Knowledge Base:  
Pegheds Tuner Installation and Operation
Last Updated: 10/04/2022

Professional installation is strongly recommended. Please read instructions completely before starting.

Our standard uke and violin peg is 1.83” (46.5mm) long and the outside diameter of the thread tapers from approximately .310” to .330” (8mm). They are designed to thread into a 5/16” minimum diameter tapered hole. Pegheds sets include both right and left hand threads. The right hand thread is for the bass side (strings 3-C and 4-G), and the left hand thread is for the treble side (strings 1-A and 2-E). They should thread into the neck in the direction that lowers the pitch of the string.

Fluke and Flea ukuleles should have an existing 5/16 (.315”) dia. peg hole for the Grover 2B friction tuners. This hole must be opened up with to a taper from .315” on the inside to .330” on the outside. A standard 30:1 (approximately 2 deg. taper) violin peg reamer will work fine. Reaming very little at a time, check the fit of the Peghed such that the threaded portion is just shy of protruding into the peg box. By gently threading the peg in and out of the hole, it will seat more securely and fully. To create a taper without a violin reamer, it is possible to counter bore with a slightly larger drill [letter size Q (.332 dia.) or 21/64”] about half way thru the peg hole – no more than about .25” deep. Again, by threading the peg in and out it will cut its own threads and seat properly into the hole.

A medium or high viscosity (toughened) super glue or Titebond wood glue will work. Check the fit by screwing the peg in gently and removing it. The dry fit lightly threaded in will be close to the final installation depth. Apply glue to the thread and screw in carefully but quickly.

Do not use pliers for installation - the body is thin anodized aluminum that scratches easily. Do not use the knob as a handle when tightening. Grasp the shank with a piece of rubber or leather to improve grip. There is no need to over tighten, just screw in until the taper binds in the mounting hole, and let the glue set.

A broken shaft can be replaced by removing the internal shaft and replacing with a new one. If the housing must be removed from the wood neck, a 10 to 15 second heating with a hot soldering iron will help loosen the glue and make unthreading easier.

The internal mechanism is designed to brake more fully when the pegs are lightly pressed in while rotating, and turn more freely while the peg head is gently pulled outwards. This allows adjustment of the friction and braking force. If the peg is jammed tight, it may require a good tug and possibly a drop of mineral spirits where the shaft enters the housing to help loosen it up. The string winding on the peg should not come in contact with the wood of the headstock as this will also jam the peg and prevent it from working properly.


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