Hamilton
Jazzmaster H36205130— lug 20mm

The lug width of the Hamilton Jazzmaster H36205130 is 20 millimetres. This measurement represents the distance between the two vertical attachment points on the case and determines strap compatibility. It is essential to respect this specification to ensure a perfect fit without play or excessive tension.

For the 38mm Jazzmaster, we recommend materials that respect vintage aesthetics with contemporary versatility. Alligator or vegetable-tanned calf leather offer formal elegance; Tropic rubber ensures summer comfort; cotton NATO allows chromatic variations. The choice depends on intended use and desired aesthetic context.

Strap changing requires a specific tool (spring bar tool) to release the tension springs from the case lugs. Position the tool in the space between the lug and case, push the spring downward and slide the strap free. Reverse procedure for installing the new strap. We recommend working on a clean surface with adequate lighting.

Yes, provided the strap is specifically dimensioned for 20mm lug width. Quality artisanal straps respect this manufacturing tolerance. However, always verify that the strap does not present excessive thickness at the attachment zone, which could create tension on the case or make the passages difficult to open.

Leather strap durability depends on tanning method and usage patterns. Quality vegetable-tanned leather typically lasts 3–5 years with daily wear; chrome-tanned calf offers similar performance. The most frequent failure point is the pass-through loop (flex area), not the leather itself. Periodic maintenance with conditioning creams significantly extends strap lifespan.