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Steel Adapter, 3/8-18 Male NPT Run To 1/4-18 Female NPT Run & Branch, Tee

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Description & Features

Designed for reducing branch and run connections in compressed air, hydraulic, and industrial fluid systems, the Steel Adapter, 3/8-18 Male NPT Run To 1/4-18 Female NPT Run & Branch, Tee provides a reliable tee configuration that steps down from a 3/8-18 male NPT run to a 1/4-18 female NPT run and branch. With an overall length of 1.45 inches, this compact fitting suits applications where space is limited and a clean inline reduction is needed.

Manufactured by Ssp Fittings Corp under the Pipe to Pipe Stainless Steel Adapters product line, this fitting is constructed from steel and carries catalog number C1FF14. The NPT thread configuration on all three ports allows for straightforward integration with standard threaded fittings and components across a range of industrial fluid and gas line assemblies.

SKU: HN-3/8X1/4

Supplier Part Number (MPN): 3/8X1/4HN

Alternate Part Numbers: C1FF14, MI-08750006, MINO-00766X98454

Specifications

Connection Size 1
3/8 in
Connection Size 2
1/4 in
Connection Type
MNPT
Connection Type 1
MNPT
Connection Type 2
MNPT
Dimension Standards
ANSI/ASME B1.20.1, ANSI/ASME BS 21, SAE J514, JIS B0203
Fitting Type
Nipple
Hex Size
3/4 in
Material
Stainless Steel
Material Construction
316 Stainless Steel
Series
HN Series
Thread Sealant
Without Thread Sealant
Thread Size
3/8-18 x 1/4-18

Product Questions & Answers (2)

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Question by: Tony Y on Jul 4, 2025, 11:25 AM
Running a 3/8 line into a tee but need both branch and run to drop down to 1/4 inch, this fitting do that in one shot?
Answer by: Customer Support on Jul 6, 2025, 7:55 AM
That's what it's built for. The run side takes a 3/8-18 male NPT connection, and both the run and branch on the other end are 1/4-18 female NPT. So you're splitting and stepping down in a single fitting rather than stacking multiple pieces together. At 1.45 inches overall, it stays compact enough for tight hydraulic connections situations in compressed air, hydraulic, or industrial fluid lines.
Question by: Kent M on Feb 20, 2026, 6:08 AM
trying to step a 3/8 npt line down to 1/4 on a tee, is that what this fitting does
Answer by: Customer Support on Feb 21, 2026, 7:02 AM
For a run connection, it goes from a 3/8-18 male NPT on one end to 1/4-18 female NPT on the other end, and the branch port is also 1/4-18 female NPT. It is a tee meant to reduce both the run and the branch to 1/4-18 female NPT.

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