Nomos Glashütte · Tangente

Strap for Tangente 38 Datum

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

Lug width18 mm
Case diameter38 mm
Reference138
FamilyTangente
MovementNomos Glashütte caliber Beta Hours, Minutes, Small Seconds | Date
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 Tangente 138

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

Frequently asked questions

What is the lug width of the Nomos Glashütte Tangente 138?

The Nomos Glashütte Tangente 138 features an <a href="/pages/termine-glossario/misura-ansa">18 mm lug width</a>. This specification allows compatibility with a comprehensive range of artisanal straps, from traditional leathers to modern textiles.

What is the best strap for the Nomos Glashütte Tangente 138?

The ideal strap depends on usage context and aesthetic preference. For formal occasions, black <a href="/pages/termine-glossario/alligatore">alligator</a> leather with gold <a href="/pages/termine-glossario/deployante">deployante</a> clasp ensures understated elegance. For daily wear, brown <a href="/pages/termine-glossario/concia-vegetale">vegetable-tanned</a> calf or grey NATO fabric preserves the dial's neutral aesthetic. For light sports, charcoal or sand-beige FKM rubber balances the case's sober geometry.

How do I change the strap on the Nomos Glashütte Tangente 138?

Remove the spring bars located at the case lugs using a dedicated tool (spring bar tool). Gently lift one end of the bar and slide it laterally. Repeat for both sides, then insert the bars into the new strap and reposition them in the lugs. This is a straightforward, reversible operation requiring no watchmaker intervention.

Is the Nomos Glashütte Tangente 138 compatible with 18 mm aftermarket straps?

Yes, the 138's 18 mm lug width accommodates any artisanal strap of identical width. Premium aftermarket options, such as those from MilanoStraps, deliver superior construction, texture variety, and material selection whilst maintaining full mechanical compatibility and warranty protection.

What is the typical lifespan of a leather strap for the Nomos Glashütte Tangente 138?

A high-quality leather strap (calf, <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a>) with moderate wear lasts 18–36 months before replacement becomes advisable. Longevity depends on sun exposure, humidity, frequency of use, and maintenance (clean regularly with microfibre cloth, avoid moisture accumulation). Rubber or NATO straps offer superior durability, 4–5 years, with minimal maintenance.

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.

Request an appointment →

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