Hamilton
Khaki Navy H77311615— lug 18mm
Hamilton Khaki Navy H77311615: 18mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 18mm lug width to preserve the original sartorial balance."
Technical Specifications
Hamilton H77311615The essential strap measurement.
Browse 18mm straps →H77311615
ETA caliber 955.112 Hours, Minutes, Seconds | Date
The Heritage
Compatible Straps
Selected for the 18mm lug width of the Khaki Navy
FAQ
What is the lug width of the Hamilton Khaki Navy H77311615?
The Hamilton Khaki Navy H77311615 is fitted with 18-millimetre lugs (internal width between spring bars). This dimension is critical for aftermarket strap compatibility. Ensure the thickness of any replacement strap does not exceed 2.5–3mm at the fold point to avoid lateral play between lug and strap material.
What is the best strap for the Hamilton Khaki Navy H77311615?
Selection depends on intended use. For formal elegance, alligator in cognac brown or shell cordovan in black delivers visual cohesion with the navy dial. For daily wear, vegetable-tanned calf in bourbon tone balances aesthetics and durability. NATO in dark blue or black provides versatility and swift changeover. For aquatic environments, butyl rubber ensures water resistance and maintains elasticity under humidity exposure.
How do I change the strap on the Hamilton Khaki Navy H77311615?
Insert the tip of a spring bar tool into the lateral notches of the spring bar pins securing the strap to the lugs. Apply gentle lateral pressure to push the pin inward, releasing the hole. Remove the old strap. Align the new strap's ends with the holes and reinserting the pins. The procedure takes approximately two minutes and requires no specialised expertise.
Is an 18mm aftermarket strap truly compatible with the H77311615?
Mechanical compatibility is guaranteed if the strap carries an 18mm lug width. However, verify that thickness does not exceed 3mm to prevent lateral play. Check that the lug depth aligns with the case specifications (approximately 4.5mm). We recommend sourcing straps from specialised retailers who provide comparative imagery and precise technical specifications.
How long does a leather strap last on the Khaki Navy H77311615?
A quality leather strap (alligator, shell cordovan, vegetable-tanned calf) typically lasts 3–5 years with daily use and proper maintenance. Longevity depends on humidity exposure, UV radiation and cleaning frequency. Vegetable-tanned leather develops a desirable patina, whilst aniline leather requires periodic conditioning. To extend lifespan, store the strap in a dry environment and clean regularly with a soft, slightly dampened cloth.