Hamilton · Khaki Field

Strap for Khaki Field Mechanical 38 White

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

Lug width20 mm
Case diameter38 mm
ReferenceH69439910
FamilyKhaki Field
MovementHamilton caliber H-50 ND hours, minutes, seconds
Year2024
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 H69439910

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Khaki Field H69439910, seen from the bench

The Hamilton Khaki Field Mechanical H69439910 is a 38mm field watch featuring the Hamilton H-50 ND automatic movement operating at 4 Hz. The stainless steel 316L case measures 38.00mm in diameter with 10.7mm thickness, offering 100-meter water resistance and an anti-reflective sapphire crystal. The 20mm lug width is a specific construction characteristic of this 38mm Khaki Field model. Designed for professionals requiring absolute reliability, this instrument watch combines a high-legibility black dial with luminescent stick indices and a matte satin-finished case.

Frequently asked questions

What is the exact lug width of the Hamilton Khaki Field H69439910?

The H69439910 features 20mm lug width, a specific measurement for the 38mm Khaki Field line. It is essential to measure precisely at the inner contact points of the lugs before ordering a strap, as 20mm is not a standard dimension readily available in generic catalogues.

Which type of strap is recommended for the Khaki Field H69439910?

It depends on intended use. To maintain the original field-oriented identity, a vegetable-tanned calf leather or shell cordovan strap offers natural patina and durability. For tactical or aquatic environments, a ballistic nylon NATO is ideal. A FKM rubber strap with deployante is perfect for all-day wear and chemical resistance.

How do you change the strap on a Hamilton Khaki Field?

Use a spring bar tool: position yourself on one side of the case, apply slight inward pressure on the lug toward the centre to create tension, then extract the spring bar parallel to the dial. Remove the old strap and insert the new one by aligning its ends with the lug seats, reinserting the spring bars from the same angle.

Is there an aftermarket strap compatible with the 20mm lug width of the H69439910?

Yes, but you must explicitly select straps specified for 20mm lug width, not 18mm or 22mm. Milano Straps offers a dedicated collection of leather, NATO, and rubber straps in this specific dimension, all ready for dispatch and customisable according to colour and material preferences.

What is the average lifespan of a leather strap on a watch like the H69439910?

A quality leather strap, worn daily, maintains structural integrity for approximately 3 to 5 years. Vegetable-tanned leather ages naturally, developing patina and surface creasing; shell cordovan lasts longer. Excessive humidity and prolonged sun exposure accelerate ageing. Periodic maintenance with neutral balms and storage in a dry environment significantly extends useful life.

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