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Screw-in plastic blanking plug / cap 1.3/16" UNF

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Manufacturer: HYDRON hydraulika siłowa (go to products)

Shipping time: 24 hours

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from €3.64 - GLS Courier (Poland)

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Threaded plastic blanking plug / cap male thread 1.3/16" UNF

The threaded plastic blanking plug male thread 1.3/16" UNF is a protective cap with an external inch thread, designed for the temporary protection of compatible hydraulic ports and connections. The product is made of plastic and helps protect hydraulic hoses, valves, cylinders, and other components from dust, dirt, shavings, and contamination during transport, storage, assembly, and repairs.

The 1 3/16" screw-in plug allows for the temporary closure of a suitably matched threaded port when an installation component remains disconnected or is being prepared for storage. It is used as a protective measure before the final hydraulic connection is established.

Important: the plastic plug male thread 1.3/16" UNF does not withstand pressure loads. It is not intended for closing hydraulic or pneumatic systems operating under pressure.

Color information: the product comes in various colors, which are packed and shipped randomly. The color of the delivered plug may differ from the one shown in the photo.

Technical parameters of the 1.3/16" UNF plastic plug

Product type: protective blanking plug, threaded plastic cap.
Connection type: male thread (GZ).
Thread size: 1 3/16".
Trade designation: 1.3/16" UNF.
Thread type: inch, unified.
Standard hydraulic thread of this size: 1 3/16"-12 UN.
Standard number of threads: 12 TPI.
Standard thread pitch: approximately 2.117 mm.
Nominal thread diameter: approximately 30.16 mm.
Material: plastic.
Purpose: temporary protection of threaded connections and ports.
Operation under pressure: unacceptable – the product does not withstand pressure loads.
Color: various colors, randomly packed.
Application: protection of hoses, valves, cylinders, and other hydraulic components.

Application of the 1 3/16" protective plug in power hydraulics

The threaded plastic plug male thread 1 3/16" is used for the temporary protection of suitably matched ports in hydraulic systems. It can be used during hose replacement, machine repairs, equipment maintenance, and the preparation of parts for transport and storage.

The plug is used in compatible ports of hydraulic valves, cylinders, and hose ends equipped with an internal thread. Its primary task is to limit the access of contaminants to the interior of the components.

Male thread 1 3/16"-12 UN – dimensions and identification

The 1 3/16" designation specifies the nominal thread diameter of approximately 30.16 mm. In standard hydraulic connections of this size, the 1 3/16"-12 UN thread is encountered, having 12 threads per inch, which is a pitch of approximately 2.117 mm.

In trade terminology, threads of this type are sometimes referred to as UNF, however, the standard hydraulic thread 1 3/16"-12 is designated as UN. Before assembly, confirm the actual pitch of the plug and its compatibility with the thread of the protected port.

To identify the thread, a caliper and an inch thread gauge can be used. Both the diameter and the number of threads per inch should be checked, as compatibility of the diameter alone does not guarantee a proper fit.

Protection of hydraulic hoses against contamination

During repairs and the disconnection of hydraulic systems, open hoses and connections are exposed to contact with dust, dirt, sand, and metal shavings. The 1.3/16" plastic plug allows for the temporary closure of a suitably matched port, helping to protect its interior from contamination.

Maintaining the cleanliness of hydraulic elements is crucial for the proper operation of the entire system. Contaminants entering the oil circuit can accelerate the wear of pumps, valves, and control units.

Plastic plug for transport and storage

The protective plug male thread 1 3/16" can be used during the transportation and storage of hydraulic parts. Temporary closure of the threaded port reduces the risk of contaminants entering the component.

The product is useful in repair workshops, spare parts warehouses, and during the shipping of hydraulic elements. Before restarting the device, remove the protective plug and establish the final connection.

Plastic – protective construction

The male thread 1.3/16" UNF plug is made of plastic. The product is intended for protecting threaded ports during transport, storage, and service work.

The plastic plug is not designed to withstand pressure loads. During installation, avoid overtightening, which could damage the thread or lead to deformation of the plug body.

Protective plug vs. hydraulic pressure plug

The 1 3/16" plastic plug is a component intended for the temporary protection of connections. It cannot replace a steel hydraulic plug, whose task is to maintain pressure during normal system operation.

If a connection is to remain closed during device operation, a suitable pressure plug with confirmed strength, correct thread, and sealing method must be selected.

How to choose a plastic plug male thread 1.3/16" UNF?

Before purchasing, check if the port to be protected has a compatible internal thread in size 1 3/16". In standard hydraulic connections of this size, the 1 3/16"-12 UN thread is common, but the actual pitch of the plug should be confirmed before installation.

It is also necessary to check the condition of the thread, the available mounting space, and the intended use of the product. The plug is suitable for the temporary protection of connections, but not for closing systems under pressure.

Assembly and disassembly of the plastic plug

Before assembly, turn off the device, safely depressurize the system, and clean the threaded port. Then check the compatibility of the plug's thread with the connection being protected.

The plug should be screwed in carefully, without excessive force. If noticeable resistance occurs, stop the assembly and recheck the thread fit. Before starting the system, the plastic plug must be removed and the correct working connection established.

Various colors – random packing

Plastic male thread 1.3/16" UNF plugs are available in various colors. Color variants are packed and shipped randomly, therefore the delivered plug may have a different color than the one shown in the photo.

Color is not a technical selection criterion for the plug. The primary importance is thread compatibility and the protective purpose of the product.

Technical specification

Parameter	Value
Product name	Threaded plastic blanking plug / cap male thread 1.3/16" UNF
Product type	Protective plug, plastic cap
Thread type	Male thread – external, inch
Nominal size	1 3/16"
Standard hydraulic thread of this size	1 3/16"-12 UN
Standard pitch	12 TPI (approx. 2.117 mm)
Nominal diameter	Approx. 30.16 mm
Material	Plastic
Pressure operation	Not intended for pressure loads
Color	Various colors, randomly packed
Application	Temporary protection of hydraulic connections against contamination

Frequently Asked Questions (FAQ)

What thread does the male thread 1.3/16" UNF plug have?

The plug has an external thread in size 1 3/16". In standard hydraulic connections of this size, the 1 3/16"-12 UN thread is used. Compatibility of the actual pitch should be confirmed before installation.

Does the 1 3/16" plastic plug withstand hydraulic pressure?

No. The product does not withstand pressure loads and cannot be used to seal an operating hydraulic system.

What is the plastic male thread 1.3/16" plug for?

It is used for the temporary protection of hoses, valves, cylinders, and other components against contamination during transport, storage, assembly, and repairs.

Can I choose the color of the plug?

The product comes in various colors, which are packed and shipped randomly. The color of the delivered plug may be different from the one in the photo.

Can a protective plug replace a pressure plug?

No. The plastic plug protects the port from contamination but is not adapted for operation under pressure. For such an application, a proper hydraulic plug must be used.