Strap for Khaki Pilot Day Date Stainless Steel / Black / Bracelet

The Hamilton Khaki Aviation H64645131 features a lug width of 20 mm. This specification is standard across Hamilton's aviation models and is essential for ordering a compatible strap. Always measure the internal distance between the lugs (also called lug-to-lug width) before purchasing an aftermarket strap.

The recommendation depends on your intended use and personal preference. For formal occasions, consider an alligator or vegetable-tanned calf strap in cognac or brown tones. To emphasise the tool-watch character, a nylon NATO strap in military shades is ideal. If you'll use it for sports or water activities, a rubber strap with canalled texture offers excellent grip and easy maintenance. All our 20mm straps on MilanoStraps are fully compatible with this model.

You'll need two tools: a spring bar tool and a stable work surface. Position the watch with the case parallel to the table, insert the tool into the lateral groove of the lug and gently push downward to release the internal spring, then extract the spring bar. Repeat on the opposite lug. To fit the new strap, reverse the procedure, ensuring the spring bar is fully inserted into both seats. If unsure, consult a professional watchmaker.

Yes, provided the strap has a 20 mm lug width. The H64645131 uses standard spring bars, meaning any quality strap with this lug width will fit perfectly. MilanoStraps offers a curated selection of artisanal 20mm straps in premium materials (leather, NATO, rubber) that have been tested for compatibility with Hamilton timepieces.

Durability depends on leather quality and intensity of use. A high-quality vegetable-tanned leather strap, such as those from MilanoStraps, typically lasts 18 to 36 months of daily wear before showing significant signs of deterioration. Direct sunlight exposure, perspiration, and humidity accelerate ageing. However, the patina that develops over time is part of the charm of natural leather. To extend strap life, allow it to air-dry after exposure to moisture and occasionally treat it with specialised leather care products.