Phone: (0086) 185-8864-8174 | Email: hello@delphi-fittings.com Request a Quote
NPTF Pipe Square Head Plug - Part 5406-HP

Part Number: 5406-HP

NPTF Pipe Square Head Plug

Product Overview

The Delphi Fittings Part 5406-HP is an NPTF Pipe Square Head Plug, designed to reliably seal female NPTF (Dryseal) threaded ports. Its defining characteristic is an external square head, which allows for robust engagement with square drive tools or specific types of wrenches, facilitating high torque application for secure installation and removal. Constructed from durable carbon steel and featuring NPTF Dryseal threads, this plug ensures a tight, leak-proof seal in various hydraulic, pneumatic, and industrial applications where a square head drive is preferred or required.

Key Features & Specifications

Material High-Grade Carbon Steel
Thread Type Male NPTF (Dryseal) (ANSI B1.20.3, SAE J476)
Drive Style External Square Head
Sealing Mechanism NPTF Dryseal threads create a metal-to-metal seal, intended for effectiveness without additional sealant.
Corrosion Protection Standard Zinc Plating for enhanced durability and resistance to corrosion.
Primary Function To securely seal unused female NPTF threaded ports.
Special Feature Features an external square head for specific tool engagement.
Working Pressure Suitable for a variety of hydraulic and pneumatic system pressures; specific ratings depend on size and application.
Temperature Range Designed for standard operating temperatures in typical fluid power systems.

Commonly Available Sizes (Part #5406-HP - Square Head Type)

Delphi Fittings provides the NPTF Pipe Square Head Plug in a range of standard NPTF sizes. Common sizes include (Male NPTF):

  • 5406-HP-02SQ: 1/8" NPTF Male (Note: Suffix 'SQ' added for clarity, actual part number remains 5406-HP per source)
  • 5406-HP-04SQ: 1/4" NPTF Male
  • 5406-HP-06SQ: 3/8" NPTF Male
  • 5406-HP-08SQ: 1/2" NPTF Male
  • 5406-HP-12SQ: 3/4" NPTF Male
  • 5406-HP-16SQ: 1" NPTF Male

Note: This list indicates common plug sizes. While the base part number is 5406-HP as per source data, specific ordering codes for the square head variant might differ or require specification. For confirmation on sizing and ordering, please contact our sales team.

Applications

The Part 5406-HP NPTF Pipe Square Head Plug is suitable for applications where:

  • A secure seal of NPTF ports is required.
  • High torque may be needed for installation or removal, facilitated by the square head.
  • Specific tooling for square heads is standard or preferred.
  • Use in industrial machinery, agricultural equipment, and heavy-duty vehicle fluid systems.
  • Plumbing and piping systems in various manufacturing and processing environments.
  • Temporary or permanent closure of ports in hydraulic or pneumatic circuits.

Installation & Usage Guidelines

  • Ensure the female NPTF port and the male threads of the square head plug are clean, dry, and undamaged.
  • Hand-thread the plug into the port to ensure proper alignment and prevent cross-threading.
  • Use a correctly sized square drive tool or wrench that fits the external square head to tighten the plug to the recommended torque.
  • NPTF Dryseal threads are designed to seal without thread sealant. However, for exceptionally high pressures or if mating with standard NPT female threads, a compatible thread sealant or lubricant can be applied to the male threads.
  • Tighten securely to create a leak-proof seal, but avoid over-tightening, which could damage the plug or the port.

Why Choose Delphi Fittings Part 5406-HP (Square Head Type)?

  • Robust Tool Engagement: The external square head allows for strong engagement with appropriate tools, ideal for high-torque applications.
  • Reliable Sealing Performance: NPTF Dryseal threads ensure a tight metal-to-metal seal, minimizing potential leaks.
  • Durable Construction: Manufactured from high-quality carbon steel for long-lasting service and resistance to wear.
  • Versatile Use: Suitable for a wide range of industrial, hydraulic, and pneumatic port sealing applications.
  • Standardized Threads: Meets industry specifications for NPTF thread dimensions.
  • Quality Assurance: Produced under Delphi Fittings' ISO 9001:2015 certified quality management system.

Get a Quote for Part 5406-HP - NPTF Pipe Square Head Plug

For applications requiring an NPTF plug with an external square head, specify the Part 5406-HP Square Head variant. Contact Delphi Fittings for wholesale pricing, bulk order details, and assistance with your fitting needs.

Request a Quote Back to NPT Fittings