Hamilton · Khaki Field

Strap for Khaki Field Quartz 38 Stainless Steel / 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 diameter38 mm
ReferenceH69401930
FamilyKhaki Field
MovementETA caliber F06.105 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 H69401930

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Khaki Field H69401930, seen from the bench

The Khaki Field represents Hamilton's military line, developed based on the watches provided to the American armed forces during World War II. It is equipped with the ETA F06.105 quartz caliber with hour, minute and second indications. The lugs measure 20mm for the strap.

Frequently asked questions

What is the lug width of the Hamilton Khaki Field H69401930?

The lug width of the H69401930 is 20mm. This dimension represents the distance between the two lateral attachment pins and is crucial for correct strap compatibility. A 20mm strap ensures a perfect fit without vertical play or instability. Measurement should be taken between the two upper pins, positioning the calliper perpendicular to the watch plane.

What strap is ideal for the Hamilton Khaki Field H69401930?

For the H69401930 we recommend three primary options: (1) A vegetable-tanned leather strap in Tuscan or Chromexcel for those desiring a natural patina that evolves over time, acquiring amber tones after months of wear. (2) A NATO strap in Cordura or nylon canvas for those prioritising practicality and quick replacability. (3) An FKM rubber in black or navy blue for sports activities and humid environments. The choice depends on actual usage and desired aesthetic direction.

How do you change the strap on the Hamilton Khaki Field H69401930?

Strap replacement is accomplished by removing the transverse pin connecting the strap to the lug. Using a spring bar tool or small screwdriver, compress the small internal elastic ring of the pin and extract the pin from the upper lug. Once the old strap is free, position the new strap under-lug and reintroduce the pin from the opposite side, ensuring the elastic ring clicks into position. Verify correct pin positioning to prevent accidental release during wear.

Can the strap supplied with the H69401930 be replaced with a 20mm aftermarket strap?

Yes, absolutely. The H69401930 is compatible with any quality 20mm strap, whether leather, NATO or rubber. The use of aftermarket straps is common practice in horology, enabling aesthetic personalisation and ergonomic adjustments specific to the wearer's wrist. We recommend verifying that the strap respects the 20mm attachment dimension to avoid misalignment or undesired play.

What is the expected lifespan of a leather strap for the Khaki Field H69401930?

A quality vegetable-tanned leather strap has an average lifespan of 3-5 years with daily wear, varying according to intensity of exposure to moisture, perspiration and extreme temperatures. Chromexcel or Tuscan leather develops a natural patina within the first 6-12 months, increasing aesthetic appeal. To prolong lifespan, we recommend avoiding prolonged exposure to fresh water, gently drying after perspiration or rain, and occasionally applying a balsam specific to vegetable-tanned leather. Periodic replacement is part of the charm of artisanal horology: each new strap represents an opportunity for personalisation.

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