Hamilton · Khaki Aviation

Strap for Khaki Aviation Pilot Schott NYC - Limited Edition

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

Lug width22 mm
Case diameter46 mm
ReferenceH64735561
FamilyKhaki Aviation
MovementHamilton caliber H-30 Hours, Minutes, Seconds | Date, Day
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 H64735561

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Khaki Aviation H64735561, seen from the bench

The Hamilton Khaki Aviation H64735561 is a 46mm stainless steel watch featuring the Hamilton caliber H-30 quartz movement with date and day-of-week complications. The watch maintains the essential design language of 1940s aviation instruments with a matte black dial, white indices, and baton hands under a sapphire crystal. The transparent caseback allows viewing of the movement. The 22mm lug width is proportioned to balance the 46mm case diameter and weight distribution on the wrist.

Frequently asked questions

What is the lug width of the Hamilton Khaki Aviation H64735561?

The lug width of the Hamilton Khaki Aviation H64735561 is 22mm. This measurement is determined by the proportion between the 46mm case diameter and the geometry of the lugs. To verify it yourself, position a ruler perpendicular to the inner shoulders of both lugs: the value in millimetres you read is precisely 22mm.

What is the best strap for the Hamilton Khaki Aviation H64735561?

There is no single "best" strap in absolute terms, but rather the choice that aligns with your intended use. For the model's aviation heritage we recommend: alligator with vegetable tanning for lasting elegance; calf leather for daily versatility; NATO in cotton or linen for authentic military practicality; rubber to emphasise its technical-instrumental character. The 22mm width accommodates all these solutions without constructive compromise.

How do I change the strap on my Hamilton Khaki Aviation H64735561?

Remove the watch from your wrist. Using a flat-head lever tool (spring bar tool) or dedicated instrument, press gently inward on the spring mechanism inside the lug. This allows the pin to slip from its seat. Repeat for both lugs. To install your new 22mm strap, insert the pins through the strap holes until the springs click back into their seats. Ensure the strap is perfectly aligned before wearing the watch.

Is an aftermarket 22mm strap compatible with the Hamilton Khaki Aviation H64735561?

Yes, any quality artisanal strap manufactured for 22mm lug width is compatible with the Khaki Aviation H64735561. Compatibility is determined solely by lug width, not the watch brand. Artisanal straps in leather, NATO and rubber from specialised manufacturers guarantee impeccable finishes and dimensional accuracy superior to industrial alternatives.

How long does a leather strap last on the Hamilton Khaki Aviation H64735561?

Durability depends on the material, usage and maintenance. High-quality vegetable-tanned alligator can last 5-10 years in regular use, developing a desirable patina over time. Good calf leather typically lasts 3-5 years. Rubber has indefinite durability, though its consistency may change after years. Leather ageing is not deterioration but an aesthetic process where the strap acquires character and uniqueness. You can always replace a worn strap without compromising the watch itself.

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