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04 EXTERNAL HEX PIPE PLUG

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Description & Features

The 04 External Hex Pipe Plug from Brennan Industries Inc is designed for high-performance applications where reliable sealing is required. Manufactured from straight steel this plug ensures durability and long-lasting usage.

With a 0.750 mm overall length and a 0.170 mm overall length L2 it features a solid construction that meets SAE J476 thread specifications. The male NPTF thread type ensures a secure fit in various industrial settings.

Specifically engineered with a hex head for easy installation and removal the 04 NPTF Hex Head Pipe Plug is suitable for diverse technical environments.

Supplier Part Number: 5406-P-04

California Residents: PROP-65 WARNING

Specifications

Brand
BRENNAN
Connection Size 1
1/4 in
Connection Type
MNPT
Connection Type 1
Male NPTF
Dimension Standards
SAE J476
Dimensions
3/4 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Plug
Hex Size
0.563 in
l2 Dimensions
0.17 in
Material
Steel
Material Construction
AISI 12L14/1045 Steel
Maximum Operating Pressure
6000 psi
Series
5406-P Series
Thread B1 Drill Dimensions
0.281 in
Thread Size
1/4-18

Product Questions & Answers (3)

Question by: Janice C on Mar 6, 2026, 7:52 PM
What size wrench do I need for these plugs?
Answer by: Customer Support on Mar 8, 2026, 6:49 AM
These pipe plugs have a hex head designed for easy installation and removal using standard tools. The exact wrench size will depend on the specific tool you're using, but the hex head should provide a good fit.
Question by: Denise T on Aug 27, 2025, 6:48 AM
got a 1/4-18 NPTF port i need to plug off, is this the right thread?
Answer by: Customer Support on Aug 28, 2025, 2:14 PM
For a 1/4-18 male NPTF plug, this matches. It is a male NPTF thread with a 1/4-18 size and it follows SAE J476 thread specification.
Question by: Norm B on Aug 22, 2025, 6:21 PM
what thread size is on this plug and does it follow any kind of standard spec?
Answer by: Customer Support on Aug 24, 2025, 9:08 AM
1/4-18 NPTF male thread, built to SAE J476. That spec covers dry-seal pipe threads, so you get a pressure-tight connection without relying solely on tape or sealant to do the work.

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