Nomos Glashütte · Tangente

Strap for Tangente Gold Gangreserve

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter35 mm
Reference117
FamilyTangente
MovementNomos Glashütte caliber Gamma Hours, Minutes, Small Seconds | Power Reserve Indicator
CaseRose Gold

Spring bar

Swiss Standard universal spring bars

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

Straps for the Tangente 117

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Tangente 117, seen from the bench

The Tangente represents one of the flagship models of the Nomos Glashütte manufactory, characterized by a minimalist Bauhaus design. It is equipped with the in-house produced Gamma caliber with hour, minute, small second and power reserve indications. The 18mm lug case features the essential lines typical of the German watchmaking school.

Frequently asked questions

What is the exact lug width of the Nomos Glashütte Tangente 117?

The lug width of the Nomos Glashütte Tangente 117 is exactly 18 mm. This is a specific measurement rarely found in mainstream watch catalogues, perfectly calibrated to the proportion of the 35 mm case diameter. When purchasing an aftermarket strap, always verify that the lugs are spaced at precisely 18 mm to avoid friction against the case or gaps between strap and lugs.

Which strap material pairs best with the Tangente 117 in rose gold?

For the Tangente 117 in rose gold, the finest aesthetic pairing is hand-dyed alligator leather in dark brown, cognac, or deep burgundy tones. Alligator's fine grain (1.2–1.4 mm) balances the polished case and amplifies the warmth of the precious metal. Alternative option: vegetable-tanned calf leather in tawny or bourbon, which develops natural patina over time. For functional versatility, a certified cotton NATO strap or cold-vulcanised FKM rubber ensure quick changes and performance in humid conditions.

How do you change the strap on a Nomos Tangente 117 without damaging the case?

Removing the strap requires a spring bar tool—a dedicated instrument with a thin, two-pronged tip. Position the tool at the midpoint of the spring bar inside the case, apply downward pressure gently until the internal spring retracts, then extract the bar. Never use improvised sharp objects (pins, knives) as these risk scratching the case. Once the bar is removed, slide off the old strap and thread in the new one. Reinsert the bar ensuring both ends are firmly seated in their sockets—you should hear an audible click when properly locked.

Is an aftermarket 18mm strap compatible with the Tangente 117?

Yes, provided the strap is specifically cut for 18 mm lugs. Always verify the product specification for exact lug width: even a 0.5 mm deviation can cause issues. MilanoStraps.it offers a comprehensive collection of 18 mm straps in leather, NATO, and rubber, tested for compatibility with the Nomos Tangente 117 and other models with this lug width. The flexibility of the aftermarket allows for colour choices and materials unavailable in official Nomos catalogues.

What is the average lifespan of a leather strap on a Tangente 117?

A high-quality leather strap (alligator, cordovan, calf) under moderate daily wear has an average lifespan of 18–36 months, depending on environmental factors (humidity, perspiration, sun exposure) and the quality of the tanning process. Vegetable-tanned straps develop natural patina more rapidly but maintain structural integrity and security for 2–3 years with proper care (occasional cleaning with a damp cloth, conditioning with specialist creams every 6 months). A NATO strap or rubber strap has superior longevity (3–5 years) as it does not undergo biological degradation—only regular hygenic maintenance is required.

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