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Views: 222 Author: Loretta Publish Time: 2025-09-20 Origin: Site
Content Menu
● Understanding Joining Shackles
● Prominent Joining Shackle Manufacturers in America
>> American Drill Bushings Company
>> Charleston's Rigging & Marine Hardware
>> CM Manufacturing (Made in USA)
● Quality Standards and Certifications
● Technical Specifications and Industry Standards
● OEM Services by American Joining Shackle Suppliers
● Innovations and Material Advancements
● Key Applications of Joining Shackles
● How to Select the Right Joining Shackle Manufacturer and Supplier
● FAQs
>> 1. What types of joining shackles are predominantly used in marine applications?
>> 2. Are joining shackles made in America compliant with international safety standards?
>> 3. Can joining shackles be customized through OEM services?
>> 4. What materials are commonly used to manufacture joining shackles?
>> 5. How is quality and safety assured in joining shackles?
Joining shackles are indispensable components used primarily in maritime, offshore, industrial, and construction sectors. They form the crucial connections between anchor chains, lifting equipment, and mooring lines. Known for their high strength and reliable performance under extreme conditions, joining shackles ensure the safety and efficiency of operations requiring secure chain connections. This article delves into the top joining shackle manufacturers and suppliers in America, highlighting their products, certifications, and the critical role they play in global supply chains.
A joining shackle serves as a mechanical link that connects two chain ends or chain sections. This connection allows for easy assembly or repair while maintaining the structural integrity of chains used in heavy-duty applications. The primary types of joining shackles include the Kenter type, D type, and pear-shaped shackles. Each type is designed to accommodate specific operational requirements and chain configurations.
- Kenter Joining Shackle: This is a detachable, two-part shackle consisting of a chock and a taper pin. It is widely used in marine anchor chains due to its strong and secure connection, which can be easily assembled or disassembled without welding.
- D Type Joining Shackle: Used to join two studless chain ends, the D type shackle features a tapered pin that provides a robust, secure link for connecting anchor chains and mooring cables.
- Pear Shackle: Featuring a pear-shaped design, this shackle is often used as a substitute for Kenter shackles in certain applications, providing flexibility in how anchor chains link to anchors or other equipment.
America hosts several manufacturers and suppliers known for their commitment to quality, innovation, and customer-centric OEM services. These businesses cater extensively to marine, offshore, industrial, and construction markets.
Certified under ISO 9001:2008, American Drill Bushings Company manufactures a broad range of anchor shackles. Their offerings include bolt-type anchor shackles designed with bolt, nut, and cotter pin assemblies. These shackles vary in size from 7/8 inch to 1-1/4 inch nominal diameter and have working load limits reaching up to 24,000 lbs. Their products conform to rigorous federal standards ensuring reliability in industrial and marine environments.
Charleston's Rigging & Marine Hardware excels in producing and distributing a variety of shackles, including anchor shackles, chain shackles, and guy rope shackles. Besides manufacturing, they provide comprehensive services such as rigging load testing and equipment rental, servicing marine and construction industry clients.
Known for galvanized screw pin anchor shackles made of stainless steel, Automotive Fasteners offers capacities from 1,000 lbs to 70,000 lbs. These shackles are ideal for welding chain assemblies to anchors or different heavy-duty attachments, blending versatility with strength.
CM Manufacturing specializes in high-strength carbon steel screw pin anchor shackles. Their American-made products are designed for heavy lifting and rigging applications, earning trust through their superior strength and safety performance.
Top joining shackle manufacturers in America ensure compliance with strict quality standards and certifications, including but not limited to:
- ISO 9001 Quality Management Systems
- ABS, DNV, BV, GL, and LR Class certifications for marine and offshore use
- Federal Specification RR-C, Type IVA for anchor shackles
- Adherence to International Organization for Standardization (ISO) standards such as ISO 1704:2022 for nominal dimensions and mechanical properties
These certifications guarantee shackles meet the highest requirements for strength, traceability, and safety.
The joining shackles produced follow scientific design principles and standards that govern their size, mechanical properties, and testing methods:
- Nominal Diameter: Defined as the design diameter at the crown of the common link, measured after proof load tests.
- Material Requirements: Typically, shackles are forged from alloy steel, carbon steel, or stainless steel with specific mechanical properties for strength and durability.
- Taper Pins: The pins used in D type and Kenter shackles are specified with precise taper ratios (e.g., 1:50 to 1:16 for D type), ensuring secure fastening.
