double-sided 1/4"-20 screw - Does this exist?
Post by: Brian Skalinder on August 03, 2012, 01:46:36 AM
Is there a reason you couldn't use said stud with a female 3/8"-16 to male 1/4"-20 thread adapter (http://www.bhphotovideo.com/c/product/546532-REG/Manfrotto_015_015_Female_3_8_to.html)?
Title: Re: Double-sided 1/4"-20 screw - Does this exist?
Post by: SmokinJoe on August 03, 2012, 12:27:27 PM
I have to ask the dumb question... what would you use it for??  I can't imagine.  If you don't need it to fit into a superclamp, then yes, the threaded rod is ideal.  If you need it to hook into a superclamp, then probably not.

If it were me... having a welder and no patience... I'd weld a 1/4 bolt to a 3/8" nut and screw it onto the 3/8" stud.
Title: Re: Double-sided 1/4"-20 screw - Does this exist?
Post by: flipp on August 03, 2012, 12:39:19 PM
If you really need the stud and have to have 1/4x20 on each end you could always take the stud you linked to a machine shop and have them rethread the 3/8 to 1/4. Depending on the shop they may do it for nothing or could charge you more than any of the other options already mentioned.
Title: Re: Double-sided 1/4"-20 screw - Does this exist?
Post by: it-goes-to-eleven on August 03, 2012, 01:24:12 PM
If you really need the stud and have to have 1/4x20 on each end you could always take the stud you linked to a machine shop and have them rethread the 3/8 to 1/4. Depending on the shop they may do it for nothing or could charge you more than any of the other options already mentioned.

That would be a cut thread, and cut threads tend to be weak and prone to cracking at the root.  Especially in a smaller size like 1/4-20. Bolts and such are rolled threads; the material is displaced under extreme pressure to form the thread, not cut away.

Though I don't have a manfrotto example in front of me, so I can't say for certain whether the manfrotto stud threads are formed or cut.
Title: Re: Double-sided 1/4"-20 screw - Does this exist?
Post by: davepeck on August 03, 2012, 06:44:31 PM
Thanks everyone for the suggestions!

Is there a reason you couldn't use said stud with a female 3/8"-16 to male 1/4"-20 thread adapter (http://www.bhphotovideo.com/c/product/546532-REG/Manfrotto_015_015_Female_3_8_to.html)?

This is perfect. Didn't even think of it. Thanks!

To Joe's question - basically want to attach an M10 and a camera, without the added bulk of a grip mount, etc.