Gotoh SG381-07 MG-T Locking Tuners, 6-in-line (Cosmo Black)

Why we say this

Charvel list Charvel-branded die-cast locking tuners on the Pro-Mod DK24 HH 2PT but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. The stock tuners already lock, so this is a quality and feel upgrade rather than a new feature. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Charvel list Charvel-branded die-cast tuners on the Pro-Mod San Dimas Style 1 HH FR E but don't publish the hole size. Modern sealed and die-cast tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Charvel list Charvel-branded die-cast locking tuners on the Pro-Mod San Dimas Style 1 HSS HT M but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. The stock tuners already lock, so this is a quality and feel upgrade rather than a new feature. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Fender list Fender ClassicGear tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Fender list Fender ClassicGear tuners on this guitar, and Fender's service manual gives the thru-hole as .404 inch (10.3mm). Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Fender list Deluxe Cast/Sealed Locking tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Fender list Standard Cast/Sealed tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Fender list Standard Cast/Sealed tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Fender list Standard Cast/Sealed tuners on this guitar, and Fender's service manual gives the thru-hole as .397 inch (10.1mm). Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Fender list Standard Cast/Sealed tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Ibanez list Gotoh Magnum Lock tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Ibanez list Gotoh Magnum Lock tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Ibanez list Gotoh MG-T locking tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Owners report that aftermarket tuner screws don't always line up with the factory holes on this headstock. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Jackson list sealed die-cast tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Owners report that aftermarket tuner screws don't always line up with the factory holes on this headstock. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Jackson list sealed die-cast tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Owners report that aftermarket tuner screws don't always line up with the factory holes on this headstock. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Jackson list sealed die-cast tuners on the KVX and a pointed 6-in-line headstock, but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Owners report that aftermarket tuner screws don't always line up with the factory holes on Jackson's pointed headstock. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Jackson list sealed die-cast tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Owners report that aftermarket tuner screws don't always line up with the factory holes on this headstock. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

Jackson list sealed die-cast tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Owners report that aftermarket tuner screws don't always line up with the factory holes on this headstock. Take one tuner off and check the hole and where the screw or pins sit before ordering.

Why we say this

ESP list Grover tuners on the MH-1000 without naming the model, and don't publish the hole size. Without a named tuner type, we can't say the holes are the 10mm these need. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes and fixed with one screw at 45 degrees to the post, so smaller holes would need reaming and a different factory screw position means one small pilot hole per tuner. Take one tuner off, measure the hole and check where the screw or pins sit before ordering.

Why we say this

Gibson don't publish the tuner hole size or mounting for this guitar. Gotoh's SG381 is fixed with one screw set at 45 degrees to the post, and retailers list it for 10mm holes. The listing we link doesn't give Gotoh's full part number. Take one tuner off, measure the hole and check where the screw or pins sit before ordering.

Why we say this

The AZES40 has a 6-in-line headstock, so the layout matches. Hole size is the open question. Gotoh specify a 10mm bore for the SG381 housing. Ibanez's own AZES40 spec sheet lists the stock tuners as split-shaft machine heads, a vintage-style design that normally uses a bore under 9mm rather than the 10mm modern standard, and the AZES40's actual hole diameter is not published anywhere and has not been independently measured. The higher-tier AZ2204 and AZ2402 Prestige ship Gotoh sealed tuners, but that is a different tuner design on a different production tier and does not settle the AZES40.

Why we say this

Ibanez only list Ibanez machine heads on the JEM Jr, with no type or hole size. Without a named tuner type, we can't say the holes are the 10mm these need. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes and fixed with one screw at 45 degrees to the post, so smaller holes would need reaming and a different factory screw position means one small pilot hole per tuner. Take one tuner off, measure the hole and check where the screw or pins sit before ordering.

Why we say this

Ibanez list Gotoh machine heads on the RG550 Genesis without naming the model (their 2013 Japanese launch spec named the Gotoh SG381), and don't publish the hole size. Without a named tuner type, we can't say the holes are the 10mm these need. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes and fixed with one screw at 45 degrees to the post, so smaller holes would need reaming and a different factory screw position means one small pilot hole per tuner. Take one tuner off, measure the hole and check where the screw or pins sit before ordering.

Why we say this

Ibanez fitted Gotoh tuners to the RG652 Prestige, but the type changed between versions (plain Gotoh machine heads on the RG652BG, Gotoh locking tuners on fixed-bridge versions), and they don't publish the hole size. Without a named tuner type, we can't say the holes are the 10mm these need. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes and fixed with one screw at 45 degrees to the post, so smaller holes would need reaming and a different factory screw position means one small pilot hole per tuner. Take one tuner off, measure the hole and check where the screw or pins sit before ordering.

Why we say this

Ibanez only list Ibanez machine heads on the RGA42FM, with no type or hole size. Without a named tuner type, we can't say the holes are the 10mm these need. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L6 CB) is sold for 10mm holes and fixed with one screw at 45 degrees to the post, so smaller holes would need reaming and a different factory screw position means one small pilot hole per tuner. Take one tuner off, measure the hole and check where the screw or pins sit before ordering.

Why we say this

Ibanez don't publish the tuner hole size or mounting for this guitar. Gotoh's SG381 is fixed with one screw set at 45 degrees to the post, and retailers list it for 10mm holes. The listing we link doesn't give Gotoh's full part number. Take one tuner off, measure the hole and check where the screw or pins sit before ordering.

Why we say this

Squier don't publish the tuner hole size or mounting for this guitar. Gotoh's SG381 is fixed with one screw set at 45 degrees to the post, and retailers list it for 10mm holes. The listing we link doesn't give Gotoh's full part number. Take one tuner off, measure the hole and check where the screw or pins sit before ordering.

Why we say this

This is the right-handed Gotoh SG381 Magnum Lock-Trad set. Gotoh build a genuine left-handed version of the same tuner, and that is the version this guitar needs.

Why we say this

Layout mismatch: this tuner set is six in a line and this guitar's headstock is three per side, so the set cannot be fitted as sold regardless of peg hole size.