Hamilton · Khaki Aviation

Strap for Khaki Aviation X-Mach

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

Lug width22 mm
Case diameter44 mm
ReferenceH76686735
FamilyKhaki Aviation
MovementHamilton caliber H-21 [day - date] hours, minutes, small seconds | date, day | Chronograph
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 Aviation H76686735

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Khaki Aviation H76686735, seen from the bench

The Khaki Aviation H76686735 is equipped with the Hamilton H-21 caliber that offers hour, minute, small seconds, date, day and chronograph functions. The watch features 22mm lugs and combines chronograph functions with a full day and date indication. The movement provides the typical functionality of an aviation chronograph with calendar complications.

Frequently asked questions

What is the lug width of the Hamilton Khaki Aviation H76686735?

The lug width of the Hamilton Khaki Aviation H76686735 is 22mm. This measurement is calculated from the distance between the horizontal case lugs and ensures balanced proportions with the 44mm case diameter. You can verify strap compatibility by measuring the external width of the lugs with a calliper; it must be exactly 22mm.

Which strap is best suited for the Khaki Aviation H76686735?

For the Khaki Aviation H76686735, we recommend a strap in alligator leather with vegetable tanning, which develops a deep patina over time and dialogues perfectly with the brushed stainless steel case finish. Alternatively, a robust NATO strap in military-grade fabric echoes the original aviatory spirit, whilst a nappa calf leather strap with water-repellent treatment offers elevated comfort without sacrificing sobriety.

How do you change the strap on the Hamilton Khaki Aviation H76686735?

Changing the strap on the Khaki Aviation H76686735 is performed by removing the springbars using a dedicated spring bar tool. Position the tool on one of the two lateral pins, compress gently to release the lug from the hole, repeat on the other side. Insert the new strap by aligning the lug with the holes and press until you hear the click. Verify that both sides are securely locked before wearing the watch.

Is an aftermarket strap compatible with the Hamilton H76686735?

Yes, any strap with a 22mm lug width is compatible with the Hamilton H76686735. Ensure that the external width of the lugs is exactly 22mm and that the total length allows comfortable closure around the wrist. Artisanal Milanese vegetable-tanned leather straps are specifically designed for this measurement and guarantee superior quality.

What is the lifespan of a natural leather strap on the Khaki Aviation H76686735?

A natural leather strap with vegetable tanning has a lifespan of 4-7 years under regular use and proper maintenance. Longevity depends on exposure to moisture, perspiration and repetitive movements. With periodic cleaning and annual water-repellent treatment, the strap develops a protective patina that further extends its operational life, transforming into a unique personal artefact.

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