IWC
Pilot IW3713-48 (aka: IW371348)— lug 21mm
IWC Pilot IW3713-48 (aka: IW371348): 21mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 21mm lug width to preserve the original sartorial balance."
Technical Specifications
IWC IW3713-48 (aka: IW371348)The essential strap measurement.
Browse 21mm straps →IW3713-48 (aka: IW371348)
IWC caliber 79230 Hours, Minutes, Small Seconds | Date, Day | Chronograph, Rattrapante
The Heritage
Compatible Straps
Selected for the 21mm lug width of the Pilot
FAQ
What is the exact lug width of the IWC Pilot IW3713-48?
The IWC Pilot IW3713-48 features a lug width of 21 millimetres, a distinctive construction specification of this model. This dimension, inherited from aviator requirements in the 1960s, limits mainstream market options and requires bespoke straps for optimal fit.
Which strap material is most suitable for the IWC Pilot IW3713-48?
Alligator is the most eloquent choice due to its regular grain and patina development over time, creating striking contrast against the satin-brushed steel. Vegetable-tanned calf offers pronounced chromatic evolution, whilst textile NATO maintains the model's historical authenticity with military heritage.
How do you measure and change the strap on the IW3713-48?
Position a calliper between the metal pins of the case from shoulder to shoulder to obtain the internal measurement, then add the thickness of both lugs. For the IW3713-48, the result will always be 21 millimetres. Strap replacement involves removing the pins using a press or dedicated tool, an operation best performed by professionals.
Is an aftermarket 21mm strap compatible with the IWC Pilot IW3713-48?
Yes, any bespoke strap manufactured with 21mm lug width is perfectly compatible with the IW3713-48. Milano Straps supplies online straps customisable in leather, textile and rubber, available in standard sizes and bespoke orders for this specific width.
How long does a leather strap last on a daily-worn timepiece?
A quality leather strap, such as alligator or vegetable-tanned calf, maintains structural and aesthetic integrity between 3 to 5 years of daily use. Durability depends on exposure to moisture, direct sunlight and frequency of wear. Milano Straps straps include an 18-month warranty against manufacturing defects.
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 →By appointment only · Milan
The atelier's website: casatimilano.com