A wide Dee (D) shackle with an inner hexagon pin is a specialized rigging connector that combines an extra-wide opening with a completely flush, low-profile screw pin. Instead of using a traditional pin with a protruding head or eye loop, the pin features an internal hex socket (Allen key drive). When fully tightened, the pin sits completely flat or countersunk inside the shackle arm, creating a smooth, snag-free exterior.
Key Features
Expanded Width Clearance: The straight-sided "U" or "D" body is forged wider than a standard shackle. This allows it to pass over thick hardware, bulky web slings, or wide structural mounting tabs without pinching.
Zero Protrusion (Snag-Free): The inner hexagon pin eliminates protruding metal parts. Ropes, sails, nets, and clothing can slide over the shackle completely uninterrupted without catching or tearing.
Tamper & Theft Resistance: The shackle cannot be unscrewed by hand or with standard pliers. It requires a specific size Allen wrench (hex key) to lock or unlock, offering basic security for public or permanent installations.
Reduced Side-Load Capacity: Because the body is wider, the pin is naturally longer. This creates greater leverage on the center of the pin under stress. Consequently, wide D shackles generally have a lower working load limit (WLL) than standard-width D shackles of the exact same metal thickness, and they must only be loaded in a straight, in-line direction.
Premium Materials: These are predominantly manufactured from precision-cast 316 marine-grade stainless steel to resist rust, saltwater corrosion, and harsh chemical weathering.
Primary Applications
Mooring and Buoy Rigging: Commonly used to connect heavy mooring chains to the wide, thick steel tabs found on mooring buoys. The flush hex pin prevents the buoy from getting damaged or caught on floating debris.
Architectural & Balustrade Installations: Frequently used in modern wire-rope railing systems, public awnings, and architectural displays where a highly clean, streamlined visual appearance is desired.
Marine Deck Hardware: Ideal for high-traffic deck spaces on yachts and commercial vessels where lines must slide past the shackle frequently without snagging.
If you are evaluating this hardware for a specific task, let me know what kind of connection point you are slipping it over and how much weight it needs to support so we can ensure the inner width and load ratings match your safety needs.
