Jack The Gripper

  • 43 Reviews
  • Write a review

Ingenious! Holds the jack steady so you can tighten/loosen the nut without disassembling your instrument or amp.

Read more

Jack The Gripper

Item # 0814
In stock, ready to ship!


Total: $0.00
Quantity: 20


Jack The Gripper

Jack The Gripper holds the jack steady while you tighten the nut. This keeps the jack from turning and damaging the solder joints inside.

Subscribe to StewMac's channel on


Ingenious! Holds the jack steady so you can tighten/loosen the nut without disassembling your instrument or amp.

A loose nut on a 1/4" jack is trouble. It's no fun to watch the jack disappear into your guitar or amp as the nut falls off, or to break a solder connection when you tighten the nut and the jack turns with it.

Designed by veteran repairman Frank Ford, Jack The Gripper is a smart tool that can save you a lot of time and work. Insert it into the jack, and the knurled cam locks in either direction, to hold the jack firmly while you tighten or loosen the nut.

Recessed jack? No problem—the tool also includes a clever steel adapter handle for use with your 3/8" square drive socket.

Instructions included.

Ratings & Reviews

Jack The Gripper

  • Based on 43 Reviews
Displaying 1 of 5 1 2 3 4 5
Write a review

CompliquT a prendre en main

By Kl3mko from FRANCE
(Customer's Reviews) Monday, May 12, 2014

J'ai eu quelques souci avec le mien. Une fois, il est restT coincT dans l'entrTe d'un ampli ; l'autre fois, il ne voulait pas s'enclencher et quand il s'est enfin verrouillT ; impossible de l'enlever de la prise jack de la guitare ... Du coup, ce n'est pas un outils trFs fiable selon moi. Et quand on voit le prix, c'est dTcevant

Great tool

By Broian from Tampa
(Customer's Reviews) Monday, March 24, 2014

Does exactly what it is supposed to. Just make sure to turn to opposite way than you are tightening.

Time Saver!!!

By Mike (Black Diamond Custom Guiatr S from USA
(Customer's Reviews) Thursday, January 09, 2014

Very first day i received my order wouldn't you know it... one of my guitars input jacks (while practicing) came loose...so i reached for Jack the Gripper fresh out of the box and in about 30-seconds or so i had it fixed and solid again.... Thanks Stew Mac for great quality and common sense tools... Mike (Luthier/Builder), Black Diamond Custom Guitar Shop USA

Simple & Effective

By TomPF from Lake Elsinore, CA
(Customer's Reviews) Sunday, January 05, 2014

This is the greatest tool to FINALLY tighten up ALL the loose jacks on my substantial guitar and amp collection as well as to help fellow musicians with theirs. No more opening up gear to hold the back end, and no more jacks getting pushed back into guitar cavities or amp enclosures. Wish I had this for the past 35 years!! Oh, and a little tip from a guy who rode Harleys for decades on which EVERYTHING vibrates loose: a drop of BLUE Loctite on those threads will keep those connections nice and tight and still let you remove the connectors/jacks later if you need to.


By zudaka from Argentina
(Customer's Reviews) Saturday, December 21, 2013

EXCELENTE ART-CULO, facilita el trabajo.+++++

Very handy

By mikrow from Huntington Beach, CA
(Customer's Reviews) Friday, December 06, 2013

Especially if you have to tighten lots of nuts!

One That Works

By zapkat from Sierra Vista, AZ
(Customer's Reviews) Friday, October 11, 2013

I have tried Many jack tools. Some have even damaged the jacks, this is the One That Works. Jack The Gripper uses a cam action to hold the jack from turning, and with no damage to the jack. It's a little pricey, but well worth it.

Awesome and useful

By StephenA from NJ
(Customer's Reviews) Thursday, July 18, 2013

Saves time and frustration for tighten jacks. Must' have tool!

Quick and handy

By Adrian R from Minnesota
(Customer's Reviews) Wednesday, July 10, 2013

I found the prior reviews to be accurate; it's well-made, useful, if a bit costly. Considering that it won't really wear out, and this perennial problem of guitarists is so common, I figure I'll be using this for YEARS to come! Is it worth it? Depends...how much is your aggravation worth to you?

Jack The Gripper

By PatWilliams from Oakland, TN
(Customer's Reviews) Sunday, May 19, 2013

Great tool. I've replaced many a jack because I couldn't get the nut tight. I should never have this problem again. Now I can tighten my jacks without having to remove them or break the wires. Thanks StewMac

Displaying 1 of 5
1 2 3 4 5

Shown on page 27 of our latest catalog.