San Martin New Fly Adjustable Clasp 16mm

BBrand: San Martin
Model: BK1642
Suitable For San Martin Brand 20*16mm Size 3 Links Bracelet,
With 2Pcs Extension links, side polished.
Other Brands Non-universal,
Material: 316L Solid Stainless Steel
Length: 42mm=1.66in,
Clasp: New Fly Adjustable Clasp, With 3D Hexagonal Logo
The Set Includes:
1Pcs Clasp
2Pcs Side Polished Extension links

Screw Structure A applicable model:
SN0004-G(Non-rivet Bracelet),SN0008-G(Non-rivet Bracelet),SN0020-G,SN0021-G,SN0047-G,SN0052-G,SN0054-G-B1/C(Not Suitable for SN0054-G-E1/E2),SN0068-G,SN0107-G,SN0107-G-X,SN0109-G,SN0111-G,SN0112-G,SN0121-G.  

Pin Structure Applicable model: old pin structure bracelet, not screw structure bracelet.

Screw Structure B applicable model: SN0008-G-C(screw structure), SN0017-G-B/SN0017-G-E and GD (screw structure), SN0054-G-E(screw structure) 

Choosing the Correct BK1642 Connection

Choose Screw Structure A, Screw Structure B or Pin Structure by matching both your bracelet's connection and the applicable model list above. Similar model names can use different bracelet versions, so check the full model suffix as well. Pin Structure is for the older pin-connected bracelet, not a screw-connected version.

This clasp is specified for compatible San Martin three-link bracelets that taper from 20mm to 16mm; the listed 42mm measurement is the clasp length. Width alone does not establish compatibility, and the clasp is not universal across brands. If you are unsure, contact Watchdives support with your full watch model and clear photos of the bracelet-to-clasp connection before ordering. You can also compare the attachment requirements in our adjustable watch clasps collection.