HELP> Banana Plug Adapter (F) for Threaded Binder Posts - Test Instruments - Page 1
Forum section: electronics / testgear

author: Steve Wayne
author_rank: Contributor
timestamp: May 06, 2015, 09:11:14 pm
content: Does anyone know where to get Banana Plug Adapters (Female) for Threaded Binder Posts, such as those pictured in this image? And/or what they are referred to as? .... sorry ‘bout the double post. Mahalo.

author: Fraser
author_rank: Super Contributor
timestamp: May 06, 2015, 09:18:03 pm
content: They are called 4mm spade adapters and are common for use on 4mm test leads. I will see if I can find them for sale for you.I have several sets myself.Aurora

author: Electro Fan
author_rank: Super Contributor
timestamp: May 06, 2015, 09:19:52 pm
content: http://www.caltestelectronics.com/ctitem/productskitsplugs-dmm-probe-coaxial-adapter-kits-kits/CT2553

author: Fraser
author_rank: Super Contributor
timestamp: May 06, 2015, 09:22:15 pm
content: Pomona sells them:http://pomonaelectronics.com/index.php?i=prodsub&parent=HWARE&cat=HWAREADAPT&getDetails=Aurora

author: Lightages
author_rank: Unknown
timestamp: May 06, 2015, 09:42:41 pm
content: Also from our friend Franky, AKA iloveelectronics, here on the forum:http://www.ebay.com/itm/7-2mm-Spade-Connectors-Fork-Terminals-for-4mm-Banana-Plugs-1-Pair-Red-Black-/201036308297http://www.ebay.com/itm/4mm-Spade-Connectors-Fork-Terminals-for-4mm-Banana-Plugs-1-Pair-Red-Black-/200987760101

author: Steve Wayne
author_rank: Contributor
timestamp: May 06, 2015, 09:43:07 pm
content: Thanks. I'll keep the Spade Lug Adapter in mind. But, what I was really looking for was something that threaded directly on to the instrument’s posts, and is equipped with female banana sockets. Thanks again. You guys rock! … and such fast responses.

author: Fraser
author_rank: Super Contributor
timestamp: May 06, 2015, 09:46:03 pm
content: A quick thought.... have you tried unscrewing the caps on those binding posts ? Sometimes the post is actually a 4mm tube for connection of 4mm plugs.Aurora

author: Steve Wayne
author_rank: Contributor
timestamp: May 06, 2015, 09:50:12 pm
content: The posts are merely 5.75 mm (diameter) studs with 10 point (metric) threads.

author: Fraser
author_rank: Super Contributor
timestamp: May 06, 2015, 09:53:03 pm
content: Regarding 4mm adapters that screw directly onto the posts.....nope, never seen anything like that BUT when I need an adapter that is not made, I make my own from available parts.In this case the hard part will be finding prethreaded tubes to screw over the posts. You may find a suitable diameter brass tube in a model shop that will take a tap to add the thread inside. Brass is easily soldered so you can then solder a 4mm socket into the brass tube.Alternatively:It is an easy task to create such an adapter in brass if you have access to a lathe and some brass bar. Do you know anyone with a lathe who could spin up such an adapter for you ? Cover each adapter with a layer of appropriately coloured heat-shrink tube and they will look very professional.Edit: Look around for brass M6 threaded sleeves and knurl nuts like these:http://www.ebay.com/itm/QTY20-Brass-Knurl-Nuts-M6-12mm-L-8mm-OD-Metric-Threaded-/171470566582?pt=LH_DefaultDomain_0&hash=item27ec7134b6They have the required internal thread and are 12mm long.Then solder either a 4mm socket to it or find some 4mm internal diameter brass tube (model shop) and use that as the socket.http://www.ebay.com/itm/2PCS-Plating-Gold-4mm-Binding-Post-for-Speakers-4mm-Banana-plug-Socket-/141554499056?pt=LH_DefaultDomain_0&hash=item20f54e3df0http://www.ebay.com/itm/2Pcs-4mm-silicone-insulated-Banana-female-Jack-socket-Plug-connector-Copper-/151361067143?pt=LH_DefaultDomain_0&hash=item233dd29887http://www.ebay.com/itm/10-Black-4mm-banana-socket-For-4mm-Banana-Plug-Free-Shipping-/110985589437?pt=LH_DefaultDomain_0&hash=item19d741b2bdhttp://www.ebay.com/itm/10-Red-4mm-banana-socket-For-4mm-Banana-Plug-Free-Shipping-/110977245370?pt=LH_DefaultDomain_0&hash=item19d6c260bahttp://www.ebay.com/itm/30pcs-Banana-Jack-For-4mm-Banana-Plug-Red-Black-/160917985144?pt=LH_DefaultDomain_0&hash=item2577759778Aurora

author: Fraser
author_rank: Super Contributor
timestamp: May 06, 2015, 10:19:01 pm
content: These look like a possible solution....very neatThey look like they can handle some decent current as well.http://www.amazon.com/Spade-Connector-Binding-Banana-Speaker/dp/B00K86KMIQIf the large diameter knobs prevent the adapters use....find some M6 nuts + flat washer and use them instead of the knobs.Aurora

author: Steve Wayne
author_rank: Contributor
timestamp: May 08, 2015, 06:27:37 am
content: Yes Aurora, these look like the best, simplest solution at this point. Thanks for all your suggestions everyone. Your detailed help isgreatlyappreciated. I'm certainly surprised there wasn't a readily available, common adapter for this. Mahalo nui loa !