Nomos Glashütte · Tangomat

Strap for Tangomat Norma

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter38 mm
Reference629
FamilyTangomat
MovementNomos Glashütte caliber Epsilon hours, minutes, small seconds
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Tangomat 629

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Tangomat 629, seen from the bench

The Nomos Glashütte Tangomat 629 is a 38.3 mm stainless steel automatic watch embodying Saxon watchmaking tradition. It features the Epsilon calibre, an automatic movement with balanced winding, running at 3 Hz. The watch includes hours, minutes, and small seconds on a silvered dial with applied indices. The 20 mm strap size follows classical proportions derived from the case diameter and lug depth, a calculation Glashütte has applied since the 19th century. A transparent caseback reveals the anchor escapement and chronometric regulation.

Frequently asked questions

What is the lug width of the Nomos Glashütte Tangomat 629?

The lug width of the Tangomat 629 is 20 mm. This measurement is determined by the proportions of the 38.3 mm case and represents a classical standard faithful to Glashütte's watchmaking tradition. A 20 mm strap fits perfectly between the lugs without lateral play or unwanted protrusions.

Which strap is recommended for the Tangomat 629?

For the Tangomat 629, a vegetable-tanned alligator strap in cognac colour is recommended, as it harmonises naturally with the brushed case and silver dial. Alternatively, a brown tobacco calf leather or navy cotton NATO offer versatility while maintaining the model's elegance. Dark FKM rubber is suitable for daily and sporting wear.

How do you change the strap on the Nomos Glashütte Tangomat 629?

The Tangomat 629 strap is changed by extracting the lug pins with a specialised tool. Position the tool's blade in the slot carved into the lug and gently push the pin outward. Repeat on the other side and remove the worn strap. Insert the new strap by aligning the holes and pushing the pins until they lock completely.

What is the difference between an aftermarket strap and an original Nomos strap?

Quality aftermarket straps guarantee dimensional compatibility (20 mm) but offer greater variety in materials, finishes and colours compared to original Nomos straps. A well-crafted vegetable-tanned aftermarket strap develops a patina over time that harmonises with the case patina, creating an aesthetic harmony often superior to industrially-produced straps.

How long does a leather strap last over time?

A quality leather strap, especially one made with vegetable tanning, has an average lifespan of 5-8 years with daily wear and proper maintenance. The natural patina that develops makes the strap increasingly beautiful. Wear is most rapid in stress zones (keeper and buckle). Regular conditioning with natural waxes significantly extends longevity.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only