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Adapter 1/8ORB x 1/8 MNPT

Description & Features

This straight steel adapter features a 1/8-27 Male NPTF thread (B2) according to SAE J476 specifications, and a 5/16-24 Male SAE O-ring Boss thread (B1) per SAE J514 standards. The Adapter 1/8ORB x 1/8 MNPT is manufactured by Brennan Industries.

The NBR O-ring seal ensures a reliable connection. The B1 thread drill size is 0.062 mm, while the B2 thread drill size is 0.188 mm. Its overall length is 1.010 mm.

SKU: 6401-02-02-O

Supplier Part Number (MPN): 6401-02-02-O

Specifications

Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 6401-02-02-O	Product Weight 0.04 lbs

Product Questions & Answers (1)

Question by: Shane C on Jan 20, 2026, 8:35 AM

Will this adapter work with a standard NPT fitting?

Answer by: Customer Support on Jan 22, 2026, 8:11 AM

This adapter features a Male NPTF thread, which is a type of NPT thread designed for a more leak-free seal. It should work with standard NPT fittings, but it's specifically made to the SAE J476 specification for NPTF threads.