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MJ BLKHD W/NUT

Description & Features

The MJ BLKHD W/NUT is a straight steel adapter from Brennan Industries Inc. With an overall length of 2.070 mm it is designed for industrial applications requiring reliable connections.

This adapter features male JIC SAE 37-degree flare threads on both ends specifically 7/16-20 size meeting the SAE J514 specification. It includes a lock nut for secure fittings aligning with the 0306-04 locknut specification.

The product from the 2700-LN series also has a C hex dimension of 0.687 mm ensuring compatibility with various hydraulic systems.

Supplier Part Number: 2700-LN-04-04

Meta Title: MJ BLKHD W/NUT 2700-LN-04-04

Specifications

Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 2700-LN-04-04	Product Weight 0.10 lbs

Product Questions & Answers (2)

Question by: Carl S on Oct 9, 2025, 3:33 PM

both ends on this fitting are male JIC, so how's it supposed to mount through a panel, does the nut hold it in place from one side?

Answer by: Customer Support on Oct 11, 2025, 11:54 AM

That's exactly how it works. One male end passes through the panel opening, and the included 0306-04 lock nut threads onto that end from the back side, clamping the fitting securely against the panel. The other male JIC end sticks out on the opposite face to accept your hose or tube connection. Both threads are 7/16-20 and conform to SAE J514, so as long as your mating fittings match that spec, you'll get a solid, leak-resistant connection at the bulkhead.

Question by: Glen W on Apr 18, 2025, 7:11 AM

i’ve got a bulkhead spot to go through a panel, is this the straight one with the jam nut?

Answer by: Customer Support on Apr 19, 2025, 8:53 AM

For a panel or bracket pass-through, this is the straight bulkhead-style adapter that comes with a lock nut. It uses male JIC SAE 37 degree flare threads on both ends, and the locknut spec is listed as 0306-04.