Tudor Black Bay Nylon Deployant Strap — FKM Reinforced

This strap fits any Tudor with a 20mm or 22mm lug width. Black Bay 58, Black Bay 41, Black Bay GMT, Black Bay Pro, Black Bay Chrono, Pelagos, and Ranger. Select your size above and it works.

Single-pass woven nylon with a brushed stainless steel deployant clasp. The NATO strap without the bulk. Traditional NATOs double the fabric under the watch, adding height and shifting the case away from the wrist. This strap runs a single pass through both lugs with no fold-back, sitting flush against the case back for a cleaner, lower profile. On a Black Bay 58 or a Ranger, the difference is visible from the side. The watch sits closer to the wrist and the strap disappears under a shirt cuff.

The FKM rubber reinforcement at the adjustment notches is what gives this strap a longer life than standard nylon. The notch holes are where every fabric strap fails. The pin pushes through, the fibres fray, and within six months the hole elongates and the strap loosens. FKM rubber bonded into each notch absorbs the stress, prevents fraying, and keeps the fit consistent over months of daily wear. It is a small detail that solves the biggest problem with nylon straps.

The deployant clasp folds shut in one motion rather than threading a pin through a hole. It distributes pressure evenly across the wrist, keeps the strap in better condition, and makes the watch go on and off with a single click. On a Tudor that cost £2,500+, the clasp should match the watch's standard of engineering. This one does.

Complementary clasp engraving available. Up to three characters, laser engraved into the stainless steel for a permanent, precise finish.

Key Features:

• Single-pass woven nylon, low-profile design
• FKM rubber reinforced notches at every adjustment hole
• Brushed stainless steel deployant clasp, pre-fitted
• Lightweight, breathable, and washable
• Available in 20mm and 22mm lug widths
• Complementary clasp engraving up to 3 characters

Tudor Black Bay Compatibility Guide:

20mm: Black Bay 58 (ref. 79030, 79010), Black Bay 58 GMT, Black Bay 54 (ref. 79000), Black Bay 68 (ref. 79018), Black Bay Pro (ref. 79470), Ranger (ref. 79950), Monarch (ref. M2639)

22mm: Black Bay 41 (ref. 79680, 79683), Black Bay GMT 41 (ref. 79830, 79833), Black Bay Chrono (ref. 79360, 79363), Black Bay Ceramic, Pelagos 42 (ref. 25600, 25610)

This strap does not fit: The Pelagos 39 uses 21mm, which is not available in this strap. The original Black Bay Bronze (ref. M79250) uses a non-standard 23mm lug width and is not compatible. The BB58 Bronze (ref. 79012) uses 20mm and fits.

Important: Tudor has introduced 21mm lug width on selected newer Black Bay 41 METAS-certified references (2025 onward). The standard BB41 (ref. 79680, 79683) remains 22mm. If you own a 2025 or later BB41, measure between the inner edges of both lugs to confirm whether your watch is 21mm or 22mm before ordering.

Use our on-page strap checker to confirm your exact reference before ordering.

What's included:

• 1x Single-pass woven nylon strap
• 1x Brushed stainless steel deployant clasp (pre-fitted)
• Spring bars
• Watch not included

All Tudor Straps → | Tudor Sailcloth Deployant → | Tudor NATO Fabric → | Best Tudor NATO Straps Guide →

Free tracked delivery

• Royal Mail Tracked, 1–2 working days
• Order by 3pm Monday to Friday and it ships the same day
• Weekend orders ship on Monday

Guaranteed next day – £9.95

• Royal Mail Special Delivery, by 1pm the next working day
• Order by 3pm Monday to Friday

Free FedEx Priority shipping on orders over $120 to the US, C$190 to Canada, A$200 to Australia, NZ$240 to New Zealand and £100 everywhere else. Below that, the cost is shown at checkout.

No fees on delivery

• US prices already include all import duties and taxes.
• Everywhere else, any duties and taxes are shown and paid at checkout.
• Either way the checkout total is final – nothing more to pay when it arrives.

Delivery times (FedEx, shipped from London – order by 2pm UK time Monday to Friday and it ships the same day)

• Europe: 1–2 working days
• United States and Canada: 2–3 working days
• Middle East and Asia: 2–4 working days
• Australia and New Zealand: 3–4 working days
• Rest of world: 3–5 working days

Full shipping policy

You have 14 days from delivery to start a return through our returns portal. Items must be unworn and in their original packaging. Personalised and engraved items can’t be returned.

Full returns policy