Tuner Pin Drill Jig

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Tuner Pin Drill Jig

Item # 4857
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Tuner Pin Drill Jig

About This Item

Aligns your hand drill for accurate tuning machine mounting pin holes.

This anodized aluminum jig accurately locates mounting pin holes in the back of a guitar headstock. Use it before drilling for the alignment pins found on many modern enclosed tuning machines. These tuners don't use the traditional exposed tuner mounting screw, but rather a hidden pin on the underside of the tuner housing.

It keeps your hand drill perpendicular for accuracy, and works for left or right-side tuners. You can position single-pin Schaller tuners, two-pin Schallers, one-pin Sperzels, and Fender locking tuners. The jig fits into the peghole with a self-centering bushing and thumbscrew for quick and easy attachment. Instructions included.

This jig is designed for use with a No. 38 (.101") drill bit. Measure the height of the alignment pins on your tuners and drill the holes to the appropriate depth.

This product is made exclusively for Stewart-MacDonald by


Product Instructions

Tuner Pin Drill Jig Instructions

How to install tuners with set pins (as opposed to screws) with the Tuner Pin Drill Jig.

Customer Reviews

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  • 4.70 average rating from 30 reviews
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Nice buy

(Customer's Reviews)

I just used this jig to install a set of Spertzel 6-inlines. Unlike a previous reviewer mine was spot on. It made what could have been a complex job a snap. After having used it I cannot imagine not using it. Well worth the $40.00 price tag. Thanks StewMac.


not a perfect fit

(Customer's Reviews)

Surprisingly, this jig was slightly off when using the hole designed for Sperzel 6 in line tuners. We were installing on a 20 year old strat and the hole was too far away from the tuner peg, perhaps 1/4 of the peg diameter. Close but not a perfect fit and it bent the pegs out slightly once we forced them into place.


Excellent jig and a must have for all the guitar tinkers

(Customer's Reviews)

Great piece of equipment and a very trusty friend to my Dremel, where the two in tandem make upgrading tuners a plain breeze. Successfully installed a few sets of Sperzels with these, couldn't be happier.

Cheery-o from London-town

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StewMac PDF Catalog, page 21 See Tuner Pin Drill Jig
on page 21 of our StewMac Catalog PDF

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