3/4" Brass Square Head Male Cap – code: 0290E – Maestrini

Square head M plug 3/4" in Maestrini brass (code 0290E)

The male (M) square head cap Maestrini, in brass and with male-female connection 3/4″, is a practical component for the closure or protection of threaded ends in hydraulic and plant engineering fields. The presence of the square head facilitates grip during assembly and disassembly operations, making it suitable for maintenance interventions and installations where a simple and tidy solution is desired.

This version is identified by the supplier product code 0290E and is offered with supply Maestrini, a brand used in many technical applications, including those related to onboard plant engineering and components for operational environments.

Features and construction details

The cap is designed to perform the function of closing on a compatible threaded seat, with geometry designed for easy tightening.

Main product data

• Type: cap M (male) with square head
• Size: 3/4″
• Material: brass
• Supplier code: 0290E
• Brand / supplier: Maestrini

Square head: practicality in installation

The square head is a common solution in technical caps because it offers a stable grip with suitable tools, useful when working in technical spaces or in the presence of closely spaced components. This design detail helps to manage screwing and unscrewing operations more controlled, especially during routine maintenance.

Brass: a common choice for fittings and caps

The’brass is a material frequently used in fittings and hydraulic small parts for its workability and use in technical contexts. The Maestrini brass cap falls into this category of components, designed to complete or close lines and plant predispositions.

Typical applications

A male square head cap is normally used to close a connection point not in use, to temporarily seal a branch during work or to protect a thread when a line is awaiting completion. In nautical and plant engineering fields, it can be useful in various operational situations, always verifying compatibility with the thread and the specific application.

Examples of use (generic)

• Closure of threaded ends on hydraulic lines or plant predispositions.
• Maintenance interventions: isolation of a section or closure of a point pending restoration.
• Setups and retrofit: closure of doors or branches not used in a specific configuration.
• Protection of a threaded connection when it is not connected to another component.

Operational advantages

Although it is a simple component, a properly selected plug helps maintain order and functionality in the system. The combination of square head and brass makes this item a practical choice for those looking for a replacement or a complementary component consistent with traditional fittings.

Why choose this Maestrini plug

• Clear identification: code 0290E useful for reorders and spare parts management.
• Common technical format: measurement 3/4″ for compatible applications.
• Square head: easy grip for mounting/dismounting operations.
• Brass material: typical for fittings and closure components.

Usage and important notes

For correct installation, it is essential to check the thread compatibility and the suitability of the plug for the system on which it will be mounted. In the absence of specific indications on threading standards, sealing, or operating conditions, it is advisable to follow the mounting practices provided for your application and use sealing materials/accessories suitable for the type of connection.

Practical indications (generic)

• Check that the size 3/4″ matches the seat where the plug is intended to be installed.
• Check the condition of the threading (cleanliness, absence of damage) before mounting.
• Tighten appropriately, avoiding unnecessary force.
• In case of replacement, identify the component by code 0290E to maintain consistency with the supply.

FAQ – Frequently Asked Questions

What does “M cap” mean in this product sheet?

“M cap” indicates a male cap, designed to screw onto a compatible female threaded seat, thus closing or protecting a connection.

What is the purpose of the square head of the cap?

The square head is a shape that facilitates grip with suitable tools during assembly and disassembly operations, especially useful in maintenance.

What material is the Maestrini 0290E cap made of?

The cap is made of brass, as indicated in the product description.

What is the size of this cap?

The size indicated for this model is 3/4". It is important to verify that it matches the connection on which it must be installed.

How can I correctly identify the product for a reorder?

You can refer to the Maestrini supplier product code “0290E” and, if useful, to the store SKU MAES000000231.