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05MORB HOLLOW HEX PLUG

Description & Features

The 05MORB Hollow Hex Plug from Brennan Industries Inc is designed for industrial applications requiring durable and reliable sealing solutions.

Manufactured from straight steel its robust build ensures longevity. The plug features a 1/2-20 male SAE O-ring boss thread specification according to SAE J514 standards providing compatibility with a variety of systems and ensuring a tight secure fit.

Its external hex head allows for easy installation and removal while the NBR O-ring/seal material guarantees optimal sealing performance. This product measures 0.470 mm in overall length with a thread B1 drill diameter of 0.234 mm.

The product is part of series 6408-H-O.

Supplier Part Number: 6408-H05-O

California Residents: PROP-65 WARNING

Specifications

Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 6408-H05-O

Product Questions & Answers (2)

Question by: Brenda R on May 20, 2025, 5:41 PM

What kind of thread does this plug run, and is it gonna seal up proper without a bunch of extra tape or compound?

Answer by: Customer Support on May 22, 2025, 6:01 AM

It runs a 1/2-20 male SAE O-ring boss thread built to SAE J514 spec. The sealing is handled by the NBR O-ring that comes with it, so you don't need thread tape or sealant compound on top of it. O-ring boss fittings seal on the O-ring itself, not the threads, which is what makes them reliable in hydraulic applications where you need a clean, predictable seal every time.

Question by: Kirk C on Jan 11, 2026, 1:12 PM

got a port that takes a 1/2-20 SAE O-ring boss, is this plug the right match?

Answer by: Customer Support on Jan 13, 2026, 7:50 AM

For a 1/2-20 male SAE O-ring boss connection built to SAE J514, this plug matches that thread type and spec, and it seals with an NBR O-ring.