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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Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎸 Lock in your groove, not your guitar! Stay secure, play fearless.

TAILORED COMPATIBILITY - Designed specifically for SCHALLER style strap locks and select acoustic electronics like FISHMAN.
NON INVASIVE SECURITY UPGRADE - Adds strap lock safety without permanent guitar modifications—keep your instrument pristine.
ROCK SOLID BRASS CONSTRUCTION - Crafted from premium solid brass with a sleek black finish for unmatched strength and style.
UNIVERSAL FIT FOR PRO GUITARS - Seamlessly fits standard 3/8" x 32 thread output jacks on most MARTIN & TAYLOR models up to 2002.
PRECISION INSTALLATION REQUIRED - Requires basic knowledge to adjust jack thread length ensuring perfect Acousti-Lok positioning.

The MusicNomad MN270 Acousti-Lok Strap Lock Adapter is a premium solid brass accessory designed to securely lock your guitar strap to standard 3/8" x 32 thread output jacks on most acoustic guitars, including many MARTIN and TAYLOR models. It enhances strap security without permanent modifications, compatible with SCHALLER style strap locks, and requires careful installation for optimal fit.

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

J**N

Very nicely build adapter for strap lock

Someday I’ll find the one of these that I bought a year ago and I’ll have a strap lock on another guitar, but in the meantime, I finally have a strap lock on my Martin and this adapter works perfectly. I’m very happy with it, it screwed on easily, and there is room for the guitar cable and RokLok on the end of my guitar. Best, my strap doesn’t randomly pop off.

14.06.2025

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

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

V**T

Bon achat

Une fois qu'on a trouvé comment le fixer pour éviter qu'il ne tourne c'est top.

24.04.2026

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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