Hamilton
Khaki Navy H64551957— lug 20mm
Hamilton Khaki Navy H64551957: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Hamilton H64551957The essential strap measurement.
Browse 20mm straps →H64551957
ETA caliber 955.132 Hours, Minutes, Seconds | Date, Day
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Khaki Navy
FAQ
What is the lug width of the Hamilton Khaki Navy H64551957?
The lug width of the Hamilton Khaki Navy H64551957 is 20mm. This measurement represents the distance between the two spring bars that secure the strap to the case. Any compatible strap must possess exactly this width to ensure secure fitting and eliminate unnecessary movement or oscillation.
Which strap is recommended for the Hamilton Khaki Navy H64551957?
For this model, we recommend straps in vegetable-tanned alligator (fine grain, cognac or Havana brown tones) or shell cordovan leather (natural lustre, superior longevity). In authentic operational contexts, a NATO strap in nylon-cotton or FKM rubber fully expresses the military vocation of the watch. A deployante clasp in stainless steel ensures secure fastening without the need for adjustment notches.
How do you change the strap on a Hamilton Khaki Navy H64551957?
The procedure requires a spring bar removal tool. Rest the watch on a soft surface. Locate the steel spring bars protruding from the case at 12 and 6 o'clock. Insert the tool tip under the lower spring bar, applying upward pressure to compress the internal spring. Once the spring bar is released, extract the old strap. Repeat the operation on the upper spring bar. Installation of the new strap proceeds in reverse: insert it through one spring bar, compress the second, and ensure both spring bars are fully seated in the case lugs.
Which aftermarket straps are compatible with the Hamilton Khaki Navy H64551957?
All straps with a 20mm lug width are compatible. Milano Straps offers an extensive range: vegetable-tanned leather (alligator, calf, suede, nubuck), NATO-style straps in woven textile, FKM rubber for underwater use, and aged natural leather models with patina. Every strap in the 20mm collection guarantees precise fitment and artisanal quality verified by Atelier Casati Milano.
How long does a leather strap last on a watch like the Hamilton Khaki Navy H64551957?
A vegetable-tanned leather strap, worn daily, maintains functionality and aesthetics for 10 to 15 years. Durability depends on environmental factors: humidity, direct sunlight, and repetitive movement accelerate ageing. A shell cordovan strap resists longer (15-20 years) due to greater fibre density. Routine maintenance—occasional cleaning with a damp sponge, annual conditioning with neutral oil—extends operational life and accelerates patina formation, which is a mark of authentic use, not deterioration.