04MJ-06MJ BULKHEAD STRAIGHT

Description & Features

A reduced-port bulkhead fitting designed to transition between two different JIC thread sizes within a panel or bulkhead wall, the 04MJ-06MJ Bulkhead Straight from Brennan Industries connects a 7/16-20 Male JIC SAE 37° Flare on one end to a 9/16-18 Male JIC SAE 37° Flare on the other. Both thread ends conform to SAE J514, making this fitting suitable for hydraulic line assemblies where a size reduction is required at a bulkhead pass-through point.

Constructed from straight steel, this fitting has an overall length of 2.170 inches. The dual male JIC configuration with SAE 37° flare geometry provides a reliable metal-to-metal seal on both sides of the bulkhead. It is well suited for mobile hydraulic equipment, industrial machinery, and other hydraulic circuit applications requiring a secure, compact bulkhead connection.

SKU: 2700-04-06

Supplier Part Number (MPN): 2700-04-06

Specifications

Brand
BRENNAN
Connection Size 1
1/4 in
Connection Size 2
3/8 in
Connection Type
Male JIC
Connection Type 1
Male SAE 37 deg JIC Flare
Connection Type 2
Male SAE 37 deg JIC Flare
Dimension Standards
MS 51520, SAE J514
Dimensions
2.17 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
0.81 in
Material
Steel
Material Construction
AISI 12L14/1045 Steel
Maximum Operating Pressure
6000 psi
Series
2700 Series
Thread 2 Drill Dimensions
0.297 in
Thread B1 Drill Dimensions
0.172 in
Thread Size
9/16-18, 7/16-20

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Product Questions & Answers (1)

Question by: Hubert W on Dec 8, 2025, 6:54 AM
Will this here fitting work to join up different size lines going through a panel?
Answer by: Customer Support on Dec 10, 2025, 6:26 AM
Precisely. This bulkhead fitting is designed to connect a 7/16-20 male JIC to a 9/16-18 male JIC through a panel or wall.

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