Hamilton · Khaki Field

Strap for Khaki Field Quartz 38 Stainless Steel / Black / Bracelet

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
ReferenceH69401131
FamilyKhaki Field
MovementETA caliber F06.105 hours, minutes, seconds
Year2025
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 H69401131

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Khaki Field H69401131, seen from the bench

The Hamilton Khaki Field H69401131 is a 38 mm stainless steel field watch with a black dial, baton indices, and Mercedes hands. It is powered by an ETA caliber F06.105 manual movement and features a sapphire crystal, screw-down caseback, and 100 metres water resistance. The 20 mm lug width accommodates a wide range of straps and is standard for mid-size sport and tactical watches. This robust instrument combines functional simplicity with reliable construction suitable for field operations.

Frequently asked questions

What is the lug width of the Hamilton Khaki Field H69401131?

The lug width of the H69401131 is 20 millimetres. This measurement corresponds to the distance between the horizontal pins connecting the case to the lugs. To verify, remove one pin using a spring bar tool and measure the space: you will find exactly 20mm. This width is standard for mid-sized sports and tactical watches.

Which strap is most suitable for the Hamilton Khaki Field H69401131?

The best strap depends on your intended use: for purely tactical application, a NATO in cotton or Cordura ensures versatility and quick changeover; for daily-elegant wear, a vegetable-tanned calf leather will develop a patina that narrates your actual use; for refined aesthetics, alligator offers characteristic texture with symmetrical grain. A vulcanised rubber strap is ideal for wet environments.

How do you change the strap on the H69401131?

Position the watch on a stable surface with the case facing downwards. Use a spring bar tool and insert it gently into the small side hole of the lug, pushing the pin inward: the spring-loaded pin will pop out. Repeat for the other side. Insert the new strap by aligning it with the lugs, then reinsert the pins until they click into place.

Are all 20mm straps compatible with the Hamilton Khaki Field H69401131?

Yes, any strap with a 20-millimetre lug width is physically compatible. However, the case diameter (38mm) influences the visual proportions: straps with excessive thickness may appear disproportionate. We recommend thicknesses between 3.5 and 4.5 millimetres to maintain aesthetic balance.

What is the lifespan of a leather strap for the H69401131?

A quality vegetable-tanned calf strap resists 3-4 years with daily use and regular maintenance (monthly cleaning, semi-annual conditioning with odourless wax). Alligator, with more resilient grain, can last 5-7 years. A cotton or Cordura NATO easily exceeds 10 years. Lifespan depends on environmental conditions: prolonged sun exposure and humidity accelerate ageing.

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