Stainless steel shackle D 4 mm – code: 08.321.04 – Osculati

Stainless steel D shackle 4 mm Osculati – code 08.321.04

The stainless steel D shackle Osculati is a hardware component designed to create reliable connections between elements such as ropes, chains, cables, and onboard accessories. This version is identified by code 08.321.04 and features diameter 4 mm, a compact and practical size for many assembly and maintenance needs in nautical and plant engineering fields.

Made of AISI 316 stainless steel with finish polished, it is suitable when a solution that is also aesthetically pleasing is desired, as well as being suitable for contexts where stainless steel is commonly preferred. The “D” shape promotes an orderly connection and a load distribution consistent with the typical use of this geometry.

Features and construction details

Material and finish

• Material: stainless steel AISI 316.
• Finishing: polished, with processing declared as mirror polishing.
• Manufacturing: forged (as per the manufacturer's description).

The combination of forging and polishing makes the shackle suitable for installations where a well-finished component consistent with typical stainless steel hardware for decks and onboard systems is sought.

D shape

The profile D is a common choice when a compact and “clean” connection is desired, with limited bulk and a geometry that facilitates pairing with terminals, thimbles, eye bolts, and other anchoring points. In many configurations, the D shape helps keep the assembly tidier compared to other geometries, especially in confined spaces.

Variant data (code 08.321.04)

For this specific version, the following data are available:

• A: 4 mm
• B: 8 mm
• D: 8 mm
• L1: 16 mm
• Working load: 148 kg
• Breaking load: 580 kg

Note: the values shown are those associated with the selected variant identified by the indicated product code.

Typical applications (nautical and plant engineering)

A stainless steel D shackle like this is normally used for connections and joints where it is useful to be able to quickly disassemble and reassemble the connection point, while maintaining a robust and well-finished metal component.

Examples of use

• Connection between ropes and accessories (for example terminals or prepared attachment points).
• Connection between chain and compatible hardware components.
• Assemblies and small interventions of onboard maintenance where a removable element is required.
• Uses in plant engineering and technical hardware where stainless steel is preferred for uniformity with other components.

The choice of the correct size depends on the assembly in which the shackle is inserted (diameters, available spaces, and connected components). In case of doubt, it is advisable to check the dimensions A/B/D/L1 and consistency with the other elements of the line.

Advantages

• AISI 316 stainless steel: material widely used in nautical and technical fields when stainless steel hardware is desired.
• Polished finish: careful appearance, suitable for visible installations and contexts where the hardware must integrate with other polished components.
• D shape: compact and neat solution for connections and joints.
• Forged component: construction indication provided by the manufacturer, typical of hardware intended for technical applications.
• Load data available: presence of working load and breaking load associated with the variant, useful for a more informed choice.

Usage and operational notes

Size selection

Before purchase or installation, check:

• that the diameter 4 mm that it is consistent with the component to be connected and with the attachment point;
• that the dimensions B, D and L1 are compatible with the available space;
• that the values of working load and breaking load are adequate for the intended application.

Installation and inspection

In a nautical or plant engineering context, it is good practice to:

• mount the shackle so that the coupling with other elements is aligned and without interference;
• carry out periodic checks of the hardware condition, especially if the component is subject to frequent disassembly or demanding operating conditions;
• avoid improper combinations with components that are not compatible in size or geometry.

To maintain the appearance of the polished finish, it is possible to perform regular cleaning with products suitable for stainless steel, according to the maintenance procedures adopted on board or in the workshop.

Product identification

• Brand / supplier: Osculati S.r.l.
• Supplier code: 08.321.04

If you are comparing multiple variants of the same series, always make sure to select the correct code: the size and associated values may change depending on the variant.

FAQ – Frequently Asked Questions

What material is the Osculati 08.321.04 shackle made of?

It is made of AISI 316 stainless steel with a polished finish (mirror polishing), as indicated in the manufacturer's description.

What are the dimensions of the 4 mm variant (code 08.321.04)?

For this variant the following are reported: A 4 mm, B 8 mm, D 8 mm and L1 16 mm.

What is the workload and breaking load of this shackle?

For variant 08.321.04, a working load of 148 kg and a breaking load of 580 kg are indicated.

What is a stainless steel D-shackle used for in the nautical field?

It is commonly used to make detachable connections between hardware elements (for example ropes, chains, or accessories), useful in onboard installations and maintenance where a stainless steel component is preferred.

How do I check if this cricket is compatible with my installation?

It is advisable to check the size (A 4 mm) and the dimensions (B, D, and L1) against the components to be connected and the available space, as well as to evaluate the loads indicated for the variant.