Reduced double screw M-M 3/4"x1/2" – code: 0245E*D – Maestrini

Double reduced screw M-M Maestrini 3/4″ x 1/2″ (code 0245E*D)

The reduced double screw M-M Maestrini is a threaded fitting designed to create a connection between two components with male threading and with different sizes. In hydraulic and’onboard systems, this type of accessory is often used when it is necessary to adapt an existing line, integrate a new element, or restore a connection while maintaining circuit continuity without invasive modifications.

This version is in size 3/4" x 1/2" and is identified by the code 0245E*D by the manufacturer. It is a practical solution for installation and maintenance interventions in technical contexts, where correct spare part identification and consistency of threaded connections are central aspects in work management.

Features and construction details

Type: reduced double male screw

The component belongs to the family of double screws (or nipples) with reduction: a threaded element that features two male ends with different diameters/measurement standards. The main function is to allow the transition between two non-homogeneous fittings, maintaining a simple and direct mechanical connection.

Size 3/4″ x 1/2″

The size 3/4" x 1/2" indicates the presence of two ends with different sizes, useful when the system or components to be connected require adaptation between these two sizes. When choosing, it is important to verify the match with the threads of existing components to avoid forcing or incorrect fittings.

Material: yellow brass

The reduced double screw is made of yellow brass. This material is commonly used in fittings for hydraulic and system applications, thanks to its workability and widespread use in many connection configurations. For correct material selection, it is always advisable to consider the usage context and compatibility with components already present in the system.

Product identification and spare parts management

• Manufacturer: Maestrini
• Manufacturer code: 0245E*D
• SKU: MAES00000033

The presence of clear codes facilitates procurement and spare parts management, especially in professional contexts where it is useful to maintain traceability and consistency between installed components and replacement materials.

Typical applications in hydraulics and onboard systems

A reduced double screw M-M is used in many operational situations, particularly when working on existing lines or systems that integrate components from different sources. In nautical and technical fields, it can be used as an adaptation element between fittings, valves, accessories, or line sections with non-uniform connections.

Adapting connections with different sizes

When two components have male threads but do not share the same size, the reduced double screw allows a coherent connection with the system architecture. It is also a useful solution when replacing a component with a model that requires a different fitting than the original.

Maintenance and restoration of existing lines

During maintenance interventions, it may be necessary to restore a connection or rebuild a section of line while maintaining compatibility with what is already installed. In these cases, a reduced coupling allows managing the transition between sizes without having to redesign the entire connection.

Integration of components and accessories

In onboard systems, integrating accessories or modifying a line may require specific adjustments. The reduced double screw M-M is a simple yet functional element to connect components with different fittings, maintaining an orderly circuit layout and reducing the need for improvised solutions.

Usage and technical notes

Threading and coupling check

Before installation, verify that the threads of the components to be connected are compatible with the reduced double screw and that the required size is actually 3/4" x 1/2". A correct pairing avoids forcing and contributes to a neater assembly.

Installation in hydraulic systems

During assembly, operate carefully to avoid damaging the threads and to maintain alignment between the connected components. In the presence of specific system requirements (for example, space constraints, component orientation, or the need for future disassembly), it is advisable to plan the assembly sequence before permanently closing the connection.

Choosing the correct component

For a quick and safe selection, refer to the identifying data:

• Description: reduced double screw M-M
• Size: 3/4" x 1/2"
• Maestrini Code: 0245E*D

If working on an existing system, it may be useful to compare the component with the one installed or with the system's bill of materials, thus reducing the risk of incompatibility.

FAQ – Frequently Asked Questions

What is a reduced double-ended M-M screw for?

It is used to connect two components with male threading when the sizes do not match, allowing an orderly transition between two different dimensions.

What is the size of this Maestrini model?

This model is size 3/4″ x 1/2″.

What material is the reduced double screw made of?

It is made of yellow brass.

What is the Maestrini product code for this reduced double screw?

The manufacturer code is 0245E*D (SKU MAES00000033).

In which fields is it typically used?

It is typically used in hydraulic and onboard system installations, for installation, maintenance, and adaptation of existing lines.