Anatomical Models
DC Motors
Light (Optics)
Lab Supplies
pH meters
pH Papers
Weights/ Masses

Please select from the list below or the links on the right. 

Banana Jack

A female banana connector (banana jack) is a single-wire (one conductor) electrical connector used for joining wires to equipment.

The banana jack that is usually mounted on equipment is a 4mm socket for banana plugs about 25 mm (one inch) long and 4 mm in diameter. An electric contact is made when the banana plug is inserted into the front hole of a banana jack. The back end of a banana jack has a contact plate for connection to the internal wiring of a device. The banana jacks usually have an insulating color-coded plastic cover.

Long Banana Jack

Long Banana Jack is a panel-mount socket for 4mm banana plugs with up to 20 mm (1 inch) long pin. Can be mounted on metal surfaces with up to 2 mm, and plastic or wood surfaces with up to 5 mm thickness. It mounts on a 8mm hole. The overall length is 25 mm. (Price and Availability)

Banana Jack, panel-mount, long, solderless

The socket hole in long banana plugs is closed at the bottom end. There is also a smaller hole on the back end. Internal wiring may be achieved in two different ways. You may insert the internal wire into the back hole and crimp it using a crimp tool or locking pliers. Alternatively you may place the wire between the two internal nuts and tighten the connection by turning the nuts so that the wire will be clamped between the two nuts.

Short Banana Jack

Short banana jack is a panel-mount socket for 4mm banana plugs with any length. Can be mounted on metal surfaces with up to 1 mm, and plastic or wood surfaces with up to 4 mm thickness. It mounts on a 8mm hole. The overall length is 13 mm. The face outer diameter is 11 mm.

Banana jack, panel mount, short, solder type

The socket hole in short banana plugs is open ended, that is why it can receive any length banana jack. Internal connection is made by soldering to a tin plated pierced lug terminal. (Price and Availability)

Available in red and black colors. Only sold in pairs or equal quantities of black and red. Click on the pictures to see the price and availability.

Distributors of scientific and educational products

Where to buy?

Most pictures are linked to the pricing and online store for fast and convenient ordering

Our products are available at the following online stores. For large orders please call in advance and verify the availability, wholesale discounts and shipping options. If you cannot find any product in the online store of your choice, please use the search option of the store or call (973)777-3113 for further assistance.


  All orders will be shipped from our warehouse in United States (USA). We ship worldwide to most countries including U.S., Canada, Australia, United Kingdom, New Zealand, Germany, France, Netherlands, and many other countries.

List of metals for science experiments


Miniature Light Bulb
Miniature Light Bulbs
Miniature Lamp holder
Miniature Lamp Holders

Metal lamp holders

Test Leads

Plastic Battery Holders

Buzzer, 3-V DC

Crystal Earphone
Simple Switch, Knife Switch
Simple Switch


Banana Jack
Banana Jacks
banana Plug
Banana Plugs
Binding Post
Binding Posts
Dynamo, Bicycle Generator
Dynamo, Generator
Electric Bell
Bells and Buzzers
Magnet Wire
Magnet Wire
Transformer Coil, Educational
Transformer Kit

Knife Switch with plastic screw connectors


UV Lamp/Fixture

Thermoelectric Cooler
Battery Holder, Metal, D Size
Metal Battery Holders

Thermoelectric Generator

Portable UV light (Blacklight)

Push Button Switches

Subminiature light bulbs

Plasma Ball

Educational Buzzer

Electric Bell

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