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Threaded plug for Allen key UNF AGJ 7/16" JIC

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Manufacturer: HYDRON hydraulika siłowa (go to products)

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Threaded plug for Allen key UNF AGJ 7/16" JIC

Threaded plug for Allen key UNF AGJ 7/16" JIC is a steel hydraulic plug designed for closing compatible holes with an internal thread. The product has an external thread of 7/16" in the UNF/UN-2A system and a hexagonal socket allowing installation with an Allen key. It can be used for plugging appropriate ports in pumps, control valves, and other hydraulic components.

The plug is made of free-cutting steel protected by zinc plating. The design with an Allen socket facilitates the operation of the connection, even in places with limited assembly space. The product is available in the HYDRON offer as a threaded plug UNF AGJ 7/16" JIC type VSTI.

Technical parameters of the UNF AGJ 7/16" JIC plug

Product type: hydraulic plug, threaded cap.
Nominal thread size: 7/16".
Thread system: UNF/UN-2A.
Thread type: external.
JIC 7/16" thread pitch according to the thread table: 20 threads per inch (7/16"-20 UNF).
Socket type: hexagonal, for Allen key.
Material: free-cutting steel.
Surface protection: zinc-plated.
Designation appearing in the description: VSTI.
Purpose: plugging compatible holes with internal thread.
Example application areas: hydraulic pumps and control valves.

Application of the 7/16" threaded plug in power hydraulics

The Allen plug UNF AGJ 7/16" JIC is used for closing appropriately selected threaded holes in hydraulic installation components. It can be used during equipment assembly, component replacement, maintenance work, and for plugging unused ports.

Example applications include appropriately prepared holes in the bodies of hydraulic pumps and control valves. Before assembly, check thread compatibility, port design, and the required sealing method. Merely matching the diameter and thread pitch does not guarantee connection tightness.

UNF 7/16"-20 thread – identification and selection

The plug has an external thread with a nominal size of 7/16" in the UNF/UN-2A system. In the JIC thread system, the 7/16" thread occurs with a pitch of 20 threads per inch, recorded as 7/16"-20 UNF.

During thread identification, its diameter, pitch, and compatibility with the port's internal thread should be checked. Calipers and an inch thread gauge can be helpful. When plugging hydraulic ports, the geometry of the sealing surface is also important.

Allen plug – construction with hexagonal socket

The Allen socket allows tightening and loosening the plug using an appropriately selected hexagonal key. This solution facilitates servicing ports located in places where access to the external surfaces of the component is limited.

During assembly, use a tool matched to the actual dimension of the socket. An incorrectly selected key can lead to damage to the hexagonal surface and make subsequent disassembly of the plug difficult.

Free-cutting steel and zinc plating protection

The UNF AGJ 7/16" JIC plug is made of free-cutting steel. The surface of the steel element has been protected with zinc plating, which provides a protective layer reducing susceptibility to corrosion.

When choosing a product, environmental conditions and the requirements of the specific installation should be considered. Before use in a system operating under pressure, the permissible parameters of the plug and the entire connection must be confirmed.

UNF, AGJ, and JIC – what do these symbols mean?

UNF defines a unified fine-pitch inch thread. JIC is a designation for a hydraulic connection system using inch threads and a specific sealing geometry. The name of this product also contains the AGJ designation, used for hydraulic ends with an external thread.

An Allen socket plug should not be automatically equated with a JIC plug having an external conical surface. Before use, confirm the type of sealing surface of the specific element and compatibility with the port being plugged.

How to select the UNF AGJ 7/16" plug for a port?

The first step is identifying the internal thread to be closed. Its size, pitch, and compatibility with the 7/16" UNF external thread must be checked. It is also important to confirm the seal design and operating parameters.

When replacing a previously used cap, it is worth comparing the new plug with the original element in terms of thread, assembly method, and mating surfaces. Full interchangeability should not be assumed solely on the basis of the common 7/16" JIC designation.

Assembly and connection inspection

Before starting assembly, turn off the device and safely depressurize the hydraulic system. Then clean the hole thread, check the condition of the plug, and inspect the mating surfaces.

The plug should be installed with an appropriately selected Allen key in accordance with the technical requirements of the given port. After completing the assembly, check for proper mounting. If the element is to remain in a system under pressure, it is necessary to confirm its permissible parameters and the correct sealing method.

Technical specification

Parameter	Value
Product name	Threaded plug for Allen key UNF AGJ 7/16" JIC
Product type	Hydraulic plug / cap
Thread	External 7/16" UNF/UN-2A
Standard JIC 7/16" thread pitch	20 threads per inch
Socket	Hexagonal for Allen key
Material	Free-cutting steel
Coating	Zinc-plated
Designation in description	VSTI
Application	Plugging compatible threaded holes

Frequently Asked Questions (FAQ)

What thread does the AGJ 7/16" Allen plug have?

The plug has an external 7/16" thread in the UNF/UN-2A system. The standard JIC thread notation in this size is 7/16"-20 UNF.

What is the UNF 7/16" threaded plug used for?

The product is used for plugging compatible holes with an internal thread, for example, in appropriately adapted bodies of hydraulic pumps and control valves.

What key is used to install the plug?

The plug is equipped with a hexagonal socket intended for installation with an Allen key. The key size should be matched to the socket dimension.

What material is the plug made of?

The product is made of zinc-plated free-cutting steel.

Does an Allen socket plug replace every JIC 7/16" plug?

No. Before replacement, check the design of the sealing surfaces, the thread size and pitch, and the permissible operating parameters of both elements.