Bremont · Boeing

Strap for Boeing Model 1 Black

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

Lug width20 mm
Case diameter43 mm
Reference1BK
FamilyBoeing
MovementBremont caliber BE-36AE Hours, Minutes, Seconds | Date, Day | Chronometer
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 Boeing 1BK

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Boeing 1BK, seen from the bench

The Bremont Boeing 1BK is a British chronograph watch featuring the BE-36AE calibre movement. The stainless steel case measures 43mm in diameter with a black dial and white indices. Equipped with hours, minutes, seconds, date display, day indication, and chronograph function, this sports instrument combines professional reliability with outdoor versatility. The 20mm lug width ensures balanced proportions and compatibility with contemporary aftermarket straps.

Frequently asked questions

What is the correct lug width for the Bremont Boeing 1BK?

The lug width of the Bremont Boeing 1BK is 20mm. Always measure from inside to inside between the two spring bars that hold the strap. A 20mm width is essential to avoid play on the lugs and maintain the model's aesthetic coherence.

What is the best strap for the Bremont Boeing 1BK?

It depends on usage. For formal contexts, an alligator with vegetable tanning in brown or cognac tones is ideal. For tactical and outdoor environments, a NATO strap in matte black or charcoal grey reflects the aeronautical aesthetic. For marine use, vulcanised rubber in black offers maximum resistance and practicality.

How do you change the strap on the Bremont Boeing 1BK?

Use a spring bar removal tool or a fine-tipped screwdriver. Position the tool under the fixing pin on one side and apply gentle pressure to release it from the lug housing, then slide the pin outward. Repeat on the other side. Insert the new strap by aligning the holes and reinserting the pins until they lock in place.

Is an aftermarket 20mm strap compatible with the Bremont Boeing 1BK?

Yes, any properly constructed 20mm strap is compatible with the 1BK. Milano Straps offers handcrafted straps in premium leather, NATO and technical rubber, all manufactured in Italy and verified to precision standards. Always ensure the strap is exactly 20mm to avoid fitting issues.

What is the average lifespan of a leather strap for the Bremont Boeing 1BK?

A quality vegetable-tanned leather strap, with proper maintenance, lasts 3 to 5 years of regular use before requiring replacement. Factors such as frequency of use, humidity, UV exposure and proper drying after wetting affect longevity. A polyamide NATO strap lasts much longer, over 10 years.

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