Tudor · Black Bay 58

Strap for Black Bay Fifty-Eight Stainless Steel / Black / Strap

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

Lug width20 mm
Case diameter39 mm
Reference79030N-0002 (aka: M79030N-0002, 79030N0002)
FamilyBlack Bay 58
MovementTudor caliber MT5402 hours, minutes, seconds | chronometer
Year2018
CaseStainless Steel

Spring bar

Spring bars for Tudor

The right category for this model · choose the 20 mm size

Straps for the Black Bay 58 79030N-0002 (aka: M79030N-0002, 79030N0002)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Black Bay 58 79030N-0002 (aka: M79030N-0002, 79030N0002), seen from the bench

The Tudor Black Bay 58 (79030N-0002) is a faithful interpretation of the 1958 Submariner diving watch, featuring a 39mm stainless steel case and burgundy dial. It houses the MT5402 automatic movement, developed in-house with 70-hour power reserve and COSC Chronometer certification. The case offers 200 meters water resistance, ceramic unidirectional bezel, and sapphire crystal. The 20mm lug width accommodates standard 20mm straps and is measured between the outer edges of the case lugs.

Frequently asked questions

What is the lug width of the Tudor Black Bay 58 79030N-0002?

The lug width of the Tudor Black Bay 58 79030N-0002 is 20mm, which is the distance between the two lateral lugs of the case. This is the fundamental parameter for selecting compatible straps. Measurement is carried out with a digital calliper, positioning the tips between the left and right lug at the midpoint of the case.

Which strap is most suitable for the Tudor Black Bay 58?

For the Black Bay 58 we recommend alligator leather with vegetable tanning, which emphasises the vintage character of the watch thanks to its natural texture and the patina it develops over time. Alternatively, vulcanised rubber is ideal if you intend to use the watch in a marine environment, thanks to its resistance to moisture and absence of water absorption.

How do I change the strap on the Tudor Black Bay 58 79030N-0002?

To replace the strap, obtain a spring bar tool (small instrument with a bifid tip). Place the watch on a soft surface with the strap facing downwards. Insert the spring bar tool under the lug, push gently upward to release the pin, then remove the strap. Repeat from the other side. To install the new strap, align the holes with the lugs and push the pin until you hear the closing click.

Can I fit an aftermarket strap on this model?

Yes, any strap with a 20mm lug width is compatible with the 79030N-0002. Quality aftermarket straps offer advantages in terms of material variety and style compared to the original strap. Make sure the strap is made of durable materials and that the lug width is exactly 20mm.

How long does a leather strap last for the Tudor Black Bay 58?

A quality leather strap, in alligator or calf, has an average lifespan of 3-5 years with daily wear. Longevity depends on frequency of wear, exposure to moisture and maintenance. Vegetable tanning tends to last longer than chrome tanning, developing patina rather than wearing out. Rubber or NATO straps have virtually unlimited durability.

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