Longines · Conquest
Strap for Conquest 34 Stainless Steel / MOP / Bracelet
Takes 17 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Conquest L3.430.4.87.6 (aka: L34304876), seen from the bench
Frequently asked questions
What is the lug width of the Longines Conquest L3.430.4.87.6?
The lug width of the Longines Conquest L3.430.4.87.6 is 17mm. This measurement is critical when purchasing an aftermarket strap and is verified by placing a calliper between the two lug pins, perpendicular to their length.
What is the best strap for the Longines Conquest L3.430.4.87.6?
The optimal strap depends on intended use: alligator or shell cordovan represent the most sophisticated choices for formal contexts, whilst vegetable-tanned calf leather offers a balance between elegance and practicality. For sports wear, NATO nylon or fluoroelastomeric rubber guarantee maximum durability. All materials are available in 17mm configuration.
How do I change the strap on my Longines Conquest L3.430.4.87.6?
Strap replacement requires a dedicated tool (spring bar remover) or a small flat screwdriver. Insert it gently between the lug pin and the case, lift slightly to release the pin's tension, remove the worn strap. Position the new 17mm strap beneath the pin, then press the pin back into its seat until the safety click engages.
Is the Longines Conquest L3.430.4.87.6 compatible with aftermarket 17mm straps?
Yes, entirely. Any strap featuring 17mm lugs is compatible with this model. milanostraps.it's 17mm straps are available in dozens of material, colour and finish combinations, bespoke-customisable in length, initials and stitch thread.
How long does a leather strap last on the Longines Conquest L3.430.4.87.6?
A quality leather strap (alligator, shell cordovan, vegetable-tanned calf) typically lasts 3–5 years with daily wear, provided regular maintenance: avoid submersion, dry immediately if wet, apply conditioner every 6–8 months. Casati Milano straps include an 18-month guarantee 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 →Casati Milano · Via XX Settembre 15, Milan · by appointment only
