Collection: Round Head Plugs

Round head plugs are components designed to securely and reliably seal holes and openings in various industrial systems. Their rounded shape ensures easy installation and a perfect seal, making them ideal for applications requiring strength, durability, and precision. 

In this section, you will find our complete range of round head plug options, available in different materials, sizes, and finishes suiting every need. For a complete overview on our Plugs, visit the related category.

Download the catalogue with all products for a complete overview.

Available sizes

To make it easier to select the most suitable product, here is a quick reference table with the main dimensions of our round head plugs:

• 3/4” – Standard: ASME B16.11 / DIN/ISO – Thread: NPT/PE
• 1/4” – Standard: ASME B16.11 – Thread: NPT
• 3/8” – Standard: ASME B16.11 – Thread: NPT
• 1/2” – Standard: ASME B16.11 / DIN/ISO – Thread: NPT/PE
• 1’’ – Standard: ASME B16.11 / DIN/ISO – Thread: NPT/PE
• 2’’ – Standard: ASME B16.11 / DIN/ISO – Thread: NPT/PE
• 3’’ – Standard: ASME B16.11 – Thread: NPT
• 4’’ – Standard: ASME B16.11 – Thread: NPT

(Note: this table is indicative – please refer to the PDF for full details.)

Round head plugs applications

Our round head plugs are used across several industries, including:

• Hydraulic and pneumatic systems
• Automotive and mechanical engineering
• Industrial and agricultural machinery
• High-pressure piping and fittings

Available materials

Round head plugs are available in the following steels:

• A/SA105N
• A/SA105N HDG
• A/SA182 F11 CL2
• A/SA182 F22 CL3
• A/SA182 F304/L
• A/SA182 F304H
• A/SA182 F316/L
• A/SA182 F316H
• A/SA182 F317/L
• A/SA182 F321

Finishes of our round head plugs

The range includes round head plugs with the following finishes:

• NPT (National Pipe Thread): American tapered standard, ideal for high-pressure use
• PE = PLAIN

Purchase online your round head plugs forniture

The round head plugs available in our ecommerce are designed to guarantee maximum reliability in every context. Each product comes with technical datasheets, high-resolution images, and optimized descriptions to help you quickly select the most suitable solution.

Our plus:

• Wide stock availability
• Fast and simple ecommerce purchasing
• Quick and secure delivery across Europe
• Dedicated customer support for technical and order enquiries

FAQ – Round Head Plugs

1. What are round head plugs?

They are threaded plugs with a rounded head, used to seal holes and ensure tightness in systems and machinery.

2. What is the difference between NPT and PE?

NPT threads are tapered and follow American standards, while PE (PLAIN).

3. Where are they used?

In hydraulic and pneumatic systems, automotive, industrial plants, and agricultural machinery.

5. Can I buy them online?

Yes, all products are available directly from the Mega Spa ecommerce, with fast and secure delivery.