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12MP-04MP HEX NIPPLE

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Description & Features

Designed for reducing connections between different pipe thread sizes, the 12MP-04MP Hex Nipple connects a 3/4-14 Male Nptf thread on one end to a 1/4-18 Male Nptf thread on the other. Both ends conform to SAE J476, making this fitting well-suited for hydraulic and industrial fluid systems where a secure, leak-resistant male-to-male connection is required between mismatched thread sizes.

Constructed from straight steel, this Brennan Industries Series 5404 fitting is rated for dynamic pressures up to 5,500 PSI. The hex body allows for standard wrench engagement during installation. With an overall length of 1.770 inches, it is a compact reducer nipple suited for tight or space-constrained assemblies.

SKU: 5404-12-04

Supplier Part Number (MPN): 5404-12-04

Alternate Part Numbers: A2083-12-4S, BR-5404-12-04

Specifications

Brand
BRENNAN
Connection Size 1
3/4 in
Connection Size 2
1/4 in
Connection Type
MNPT
Connection Type 1
Male SAE 30 deg NPTF
Connection Type 2
Male SAE 30 deg NPTF
Dimension Standards
SAE J476, SAE J514
Dimensions
1.77 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Nipple
Hex Size
1-1/8 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
5500 psi
Series
5404 Series
Thread 2 Drill Dimensions
0.281 in
Thread B1 Drill Dimensions
0.719 in
Thread Size
3/4-14, 1/4-18

Product Questions & Answers (1)

Question by: Ralph H on Oct 29, 2025, 9:24 PM
got a 3/4-14 male nptf port on one side and need to step down to 1/4-18 male nptf on the other. is this the right reducer nipple?
Answer by: Customer Support on Oct 31, 2025, 4:51 PM
For reducing between those two male pipe thread sizes, this hex nipple is a 3/4-14 Male NPTF on one end and a 1/4-18 Male NPTF on the other, with both ends conforming to SAE J476.

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