Bulkhead pass-through for connectors up to Ø21 mm, 4-9 mm cable - black composite

The Scanstrut DS21A-P-BLK cable gland is a watertight sealing solution designed for routing cables with connectors through a boat's deck or bulkhead. It provides reliable protection against water ingress for onboard electronic systems.

The DS21A-P-BLK deck gland is made of black composite. The 'P' in the model name indicates it is a plastic/composite version.

Yes, this deck pass-through belongs to Scanstrut’s "Seal / Vertical" deck gland family, meaning it is specifically designed for vertical installations.

The DS21A-P-BLK deck plug is black, as indicated by "BLK" in its product reference.

Yes, the Scanstrut DS21A-P-BLK deck gland is designed to provide reliable watertight sealing when routing cables and connectors through the deck, protecting the interior of your vessel from water ingress.

The DS21A-P-BLK through-hull fitting can accommodate connectors with a maximum diameter of Ø21 mm.

This deck gland is designed for cables with a diameter ranging from 4 mm to 9 mm.

No, the DS21A-P-BLK deck gland is specifically designed for cables with a diameter between 4 mm and 9 mm. For 10 mm cables, you should consider a different model, such as the DS21B, which supports cables from 9 to 14 mm.

The DS21A and DS21B models share the same connector drilling diameter (Ø21 mm) and the same external dimensions. The main difference lies in the cable diameter range they can accommodate: the DS21A is for 4–9 mm cables, while the DS21B is for larger 9–14 mm cables.

Yes, although it is designed to facilitate the insertion of connectors, it can also be used for cables without connectors, provided the cable diameter is between 4 mm and 9 mm and you use the appropriate bung.

Yes, using silicone is recommended and necessary to ensure optimal watertightness during the deck-through installation and prevent any water ingress.

You must select the bung provided in the kit whose inner diameter is closest to that of your cable. The DS21A kit includes multiple bungs to cover cable diameters from 4 to 9 mm.

Recommended pilot hole sizes for screws vary depending on the material of your mounting surface:

For soft materials (e.g., plywood): Ø2.5 mm (3/32 in)For hard materials (e.g., acrylic, hardwoods): Ø3 mm (1/8 in)

Yes, it is advisable to freeze the bung before drilling it. This will make the material more rigid and facilitate a clean cut.

The DS21A-P-BLK cable gland is designed for passing a single cable with a connector at a time, using the bung that matches the diameter of that single cable.