Grover A-Style 309 Mandolin Tuning Machines

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Grover A-Style 309 Mandolin Tuning Machines Nickel, 4L/4R

Nickel, 4L/4R

Item # 5676
In stock, ready to ship!


3 or more $53.11
6 or more $48.33
Grover A-Style 309 Mandolin Tuning Machines Gold, 4L/4R

Gold, 4L/4R

Item # 5676-G
In stock, ready to ship!


3 or more $71.29
6 or more $64.88
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Grover A-Style 309 Mandolin Tuning Machines

About This Item

Engraved die-cast baseplates, 18:1 gear ratio. Complete sets of 4-left/4-right tuners, with equal-length knob shafts and removable pearloid plastic knobs.

Standard 29/32" (23mm) string post spacing. Drill the peghole to 5/16" (7.94mm) and ream the face with our standard peghole reamer.

Each set includes:
• Pair of 4-left, 4-right tuning machines
• Removable pearloid plastic knobs
• Press-fit peghead bushings
• Mounting screws

Installation Tips

Peghole spacing: Plate-mounted tuners can't work efficiently if the pegholes are improperly drilled. Our Mandolin Peghead Drill Jig ensures precise 29/32" spacing for accurate alignment for these tuning machines.

Bushings: We recommend the Standard Peghole Reamer to cut smooth, perfectly round holes.

Mounting screws: Pilot holes required. Installing delicate screws into hard wood requires great care and accuracy. We highly recommend the #1711 Depth-stop Drill Bit (No.50 bit) for the pilot hole before installing these screws. Lubricate the screw threads with cutting lubricant (also wax or a bar of soap) to reduce friction and help them thread properly.

    • Item #
    • Weight
    • 5676
    • 0.448 lbs. (0.2 kg)
    • 5676-G
    • 0.458 lbs. (0.21 kg)

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  • 4.75 average rating from 12 reviews
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Staying in tune!

(Customer's Reviews)

I put this set of tuners in a Michael Kelly mandolin that had trouble staying in tune for very long. It was an easy installation and it fixed the problem. I am a happy camper!


Grover A-Style Mandolin Tuners

(Customer's Reviews)

Replaced the stock tuners on my Trinity mandolin. The stock tuners were rubbish and had to go. Now with the Grovers, it sounds a lot better and stays in tune. A highly recommended upgrade. Thanks Grover and Stewmac.


Great Scott

(Customer's Reviews)

These Grover Mando Tuners are unbeatable! I use them on all my builds and I'm getting ready to purchase some for the Cigar Box UKE that I'm currently building! Thanks for all you do Mr Stewmac!

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StewMac PDF Catalog, page 89 See Grover A-Style 309 Mandolin Tuning Machines
on page 89 of our StewMac Catalog PDF

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