40.5mm Submariner Case with Chapter ring GMT/SUB Mod Parts for NH35 NH34 36 38 etc sapphire 10ATM

Build your ultimate custom diver with this 40.5mm Submariner-style watch case, designed for NH35, NH34, NH36, 4R35, and 4R36 movements. Crafted from precision stainless steel, it features a screw-down crown, a sapphire/mineral crystal, and 10ATM (100m) water resistance. The case comes with a ceramic bezel ring (outer diameter approx. 38mm) and a chapter ring (30.5mm × 27.5mm × 2.3mm) which can be customized in color. It fits 28.5mm–29mm dials and features a standard 20mm lug width. Choose between a solid or transparent glass caseback (please leave a note when ordering). This sterile, no-logo case is the perfect foundation for GMT and Sub mods.

Full Spec List:

• Product: 40.5mm SUB/GMT Watch Case

• Compatible Movements: NH35A / NH36 / NH34 / 4R35A / 4R36A

• Case Material: Stainless steel (No logo)

• Case Diameter: 40.5mm

• Case Thickness: 13mm

• Lug Width: 20mm

• Dial Fit: 28.5mm / 29mm

• Ceramic Bezel Ring: Outer diameter approx. 38mm, Inner diameter approx. 30.5mm

• Chapter Ring Size: 30.5mm × 27.5mm × 2.3mm (Custom colors available)

• Glass: Sapphire / Mineral glass

• Crown: Screw-down

• Caseback: Solid or Transparent (leave a note)

• Water Resistance: 3/5ATM (Deep diving design)

• Application: Custom builds, modding, Submariner/GMT projects