Hamilton · Khaki Field

Strap for Khaki Field Automatic Chronograph 42

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

Lug width22 mm
Case diameter42 mm
ReferenceH71566583
FamilyKhaki Field
MovementETA caliber 7750 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 Field H71566583

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Khaki Field H71566583, seen from the bench

The Khaki Field represents Hamilton's military line, characterized by a functional field design. It houses the automatic ETA 7750 caliber with chronograph, date and day of the week functions. The lugs measure 22mm in width.

Frequently asked questions

What is the lug width of the Hamilton Khaki Field H71566583?

The lug width of the Hamilton Khaki Field H71566583 is 22mm. This measurement is the standard for chronographs in this category and ensures compatibility with the entire range of aftermarket 22mm straps available, from vegetable-tanned leather to NATO fabric, from vulcanised rubber to exotic skins.

Which strap is recommended for the Khaki Field H71566583?

For the Khaki Field H71566583, we recommend vegetable-tanned leather in brown or cognac tones to emphasise the watch's historical character whilst developing natural patina over time. Alternatively, a premium NATO strap in dense fabric with rubber backing provides maximum practicality and water resistance, ideal for active environments. For formal wear, black polished shell cordovan transforms the model into a boardroom chronograph with refined elegance.

How do I change the strap on the Hamilton Khaki Field H71566583?

To change the strap: 1) position the watch on a soft surface; 2) locate the two spring bars connecting the lugs to the strap, one on each side; 3) use a dedicated spring bar removal tool to press towards the centre of the case and release the bar; 4) remove the old strap; 5) align the new strap with the lugs and reinsert the bar until a tactile click is felt. The operation takes approximately five minutes and requires only a spring bar removal tool.

Is an aftermarket strap with 22mm lug width truly compatible with the H71566583?

Yes, any strap with a 22mm lug width is fully compatible with the Khaki Field H71566583. Compatibility is determined by the lug width measurement, not by watch brand. Simply verify that the strap's spring bars have the same diameter (typically 1.5mm for this category), which is easily confirmed on the packaging or manufacturer's specifications.

How long does a leather strap last on the Khaki Field H71566583?

A high-quality vegetable-tanned leather strap, with moderate daily use, maintains structural and aesthetic integrity for 3-4 years. If exposed to frequent moisture, direct saltwater contact, or intense perspiration, durability reduces to approximately 2 years. Shell cordovan, with periodic maintenance, resists for 4-5 years. NATO and vulcanised rubber ensure 5-7 years of service. Longevity depends on frequency of wear, climate, weekly rest periods, and maintenance—regular cleaning, drying, and periodic leather conditioning significantly extend lifespan.

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