Threaded Plugs
Threaded plugs, also known as plastic threaded protection plugs or hydraulic plugs, are essential components used to seal and protect threaded holes in a variety of industrial and commercial applications. These plugs are widely used by professionals in sectors such as manufacturing, automotive, hydraulics and engineering, helping prevent contamination, moisture ingress and mechanical damage during storage, transport or processing.
Our selection includes plugs suitable for BSP, UNF and Metric thread types, covering a wide range of sizes from M8 to M42, 1/8" to 3" and 5/16"-24 to 2 1/2"-12. Made from durable materials like LDPE, these threaded hole plugs are available in various colours such as red and yellow for easy identification. Customers may also be interested in related ranges including Threaded Sealing Plugs and Blanking Plugs for different sealing needs.
Key Features and Benefits:
- Reliable protection against dirt, moisture and corrosion
- Simple to fit and remove with ergonomic head designs
- Cost-effective method to safeguard threaded parts
- Available in a wide variety of thread sizes and types
- Bright colours for quick identification and sorting
Common Use Cases:
- Sealing hydraulic ports during servicing or shipping
- Protecting threaded holes on machinery in storage
- Preventing contamination in pipework during production
- Blanking unused pneumatic or hydraulic ports
- Safeguarding threads in automotive and industrial assemblies
Call Vital Parts:
For quick quotes, same-day dispatch, custom sizes or bulk discounts, call our sales line on 01233 713 581. Businesses can register for a Vital Parts Business Account for priority shipping, trade pricing, free product samples, credit accounts and dedicated account managers.
Frequently Asked Questions
Threaded Plugs are typically manufactured from durable LDPE (Low-Density Polyethylene), providing excellent impact resistance, flexibility and protection against moisture and many industrial chemicals.
Yes. Threaded Plugs are commonly used as hydraulic plugs to seal hydraulic ports and fittings during manufacture, servicing, storage and transportation, preventing contamination from entering sensitive hydraulic systems.
Yes. Threaded Plugs feature ergonomic heads that allow quick installation and removal by hand, making them suitable for fast-paced manufacturing and maintenance environments.
Yes. By sealing threaded holes against moisture, dust and contaminants, Threaded Plugs help reduce the risk of corrosion and protect precision threads from damage.
Standard Threaded Plugs are primarily designed to protect threaded holes from contamination and damage, whilst Threaded Sealing Plugs are manufactured with additional sealing features to provide a tighter seal against liquids, gases or pressure.
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In most cases we have the facilities to offer you different colours of a product, specific to your requirements. Minimum order quantities may apply depending on the manufacturing technique in question, but please get in touch with any queries you may have.
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If you're new to our website you may want to check out our frequently asked questions section for answers to common customer queries.
While browsing the website you may come across abbreviations used for material names that you are unfamiliar with. You can find an explanation for these in our material abbreviations guide.