1/4" square head M plug in brass – code: 0290A – Maestrini

1/4″ square head M plug in brass Maestrini (code 0290A)

The male plug (M) with 1/4″ square head in brass Maestrini is a component designed for closing threaded ends in systems and connection lines where it is necessary to interrupt or protect a branch. The square head offers a practical grip point for assembly and disassembly operations, making it suitable for maintenance and installation contexts in technical fields.

Offered with code 0290A, this plug is suitable for applications requiring a closing element in brass, a material commonly used in fittings for its versatility of use. It is an essential and neat solution to complete a system, perform temporary closures, or prepare lines for future expansions.

Features and construction details

Type and function

• Type: cap male (M) for closing a compatible female threaded seat.
• Function: closing an unused connection point, protecting a branch, or terminating a line.

Shape and grip

• Square head: allows a direct grip with suitable tools, useful in installation and maintenance.
• Contained bulk: a practical solution when a simple and easily inspectable closure is desired.

Material

• Brass: material widespread in components for systems and fittings, often chosen for general technical applications.

Product size and identification

• Size: 1/4″.
• Product code: 0290A (Maestrini).
• SKU: MAES000000229.

Typical applications

This male plug with a square head is suitable for many situations where a 1/4″ female thread needs to be closed.

Usage contexts

• Onboard systems: closing unused provisions or branches on technical lines.
• Maintenance: temporary closures during replacement or component inspection operations.
• Setups and retrofit: termination of connection points awaiting future connections.
• Systems and fittings in technical fields: use as an end-of-line plug or operational safety during work.

Operational advantages

A plug is a simple component, but often crucial for order, operational safety, and system management. The brass square head version offers a combination of practicality and immediacy of use, particularly useful when working in technical spaces or in conditions of limited access.

Why choose the square head

• Clear grip: the square head facilitates operation with suitable tools, reducing the risk of slipping compared to solutions with less defined grip.
• Simplified maintenance: useful when the cap needs to be removed and reinstalled during inspections or system modifications.

Why choose brass

• Common material in fittings: typical choice for threaded components and closure accessories in technical systems.
• Consistent solution with many fittings: brass is often used in combination with components of the same material family, for uniformity of installation and spare parts management.

Usage and installation notes

To achieve a proper seal, it is important to check thread compatibility and properly prepare the seat. In the absence of specific indications on the type of seal, it is good practice to adopt assembly procedures consistent with your system and workshop standards.

General indications

• Size check: check that the female seat is 1/4″ and that the thread is compatible with the cap.
• Seat check: clean the thread and remove any residues that could compromise screwing.
• Screwing: insert the cap aligned and tighten with a suitable tool on the square head, avoiding forcing.
• Sealing: choose the sealing method best suited to your application (based on the type of thread and system practices), without over-tightening.
• Inspection: after installation, check for leaks according to the operating conditions of the system.

Notes for purchase and identification

To facilitate spare parts management and correct component selection, refer to code 0290A and the SKU MAES000000229. The product is associated with the brand Maestrini and falls under the category Hydraulics and fittings.

Summary

• Product: Square head M cap
• Size: 1/4″
• Material: brass
• Code: 0290A
• Brand: Maestrini

FAQ – Frequently Asked Questions

What is the 1/4″ square head M plug used for?

It is used to close a compatible 1/4″ female threaded seat, for example to terminate a line, close an unused branch, or protect a connection point during maintenance.

What material is used for this Maestrini cap?

The cap is made of brass, a material commonly used in fittings and components for technical systems.

What is the advantage of the square head?

The square head provides a practical grip point for operation with suitable tools, facilitating mounting and dismounting operations in installation and maintenance.

How do I correctly identify the product for reordering?

You can refer to the Maestrini code 0290A and the SKU MAES000000229 listed on the product sheet.

Is it suitable for onboard systems?

It is a closing component usable in technical contexts, including onboard systems, when it is necessary to close a compatible 1/4″ female thread.