Tudor · Black Bay

Strap for Black Bay Black Dark / Bracelet

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter41 mm
Reference79230DK-0005 (aka: M79230DK-0005, 79230DK0005)
FamilyBlack Bay
MovementTudor caliber MT5602 hours, minutes, seconds | chronometer
Year2016 - 2018
CaseStainless Steel

Recommended spring bar

Modern Tudor 22mm spring bars — factory specification

Technical match for lug width and diameter · lug 22 mm · Ø 1.8 mm

All Tudor spring barsOpen →

Straps for the Black Bay 79230DK-0005 (aka: M79230DK-0005, 79230DK0005)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Black Bay 79230DK-0005 (aka: M79230DK-0005, 79230DK0005), seen from the bench

The Tudor Black Bay 79230DK-0005 is a 41mm stainless steel sports watch evolved from 1950s British Royal Navy origins. It features the MT5602 in-house chronometer-certified movement, unidirectional rotating bezel, screw-down crown, and 200-meter water resistance for recreational diving. The black dial displays lume applications, Mercedes hands, and hour indices. The 22mm lug width is standard for this 41mm case model.

Frequently asked questions

What is the lug width of the Tudor Black Bay 79230DK-0005?

The lug width of the Tudor Black Bay 79230DK-0005 is 22mm. This measurement remains constant regardless of which strap is fitted and represents the distance between the case lugs. Always verify this specification before purchasing an aftermarket strap to ensure compatibility.

Which strap is recommended for the Tudor Black Bay 79230DK-0005?

The Tudor Black Bay 79230DK-0005 accommodates multiple strap options: vegetable-tanned leather for everyday elegance, alligator for formality, calf leather for softness, FKM rubber for diving operations, and NATO fabric for tactical versatility. Your choice depends on intended use and context. A tobacco-brown vegetable-tanned leather offers the most versatile balance.

How do I change the strap on the Tudor Black Bay 79230DK-0005?

To change the strap, obtain a spring bar tool with dual ends. Position the tool underneath the case lug pin and compress gently downward, extracting the pin from the bar. Repeat on the opposite side. Insert the new strap's pins into the case lugs, ensuring complete seating. The operation takes minutes and demands caution to avoid scratching the case.

Can I fit a bespoke aftermarket strap on my Tudor Black Bay 79230DK-0005?

Yes, absolutely. Any 22mm aftermarket strap is fully compatible. Choose between ready-to-ship standard straps or commission a bespoke strap from a specialised atelier such as Casati Milano, who personalise dimensions, initials, thread colour, and provide 18-month warranty.

What is the lifespan of a leather strap on the Tudor Black Bay 79230DK-0005?

Lifespan depends on material type and usage intensity. A quality vegetable-tanned leather strap lasts 3-5 years with routine care; alligator may reach 5-7 years; French calf leather 2-4 years. Exposure to saltwater, intense perspiration, and direct sunlight reduces longevity significantly. Regular cleaning and conditioning substantially extend strap life.

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