NS4-4-1F Per Cat.: BP-40C

1/4"FL NUT(F)

NS4-4-1F Flare Forged Short Nut - SAE 45 Deg Flare | Brass Pro

Cross-reference
04018-04 098197766205 1015126 1114x4 1114X4SH 141S-4 14FS-4 14FSX-4 404 40-4 41F-4 41FP-4 440-4 441S-4 641-FS-04 641S-4 A 05051 D404 D40-4 E4NUT E4-NUT F40009 FF14S-4 NS4-4 NS-4-4 NS4-4N NS4C NS4X4N NSF4-C P-NS-4-4 S141S-4 10039

Our products are manufactured to meet strict international standards. Lead-free brass materials comply with NSF 61, ISO 9001:2015, and AB1953 requirements, while our air brake fittings meet FMVSS 106 standards. Supported by over 100 CNC machines, advanced inspection equipment, and in-house spectrometer analysis, we maintain precise quality control throughout the manufacturing process. Brass Pro has built long-term partnerships with customers worldwide.

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Testing & Specs

Most stringent international standards

Our pneumatic and D.O.T. air brake fittings are rigorously tested to meet maximum operating pressures up to 150 PSI for standard commercial vehicle applications, ensuring leak-free performance under heavy-duty conditions.

Engineered for extreme environments, our high-performance brass fittings typically operate reliably in temperatures ranging from -40°F to +200°F (-40°C to 93°C), depending on the specific D.O.T. or industrial standards.

We implement strict quality control at every stage. Our fittings undergo extensive tensile strength testing, vibration resistance checks, and cycle testing to guarantee long-lasting durability in commercial transportation and industrial pneumatics.

Yes. Backed by our integrated brass mill and over 100 CNC machines, we provide full OEM/ODM services. We can manufacture products using standard brass, DZR brass, or Lead-Free brass (AB1953 / NSF-61 compliant) based on your specific requirements.

Contact Info

NS4-4-1F Per Cat.: BP-40C

1/4"FL NUT(F)

What is the pressure rating for D.O.T. fittings?

What is the operating temperature range?

How do you test product durability?

Do you provide custom OEM solutions?