- Proof Load Testing: Shackles undergo proof load tests where they are subjected to loads higher than their rated capacities to verify structural integrity and safety.
Such rigorous standards underpin the functional reliability of joining shackles in demanding conditions.
OEM services are a significant aspect of joining shackle supply in America. These manufacturers provide tailored products and packaging to meet the unique needs of international brands, wholesalers, and producers. Features of OEM services include:
- Customized shackle sizes and construction materials
- Special surface finishes such as galvanizing, black paint, or special coatings for corrosion resistance
- Versatile packaging and branding options to suit market demands
- Compliance with both American and international industry standards
OEM partnerships foster innovation and supply chain flexibility, ensuring clients receive products that precisely fit their operational needs.
Modern joining shackles incorporate advanced metallurgy and manufacturing processes that enhance safety and performance:
- High-Strength Alloys: Use of quenched and tempered steels which significantly increase load-bearing capabilities.
- Precision Forging: Techniques that guarantee dimensional accuracy and uniform mechanical properties.
- Corrosion Resistance: Surface treatments and coatings like galvanizing and black oxide painting extend service life, especially in marine environments.
- Safety Features: Design improvements such as secure pin locking mechanisms and quick-release components enable safer and faster rigging operations.
These innovations push the boundaries of what joining shackles can achieve in terms of durability, safety, and functionality.
Joining shackles are integral in various critical sectors:
- Maritime and Offshore: Connecting anchor chains, mooring lines, and offshore platform rigging.
- Construction and Heavy Lifting: Securing heavy equipment, lifting loads, and attaching rigging hardware.
- Industrial Manufacturing: Use in conveyor systems, chain assemblies, and safety-critical connection points.
- Transport and Logistics: Ensuring load integrity during material handling and movement.
Understanding these applications guides selection and specification of appropriate joining shackle types and grades.
Choosing a manufacturer or supplier in America should focus on several factors:
- Proven quality certifications and industry compliance
- A broad product portfolio and ability to customize
- Reliable OEM and after-sales support
- Competitive pricing and dependable delivery schedules
- Strong reputation within marine, industrial, and offshore markets
Due diligence in these areas secures not only quality but also service excellence.
Joining shackles play a pivotal role in the safety and functionality of anchoring, lifting, and mooring systems. American manufacturers and suppliers lead the industry with superior product quality, adherence to international standards, and comprehensive OEM capabilities. Their innovation and reliable service make them trusted partners for global industries requiring secure and durable chain connections. Partnering with top joining shackle manufacturers in America ensures access to robust, certifiable, and customized solutions tailored for diverse applications.
The Kenter joining shackle is predominantly used in marine applications owing to its detachable, secure design consisting of two halves clamped by a taper pin, providing strength and easy maintenance.
Yes, leading American joining shackle manufacturers comply with major international standards such as ISO 9001, ISO 1704 for dimensional and mechanical properties, and certifications like ABS, DNV, and federal specifications.
Definitely. American manufacturers offer extensive OEM services, enabling customization in sizes, materials, coatings, markings, and packaging to meet specific client requirements and market regulations.
Joining shackles are typically made from high-strength alloy steel, carbon steel, or stainless steel, often treated with corrosion-resistant coatings like galvanization or black oxide paint to enhance durability.
Quality is assured through strict adherence to manufacturing standards, material traceability, proof load testing, and obtaining relevant certifications to ensure shackles can withstand expected service loads safely.
[1](https://cdn.standards.iteh.ai/samples/77746/bf35a8e6871a4fcaabbef575f43d1dab/ISO-1704-2022.pdf)
[2](https://cdn.standards.iteh.ai/samples/77746/88eb2ceadfda4aadb64a03dac32c8d05/ISO-FDIS-1704.pdf)
[3](https://gnweb.com/files/Catalogue/Shackles/PDF-shackles/d16.pdf)
[4](https://nsdctg.navy.mil.bd/storage/upload/specification/922.47736-Spec47736.pdf)
[5](http://www.lhrmarine.com/media/downloads/d-type-joining-shackle-data-sheet.pdf)
[6](https://beavereng.com.au/anchor-chain-and-fittings/d-type-joining-shackles/)
[7](https://www.dlhonline.co.uk/media/wysiwyg/dlhonline/PDF/shackles.pdf)
[8](https://www.williamhackett.co.uk/files/1742910111_540846aecf0abd3108d7.pdf)
[9](https://hilifting.com/product/kenter-type-joining-shackle/)
[10](https://www.irizarforge.com/en/smart-con-link-kenter-joining-shackle)
