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05 BULKHEAD LOCK NUT

Description & Features

This straight steel 05 BULKHEAD LOCK NUT, part of the 0306 series from Brennan Industries, features a 1/2-20 Thread B1 Drill and a Thread B1 Size of Tube OD 5/16.

Designed to meet SAE J514 standards, the male JIC SAE 37 Degree Flare ensures a secure connection.

SKU: 0306-05

Supplier Part Number (MPN): 0306-05

Alternate Part Numbers: A210212-5S

Specifications

Connection Size 1 5/16 in	Connection Type JIC	Connection Type 1 SAE 37 deg JIC	Dimension Standards SAE J514	Dimensions 0.28 in W	Finish Trivalent Zinc-Plated	Fitting Type Locknut	Hex Size 3/4 in	Material Steel	Material Construction 12L14/C1045 Steel	Series 0306 Series	Thread Size 1/2-20	Tube Outside Diameter 0.31 in

Product Questions & Answers (2)

Question by: Hank H on Aug 6, 2025, 12:33 PM

Reckon this'll fit a standard bulkhead? Just need to make sure 'fore I order a bunch.

Answer by: Customer Support on Aug 8, 2025, 8:35 AM

This bulkhead lock nut is made to meet SAE J514 standards, so as long as your bulkhead fitting also meets those standards, it should fit just fine.

Question by: Howard B on Sep 5, 2025, 9:55 PM

got a bulkhead fitting with a 1/2-20 male JIC, is this the right lock nut for it?

Answer by: Customer Support on Sep 7, 2025, 6:23 AM

For a bulkhead setup that uses a 1/2-20 thread and a male JIC SAE 37 degree flare connection, this lock nut matches that thread callout and is built to the SAE J514 spec.

05 BULKHEAD LOCK NUT

Description & Features

Specifications

Related Documents

Product Questions & Answers (2)