Halyard Shackle Long D Shackle Key Pin Type With Locking Pin & Cross Bar For Sailing & Marine Rigging

Marine Grade 316 SS Halyard Shackle – Long D Shackle Key Pin Type with Locking Pin & Cross Bar for Sailing, Marine Rigging & Webnet

1. Product Description

  The Marine Grade 316 SS Halyard Shackle – Long D Shackle Key Pin Type with Locking Pin & Cross Bar is a precision‑engineered, high‑strength rigging component specifically designed for sailing halyards, marine rigging, and webnet (safety net) tensioning systems. Manufactured from premium marine grade 316 stainless steel (A4) via precision casting, this long D shackle delivers exceptional resistance to saltwater, chlorides, and harsh marine environments. Grade 316 stainless steel contains molybdenum (2‑3%), providing superior corrosion resistance compared to 304 grade, particularly in saltwater and chemical environments.

  The shackle features a key pin (locking pin) with cross bar design. The key pin allows for tool‑free installation and resists loosening caused by vibration. The cross bar ensures the shackle remains securely in place on lines or pad eyes. The long D (extended body) profile provides additional clearance for thicker lines and hardware. The pin is easy to open and close by simply rotating it half a turn, with a captive pin design that prevents loss.

Available in sizes 5 mm, 6 mm, and 8 mm, with breaking loads of 1,000 kg, 1,600 kg, and 2,250 kg respectively. The polished surface finish provides a smooth, corrosion‑resistant, professional appearance.

Fully customizable in size, material, width, diameter, length, packaging, logo, and color. 100% load tested. Free samples supported. Ideal for sailing halyards, yacht rigging, marine mooring, boat fitting, light lifting, and webnet systems.

2.Product Attributes

Additional Specifications:

• Material: Marine grade 316 stainless steel (A4). 304 stainless steel available on request.

• Surface finish: Polished (bright). Other finishes (electro‑polished) available.

• Pin type: Key pin (locking pin) with cross bar (Table 0122) / locking pin only (Table 0121).

• Working load limit (WLL): Typically 1/4 to 1/5 of breaking load (safety factor 4:1 or 5:1).

• Processing: Precision casting.

2. Parameter Table

Table 01 – Halyard Shackle (Locking Pin)

Table 02 – Halyard Shackle (Locking Pin & Cross Bar)

Note: Both versions share identical dimensional specifications and breaking loads. Table 01 covers the standard locking pin version, while Table 02 includes the additional cross bar feature for enhanced security on lines or pad eyes. Cross bar design is particularly beneficial for halyard applications where the shackle must remain in place on the line.

3. Key Features

• Marine grade 316 stainless steel construction – Superior corrosion resistance for saltwater, coastal, and harsh marine environments. Grade 316 provides enhanced resistance to chlorides and harsh chemicals.

• Key pin (locking pin) with cross bar design – Provides secure locking mechanism. The key pin allows for tool‑free installation and resists loosening caused by vibration. The cross bar ensures the shackle remains in place on lines or pad eyes.

• Long D shape design – Extended body provides additional clearance for thicker lines, halyards, and hardware, making it ideal for applications requiring more room.

• Captive pin – Pin stays attached to the shackle body, preventing loss and ensuring quick, easy operation.

• Tool‑free operation – Pin is easy to open and close by simply rotating it half a turn, requiring no tools.

• High breaking load – Sizes from 5 mm to 8 mm with breaking loads from 1,000 kg to 2,250 kg, suitable for halyards, rigging, and light lifting.

• 100% load tested – Each shackle is proof‑tested to its rated breaking load, ensuring safety and reliability.

• Polished surface finish – Smooth, corrosion‑resistant, professional appearance; reduces crevices and makes cleaning easier.

• Fully customizable – Size, material, width, diameter, length, packaging, logo, and color can be tailored.

• Free samples & small orders – Available for quality verification before bulk order.

• Wide applications – Sailing halyards, yacht rigging, marine mooring, boat fitting, light lifting, and webnet systems.

4. Applications

The Marine Grade 316 SS Halyard Shackle is used in numerous demanding fields:

• Sailing & yacht rigging – Halyard connections to sails, reefing lines, topping lifts, spinnaker halyards, outhauls, and other repeated‑use applications. The tool‑free key pin design is ideal for applications where the shackle must be opened frequently.

• Marine mooring & boat fitting – Dock line attachments, flag halyards, fender lines, safety rail lashings, anchor chain connections.

• Webnet (safety net) systems – Tensioning and connecting stainless steel wire rope nets (webnets) for rockfall barriers, animal enclosures (zoos, aviaries), building facade safety nets, sports barriers, and fall arrest systems.

• Light lifting & hoisting – Small hoist connections, workshop lifting, light equipment handling.

• Industrial rigging – Stage equipment, theater lighting, cargo lashing, and general temporary fastening.

5. Technical Principles

5.1 Material & Casting Process

Marine grade 316 stainless steel provides excellent tensile strength and corrosion resistance in marine and industrial environments. The molybdenum content in Grade 316 delivers better overall corrosion resistance than Grade 304, particularly against chlorides in saltwater. The precision casting process creates the shackle shape with consistent dimensions and smooth surfaces. The polished finish provides a bright, corrosion‑resistant surface.

5.2 Key Pin & Cross Bar Locking Mechanism

The shackle features a key pin (locking pin) that provides a secure locking mechanism and resists loosening caused by vibration. The pin is opened and closed simply by rotating it half a turn, requiring no tools. The cross bar ensures the shackle remains securely in place on lines or pad eyes. The pin is captive, staying attached to the shackle body and preventing loss.

5.3 Long D Shape Design

The long D (extended body) profile provides 20%‑50% longer length than standard D‑type shackles, offering additional clearance for thicker lines, halyards, and hardware. The D‑shape geometry is designed for in‑line pulling and minimizes stress concentration at the pin holes.

5.4 Safety Factor

Shackles are designed with a typical safety factor of 4:1 or 5:1 (breaking load / working load limit). For example, an 8 mm shackle with a breaking load of 2,250 kg has a WLL of approximately 450–560 kg. Users must never exceed the WLL and must account for dynamic loads, angle of pull, and wear.

5.5 Corrosion Resistance

316 stainless steel forms a passive chromium oxide layer that protects against rust. The polished surface reduces crevices and makes cleaning easier. For saltwater environments, Grade 316 is the preferred choice for marine use.

5.6 Load Testing & Traceability

Each shackle is proof‑loaded to 100% of its rated breaking load. Permanent markings (size and grade) are stamped on the body for traceability.

About this supplier

Company Profile- anping county huihao wire mesh manufacture co.,ltd Huihao mainly produce: metal rings mesh, insulation fasteners, decoration metal mesh.

Huihao services include : pattern design frame design installation system design surface finished Mould customization