Description
Wichard HR D Shackle 20mm | Boat Supply Store
This Wichard HR D Shackle is engineered for extreme load capacities, exceeding standard 316L stainless steel options by up to 60%. Its forged HR 17.4 PH stainless steel construction provides a significant safety margin, with a breaking load of 28,000 kg (61,720 lb). It is ideal for offshore racing yachts or commercial fishing vessels operating in challenging Gulf Coast waters where structural integrity under sustained stress is non-negotiable.
Key Features
- Superior Strength: Forged HR 17.4 PH stainless steel construction.
- Exceptional Load Ratings: Boasts a breaking load of 28,000 kg (61,720 lb).
- Enhanced Durability: Up to 60% more resistant than 316L stainless steel shackles.
- High Working Load: Rated for 8,800 kg (19,400 lb) Working Load.
- Certified Quality: CE marked for assured compliance.
- Robust Dimensions: 20mm (25/32") diameter with a 70mm (2 3/4") overall length (A).
- Optimized for Rigging: Suitable for demanding rigging and attachment applications.
- Compact Form Factor: 40mm (1 37/64") internal width (B).
Specifications
| Product Specifications | |
|---|---|
| Diameter | 20mm (25/32") |
| Material | HR 17.4 PH Stainless Steel |
| Working Load (WL) | 19400 lb (8800 kg) |
| Breaking Load | 61720 lb (28000 kg) |
| WLL (Industrial) | 12340 lb (5600 kg) |
| Dimension A | 2 3/4" (70mm) |
| Dimension B | 1 37/64" (40mm) |
| Weight | 1.896 lb (860g) |
| Marking | CE |
Who This Is For
Marine professionals and serious DIYers requiring high-strength, durable attachment hardware for demanding applications such as rigging, block attachment, and headstay connections where exceptional load capacity and resistance are paramount. This shackle is essential for applications demanding the highest levels of safety and performance.
How It Compares
| Feature | Wichard HR D Shackle 20mm | Competitor |
|---|---|---|
| Material | HR 17.4 PH Stainless Steel | HR Stainless Steel |
| Diameter | 20mm (25/32") | — |
| Working Load Limit (WLL) (kg) | 5600 kg | — |
| Breaking Load (kg) | 28000 kg | — |
Common Concerns Answered
Why is the price point higher than standard 316L stainless steel shackles?
The elevated price reflects the advanced HR 17.4 PH stainless steel alloy used, which offers significantly superior tensile strength and corrosion resistance, resulting in a higher safety margin for critical load-bearing applications compared to standard 316L.
The Working Load Limit (WLL) is specified for industrial applications. How should this be interpreted for nautical use?
While the WLL of 5600 kg (12340 lb) is designated for industrial settings, the shackle's higher Breaking Load of 28000 kg (61720 lb) provides a substantial safety factor. For nautical applications, always consult with a qualified rigger or marine surveyor to determine the appropriate working load based on specific dynamic forces and safety regulations for your vessel and its intended use.
How does the resistance of an HR shackle compare to a 316L stainless steel shackle?
The Wichard HR D Shackle, constructed from HR 17.4 PH stainless steel, is up to 60% more resistant than a comparable shackle made from 316L stainless steel, offering enhanced performance and longevity under extreme loads and corrosive marine environments.
Frequently Asked Questions
What is the difference between Working Load (WL) and Working Load Limit (WLL) for this Wichard shackle?
The Working Load (WL) of 8800 kg (19400 lb) represents the maximum load the shackle is designed to handle in normal use, while the Working Load Limit (WLL) of 5600 kg (12340 lb) is a more conservative rating specified for industrial applications, incorporating additional safety factors. For nautical applications, the Breaking Load of 28000 kg (61720 lb) should always be considered in conjunction with dynamic loads and professional rigging advice.
What type of stainless steel is used in the Wichard HR D Shackle?
The Wichard HR D Shackle is forged from HR 17.4 PH stainless steel, a precipitation-hardening martensitic alloy renowned for its high strength, hardness, and good corrosion resistance.
What are the primary applications for the Wichard HR D Shackle?
Primary applications include demanding rigging operations, secure attachment of blocks and pulleys, headstay connections, and any scenario requiring exceptional load capacity and a high safety margin, particularly on performance-oriented sailing vessels or commercial marine equipment.
Can this shackle be used for mooring applications?
While the shackle possesses very high load ratings, its use for critical mooring applications should be determined by a qualified marine professional. Factors such as shock loads, chafe, and long-term exposure to extreme weather conditions must be evaluated to ensure suitability and safety.
How does the resistance of an HR shackle compare to a 316L stainless steel shackle?
The HR 17.4 PH stainless steel used in this Wichard shackle provides up to 60% greater resistance and strength compared to standard 316L stainless steel, making it the superior choice for applications where maximum load-bearing capacity and durability are essential.
