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Plastic blanking plug / screw-in cap 11/16" UNF male thread

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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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Plastic blanking plug / threaded cap 11/16" UNF male thread

The 11/16" UNF plastic threaded blanking plug is a protective cap designed for temporary sealing of holes and hydraulic ports equipped with a compatible internal thread. The product is made of plastic and features an external inch thread with a nominal size of 11/16". It is used to protect hydraulic hoses, manifolds, cylinders, and other components from dust, dirt, metal shavings, and other contaminants.

The 11/16" UNF plastic male thread plug is used during machine repairs, hose replacement, parts transport, and storage of hydraulic elements. It allows for temporary protection of an open port until the final connection is made, helping to maintain the cleanliness of the component's interior.

Important: the 11/16" UNF plastic blanking plug does not handle pressure loads. It must not be used for sealing hydraulic or pneumatic systems operating under pressure.

Color information: blanking plugs are available in various colors, which are packed and shipped randomly. The color of the received product may differ from the one shown in the photo.

Technical parameters of the 11/16" UNF plastic blanking plug

Product type: protective blanking plug, threaded plastic cap.
Connection type: Male – external thread.
Nominal thread size: 11/16".
Commercial thread designation: UNF.
Thread system: inch, unified.
Nominal thread diameter: approximately 17.46 mm.
Thread pitch: requires confirmation for a specific design.
Material: plastic.
Intended use: temporary protection of ports and threaded holes.
Operation under pressure: inadmissible – the product does not handle pressure loads.
Color: various colors, randomly packed.
Application: protection of hoses, manifolds, cylinders, and other hydraulic components.

Application of the 11/16" protective plug in power hydraulics

The 11/16" UNF plastic male threaded plug is designed for temporary protection of open connections during service work, machine maintenance, and replacement of hydraulic hoses. It can be used in compatible ports of manifolds, cylinders, valves, and other hydraulic power components.

The blanking plug helps to limit the access of contaminants to the interior of the system in situations where components remain disconnected from hoses or are being prepared for reassembly. It is a protective element, not a part intended for operation in a pressurized system.

11/16" UNF male thread – dimensions and identification

The 11/16" designation corresponds to a nominal thread diameter of 17.4625 mm, or approximately 17.46 mm. The product name uses the UNF designation, referring to the system of unified fine-pitch inch threads with a 60° profile angle.

When identifying the thread, both the diameter and the number of threads per inch (TPI) should be checked. The designation 11/16" UNF alone, without specifying the number of threads, does not allow for an unambiguous determination of the full parameters of a specific plug.

A caliper and an inch thread gauge can be used for measurement. Before screwing in the blanking plug, ensure that its thread is compatible with the internal thread of the port being protected.

Protection of hydraulic hoses against contamination

During repairs and disconnection of hydraulic systems, open hoses and ports are exposed to contact with dust, sand, grime, and metal shavings. The 11/16" UNF plastic male thread blanking plug allows for temporary closure of a properly matched hole, limiting the possibility of contaminants entering its interior.

Maintaining the cleanliness of components is significant for the proper operation of power hydraulics. Solid particles in the oil circulation can accelerate the wear of hydraulic pumps, valves, manifolds, and sealing elements.

11/16" male thread blanking plug for transport and storage

The 11/16" UNF plastic plug is useful during the transportation and storage of hydraulic parts. Temporary closure of a threaded hole helps protect the interior of the component from contaminants present in the warehouse, workshop, and during transport.

The product can be used when preparing spare parts for shipment, repair, or assembly. Before restarting the system, the protective blanking plug must be removed and the proper hydraulic connection must be made.

Plastic – construction of the protective blanking plug

The 11/16" UNF male thread blanking plug is made of plastic. Its primary function is to protect threaded holes from contamination during transport, storage, and service activities.

The plastic body is not intended to handle pressure loads. During assembly, avoid excessive tightening, which could cause damage to the thread or deformation of the blanking plug.

Protective blanking plug vs. hydraulic pressure plug

The 11/16" UNF plastic male thread blanking plug is used for temporary closing of ports for their protection against contamination. It is not designed to maintain working pressure and cannot replace a properly selected hydraulic pressure plug.

If a port is to remain closed during the operation of the device, a component with confirmed working parameters, proper thread, and an appropriate sealing method must be used. Mere compatibility of the thread diameter does not mean that protective and pressure solutions are interchangeable.

How to choose an 11/16" UNF plastic male thread blanking plug?

Before purchasing, ensure that the port to be protected has a compatible internal thread with a nominal size of 11/16". The diameter, number of threads per inch, and the condition of the threaded surface should be verified.

It is also important to correctly define the purpose of the plug. The blanking plug is suitable for temporary protection of ports during repairs, storage, and transport, but it cannot be used to close a system operating under pressure.

Assembly and disassembly of the 11/16" plastic plug

Before assembly, turn off the device, safely depressurize the system, and clean the threaded hole. Then, the compatibility of the blanking plug's thread with the port being protected must be checked.

The plug should be screwed in carefully, without excessive force. If significant resistance appears during assembly, stop screwing and recheck the compatibility of the threads. Before starting the system, the plastic blanking plug must be removed.

Various colors – random packing

11/16" UNF plastic male thread blanking plugs are available in various colors. Color variants are packed and shipped randomly, so the color of the delivered product may differ from the one shown in the photo.

Color is not a primary technical parameter of the blanking plug. The most important factors are the thread compatibility and the protective purpose of the product.

Technical Specification

Parameter	Value
Product name	Plastic blanking plug / threaded cap 11/16" UNF male thread
Product type	Protective blanking plug, plastic cap
Connection type	Male – external thread
Nominal size	11/16"
Thread designation	UNF
Nominal thread diameter	Approximately 17.46 mm
Thread pitch	To be confirmed for a specific design
Material	Plastic
Operation under pressure	Inadmissible
Color	Various colors, randomly packed
Application	Temporary protection of hydraulic connections against contamination

Frequently Asked Questions (FAQ)

What thread does the 11/16" UNF plastic male thread blanking plug have?

The blanking plug has an external inch thread with a nominal size of 11/16", commercially designated as UNF. Before assembly, its pitch and compatibility with the port to be protected should be confirmed.

Does the 11/16" UNF plastic plug withstand hydraulic pressure?

No. The product does not handle pressure loads and cannot be used to close a hydraulic system during operation.

What is the 11/16" UNF plastic male thread blanking plug used for?

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

Can I choose the color of the blanking plug?

The blanking plugs are available in various colors, packed and shipped randomly. The color of the received product may differ from the one shown in the photo.