Does the adapter lock spin on the guitar strap peg?

The adapter fits snugly. It doesn’t spin loosely but can be spun into position by hand fairly easily and it will pretty much stay where you leave it. Doesn’t touch the body of the guitar. Well made item, recommended.

Will this work on a Yamaha A3 guitar?

If your Jack is metric, then yes. These devices Work on all A/E guitars that have a jack replacing the strap pin. Seller may know which model you need. If not Yamaha should or you could just unscrew the strap retainer nut go to a hardware store and find out the size.

expression system 1 taylor 814 ce circa 2004. Will this strap lock work??

I believe all you need to do in your case is change the strap button to the strap lock style.

Will this work with the new Schaller S lock system?

I don't know for sure but it probably will with some minor modification. I got it to work with my Dunlop locks but had to substitute the Dunlop receiver for the button that's on there. It's a really great solution for having a strap lock when your guitar's output cable is where the strap would normally go. It's also very solid.

Musicnomad Guitar Strap Locks Mn270

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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253.59 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎸 Lock in your groove, never lose your strap!

STRAP LOCK FREEDOM - Enables use of Schaller-style strap locks, so your guitar stays put during every performance.
PRECISION ENGINEERING - Requires minimal installation know-how to perfectly adjust jack thread length for a flawless fit.
PLUG PLAY CONFIDENCE - Designed for acoustic guitars with Fishman electronics and Taylor models up to 2002—no permanent mods needed.
UNIVERSAL FIT ZERO COMPROMISE - Seamlessly fits standard 3/8" x 32 thread output jacks for broad compatibility.
BUILT TO LAST BUILT TO PROTECT - Crafted from solid brass with a sleek black finish, ensuring rock-solid security and style.

MusicNomad's MN270 Guitar Strap Locks feature a patent-pending Acousti-Lok adapter that securely fits standard 3/8" x 32 thread output jacks on most Martin and Taylor acoustic guitars. Made from solid brass with a black finish, it allows the use of Schaller-style strap locks without permanent guitar modifications, providing professional-grade security and peace of mind for serious musicians.

Specifications

ASIN	B07PPKYS6W
Best Sellers Rank	#59,596 in Musical Instruments ( See Top 100 in Musical Instruments ) #108 in Strap Locks
Brand Name	MusicNomad
Colour	Black
Compatible Devices	Acoustic Guitars with Standard Output Jacks
Country Of Origin	USA
Customer Reviews	4.5 out of 5 stars 717 Reviews
Fastener Type	strap lock
Global Trade Identification Number	00857047002821
Item Dimensions	9.5 x 8.9 x 2.5 Centimeters
Item Type Name	Guitar Strap Locks
Item Weight	1.25 Ounces
Manufacturer	MusicNomad
Manufacturer Part Number	MN270
Material Type	Stainless Steel
Pattern	Solid
Size	Standard Output Jacks
Style Name	Boom Microphone Stand With a Telescoping Boom Arm
Style Number	MN270
UPC	857047002821
Unit Count	1 Count

Reviews

G**I

Accessorio geniale

Geniale. Risolve brillantemente il problema delle tracolle che male si fissano all’ingresso jack, troppo grande di diametro, sul fondo delle chitarre acustiche, causando spesso cadute anche fatali dello strumento

6.01.2026

S**1

Great Guitar strap adapter!

Fits perfectly to Faith Mercury Scoop - brilliant!

15.07.2026

M**)

Muy buen invento.

Aún no lo he colocado pero no parece complicado, eso si, habrá que ir con mucha paciencia.

20.12.2024

N**T

Works, but does come loose often.

I'm happy with it, but it does tend to twist and come loose a lot.

7.11.2025

N**H

Love this product!

Great fit, super secure. Perfect solution.

13.08.2026

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