Hamilton · Khaki Navy

Strap for Khaki Navy Regatta Alarm

Takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width21 mm
Case diameter42 mm
ReferenceH77614343
FamilyKhaki Navy
MovementETA caliber 251.242 hours, minutes, small seconds | date | Chronograph | alarm
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 Khaki Navy H77614343

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Khaki Navy H77614343, seen from the bench

The Khaki Navy represents Hamilton's nautical line with a sporty vocation and multiple functions. It is equipped with the ETA 251.242 caliber with hours, minutes, small seconds, date, chronograph and alarm. The lugs measure 21mm in width.

Frequently asked questions

What is the lug width of the Hamilton Khaki Navy H77614343?

The lug width of the Hamilton Khaki Navy H77614343 is 21mm. This measurement represents the distance between the two fixing pins (spring bars) on the case. To verify it, place a digital calliper on the case lugs and measure the exact distance. Precise measurement ensures you purchase a compatible strap without lateral play or anomalous tension.

Which strap is recommended for the Hamilton Khaki Navy H77614343?

The ideal strap depends on intended use and aesthetic preference. A chocolate-brown alligator leather strap enhances the sports-elegant vocation. A NATO strap in navy blue fabric amplifies the tactical identity. A vegetable-tanned calf leather strap in aged brown conveys maturity. A black anthracite rubber strap maximises practicality in damp environments. All these materials are available in 21mm lug width and compatible with the H77614343.

How do I change the strap on my Hamilton Khaki Navy H77614343?

To change the H77614343 strap, you must remove the spring bars that connect the strap to the case. Use a dedicated spring bar tool, inserting the small lever into the pin opening and pushing downwards until the pin is released. Remove the old strap and insert the new one onto the corresponding pins, ensuring both sides are correctly aligned. The 21mm lug width guarantees perfect fit without play.

Can I use a third-party aftermarket strap with the H77614343?

Yes, you may use any aftermarket strap with 21mm lug width on the Hamilton Khaki Navy H77614343. Compatibility is guaranteed by lug width: if the strap has exactly 21mm width, it will fit the case pins without issue. We recommend verifying construction quality and materials with the manufacturer to ensure longevity and wrist comfort.

What is the expected lifespan of a leather strap for the H77614343?

The lifespan of a leather strap depends on tanning quality and intensity of use. An alligator or vegetable-tanned calf strap, with ordinary maintenance (occasional cleaning with damp cloth, annual conditioning with proper creams), can last 5-10 years. A woven NATO textile strap offers similar or greater durability. Factors such as sun exposure, constant humidity, and perspiration accelerate ageing. The ability to swap straps quickly allows rotation among multiple exemplars, distributing wear.

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