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06 HOLLOW HEX PIPE PLUG BRASS

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Description & Features

Designed for sealing threaded ports in hydraulic and industrial fluid systems, the 06 Hollow Hex Pipe Plug Brass accepts a 3/8-18 Male NPTF thread conforming to SAE J476. The hollow hex drive allows installation with a hex key rather than a wrench, making it well suited for confined or recessed port locations where clearance is limited.

Machined from straight brass, this fitting offers reliable corrosion resistance in a range of fluid media. With an overall length of 0.460 inches and a drill size of 0.406 inches, it is compact and consistent with standard port plug dimensions. Manufactured by Brennan Industries under the 5406-HP series, it carries a California Prop 65 warning as noted for applicable buyers.

SKU: 5406-HP-06-B

Supplier Part Number (MPN): 5406-HP-06-B

Specifications

Brand
BRENNAN
Connection Size 1
3/8 in
Connection Type
MNPT
Connection Type 1
Male NPTF
Dimension Standards
SAE J476
Dimensions
0.46 in L
Finish
Natural
Fitting Type
Plug
Material
Brass
Material Construction
Brass
Series
5406-HP Series
Thread B1 Drill Dimensions
0.406 in
Thread Size
3/8-18

Product Questions & Answers (1)

Question by: Stan C on Jan 5, 2026, 6:25 AM
What size hex key do I need for these plugs?
Answer by: Customer Support on Jan 6, 2026, 6:54 PM
You'll need a hex key that fits a 3/8-18 NPTF thread. These plugs are designed to be installed using a hex key instead of a wrench, which is handy in tight spots.

Tell us what you need and we'll get back to you.

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