3/8 x 1/4 BRASS BUSHING

Description & Features

Machined from brass, this hex bushing adapts a 3/8 inch female NPT port to accept a 1/4 inch male NPT fitting. The reduction bushing configuration allows direct port-to-fitting connections without additional adapters, making it a practical solution for thread size transitions in hydraulic and fluid system assemblies.

The 3/8 x 1/4 Brass Bushing is suited for use with oil, water, and air lines where brass construction provides reliable corrosion resistance and adequate mechanical strength for moderate-pressure service conditions.

SKU: 5406-06-04-B

Supplier Part Number (MPN): 5406-06-04-B

Alternate Part Numbers: 3220-06-04

Specifications

Brand
BRENNAN
Connection Size 1
3/8 in
Connection Size 2
1/4 in
Connection Type
FNPT, MNPT
Connection Type 1
Male SAE NPTF
Connection Type 2
Female SAE NPTF
Dimension Standards
SAE J476, SAE J514
Dimensions
0.85 in L
Fitting Type
Bushing
Hex Size
3/4 in
Material
Brass
Material Construction
UNS C36000 Brass
Series
5406 Series
Thread Size
3/8-18 x 1/4-18

Product Questions & Answers (1)

Question by: Freddie D on Mar 14, 2026, 4:10 PM
Is this bushing okay for hooking up an air line?
Answer by: Customer Support on Mar 16, 2026, 6:46 AM
This bushing is indeed suited for use with air lines, as well as oil and water lines.

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