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BRENNAN BRASS PIPE BUSHING

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Description & Features

Manufactured from straight brass, this straight expander Brennan Brass Pipe Bushing transitions from a 3/8-18 Male NPTF thread to a 1/2-14 Female NPTF thread, making it suited for applications where a smaller male pipe connection must mate with a larger female port. Both threads conform to SAE J476, ensuring compatibility with standard National Pipe Taper Fuel thread fittings used in hydraulic and fluid systems.

Part of Brennan Industries' Series 5405, the fitting measures 1.680 mm in overall length and is constructed from brass, offering natural corrosion resistance in a range of fluid media. The male thread drill diameter is 0.406 mm and the female thread drill diameter is 0.531 mm. California residents should note that this product is subject to a Proposition 65 warning.

SKU: 5405-06-08-B

Supplier Part Number (MPN): 5405-06-08-B

Specifications

Brand
BRENNAN
Connection Size 1
3/8 in
Connection Size 2
1/2 in
Connection Type
FNPT, MNPT
Connection Type 1
Male SAE 30 deg NPTF
Connection Type 2
Female SAE NPTF
Cubic Inch Space L x W x H Dimensions
2.126 cu-in
Dimension Standards
SAE J476
Dimensions
1.68 in L
Fitting Type
Expander
Hex Size
1-1/8 in
Material
Brass
Material Construction
UNS C36000 Brass
Series
5405 Series
Thread 2 Drill Dimensions
0.531 in
Thread B1 Drill Dimensions
0.406 in
Thread Size
1/2-14 x 3/8-18

Product Questions & Answers (1)

Question by: Dean C on Apr 3, 2026, 7:56 AM
If I'm going from a smaller male pipe to a bigger female one, is this the right kinda fitting?
Answer by: Customer Support on Apr 4, 2026, 10:27 AM
Yes, this straight expander bushing is designed to transition from a 3/8-18 Male NPTF thread to a 1/2-14 Female NPTF thread, so it will mate a smaller male pipe connection with a larger female port.

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