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#6 MP X #12 FP

Description & Features

This straight steel expander features a #6 MP x #12 FP connection. The #6 MP X #12 FP adapter has a male NPTF 3/8-18 thread and a female NPTF 3/4-14 thread, both manufactured to SAE J476 specifications.

This Brennan Industries fitting has a maximum dynamic pressure of 4,000 PSI.

SKU: 5405-06-12

Supplier Part Number (MPN): 5405-06-12

Alternate Part Numbers: A2040-6-12S

Specifications

Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 5405-06-12	Product Weight 0.34 lbs

Product Questions & Answers (1)

Question by: Phil A on Jan 3, 2026, 10:39 AM

What size are each of the threaded ends on this fitting? I wanna make sure it's the right one before I order it.

Answer by: Customer Support on Jan 5, 2026, 6:33 AM

This straight expander has a male NPTF 3/8-18 thread on one end and a female NPTF 3/4-14 thread on the other. Both threads are manufactured to SAE J476 specifications.