1/4" Jack - Switchcraft, Mono, shunt tip

1/4" Jack - Switchcraft, Mono, shunt tip

Switchcraft
Pictured: Standard (0.275")
Pictured: Standard (0.275")
Pictured: Standard (0.275")
Pictured: Standard (0.275")
Pictured: Standard (0.275")
Pictured: Standard (0.275")
Pictured: Long (0.375")
Pictured: Long (0.375")
Pictured: Long (0.375")
Pictured: Long (0.375")
Pictured: Long (0.375")
Pictured: Long (0.375")
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Pictured: Standard (0.275")Pictured: Standard (0.275")Pictured: Standard (0.275")Pictured: Long (0.375")Pictured: Long (0.375")Pictured: Long (0.375")
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Starting at: $2.75
In Stock

Switchcraft Type 12A Littel-Jax shorting type phone jack. The switched terminal is normally closed and is usually connected to ground to eliminate hum when unplugged. Includes nut and washer

  • Type 12A
  • 0.275" bushing length (standard) or 0.375" bushing length (long)
  • Mates with standard ¼" plugs and is available with 0.25" inside diameter bushing.
  • Mono 2-Conductor.
  • Includes nut and washer
  • Tip is shunt
Material
Mounting Bushing Nickel-plated copper alloy.
Insulation Rigid plastic
Springs Special copper alloy. Fine silver contacts
Sleeve Terminal Copper alloy
Hardware Supplied with one copper alloy nickel-plated hex nut, and one copper alloy nickel-plated washer

Switching Diagram for Long (0.375"):

Switching Diagram for Long (0.375")

Switching Diagram for Standard (0.275"):

Switching Diagram for Standard (0.275")
Part Numbers
Bushing LengthOur Part NumberUPC/EANSwitchcraft Part Number
Standard (0.275")W-SC-12A609722127080 12A
Long (0.375")W-SC-L12A609722127288 L12A
Chassis Hole DiameterLong (0.375") versionW-SC-L12A0.375 in.
Item Diameter0.75 in.
Item LengthLong (0.375") versionW-SC-L12A1.115 in.
Standard (0.275") versionW-SC-12A1.015 in.
Mounting Hole DiameterStandard (0.275") versionW-SC-12A0.0375 in.
Plug Diameter0.25 in.
Packaging Information
Packaging DimensionsLong (0.375") versionW-SC-L12A1.3 in. × 0.9 in. × 0.8 in.
Standard (0.275") versionW-SC-12A1.3 in. × 0.9 in. × 0.9 in.
Weight (Packaging)0.0243 lbs.
W-SC-L12A - Long (0.375") versionChassis Hole Diameter0.375 in.
Item Diameter0.75 in.
Item Length1.115 in.
Plug Diameter0.25 in.
W-SC-12A - Standard (0.275") versionItem Diameter0.75 in.
Item Length1.015 in.
Mounting Hole Diameter0.0375 in.
Plug Diameter0.25 in.

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Product Reviews

5.00 out of 5 based on 18 reviews
seb-ear-aaaaox.net - November 2nd, 2023
5 out of 5

The industry standard of excellence in American amp input jacks. The tip shorts to (usually ground) to eliminate noise on an unused open jack. Torque the small flat nuts up to approximately 30-35 inch pounds with a 1/4 inch torque wrench to be certain that the jack is tightened properly without stripping the threads out, deforming the nut or damaging the jack's bushing. New Fender amps usually have loose jacks. A small $60 10-150 inch pound torque wrench is a great tool to take your work to the next level. We also use a Sturtevant torque screwdriver, but those are $300. We don't break off screws, or strip threads though, and everything is properly tightened. Switchcraft jacks can take 35 inch pounds of torque, no problem. Cheaper jacks with zinc alloy bushings cannot take as much torque. Switchcraft is one of the best phone jacks ever made!!! Telephone company switchboards used Switchcraft jacks almost exclusively and these Switchcraft 1/4 inch phone jacks were plugged in and unplugged hundreds of times per day by switchboard operators for many years, before needing to be replaced. These are the same basic design used before the dial system replaced human operators.

Don DeJong - January 23rd, 2023
5 out of 5

There are certain instances when you don't have enough depth for a regular 1/4" jack, and that's where the longer bushing (3/8") is the perfect solution. And you can never go wrong with Switchcraft parts. They're always dependable.

Stephen300 - September 9th, 2022
5 out of 5

Excellent high quality jacks that I use on all my amp builds. Highly recommended.

Patrick Coleman - March 19th, 2022
5 out of 5

switchcraft quality and the long thread shaft I needed for my radio build. great!

60bassman - February 10th, 2022
5 out of 5

These switches fit perfectly in my 1965 fender bassman. The only difference is the originals had only two solder points. These have six. You just wire on one side of the switch, leave the other side blank.

Tony P. - February 20th, 2021
5 out of 5

Great 1/4" jack. The best out there IMHO.

Glenn - September 29th, 2019
5 out of 5

These are very high quality and will last years

Bob R - August 10th, 2019
5 out of 5

You can alway count on Switchcraft, there are cheap units out there , and are not worth buying, these are worth their “salt”

Jeff Duncan - May 28th, 2019
5 out of 5

Quality jack. Would like to show a picture of installation in my amp chassis.

wishbone - May 10th, 2016
5 out of 5

best jack in the industry, still!!!