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3/8X1/4 FG-SS — Technical Data Sheet

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— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: REDUCER,SPECIAL. This part is cataloged in the Federal Logistics Information System under NSN 4730-00-087-4811, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
3/8X1/4 FG-SS
NSN: 4730-00-087-4811
FSC: 4730
CAGE: 45681 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV CORPORATE HEADQUARTERS (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyREDUCER,SPECIAL
NSN4730-00-087-4811
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3/8X1/4 FG-SS · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NOMINAL THREAD SIZE: 0.250 INCHES SECOND END IN
•
CONNECTION STYLE: PLAIN (PIPE) FIRST END
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
REDUCER TYPE: CONCENTRIC
•
NOMINAL OVERALL LENGTH: 1.440 INCHES IN
•
THREAD SERIES DESIGNATOR: NPTF ALL ENDS
TECHNICAL CHARACTERISTICS
NOMINAL THREAD SIZE0.250 INCHES SECOND END IN
CONNECTION STYLEPLAIN (PIPE) FIRST END
NOMINAL THREAD SIZE0.375 INCHES FIRST END IN
CONNECTION STYLEPLAIN (PIPE) SECOND END
SURFACE TREATMENTPASSIVATE OVERALL
REDUCER TYPECONCENTRIC
NOMINAL OVERALL LENGTH1.440 INCHES IN
THREAD SERIES DESIGNATORNPTF ALL ENDS
NONDEFINITIVE SPEC/STD DATA40 FIGURE
SPECIFICATION/STANDARD DATA81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
875291InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
50-8370InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
30-8370InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A8095InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
954F030 ITEM 64InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
8-6-140139SAInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3/8X1/4 FG-SS?
3/8X1/4 FG-SS is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 3/8X1/4 FG-SS?
There are 17 known substitutes for 3/8X1/4 FG-SS: 875291, 50-8370, 30-8370 and 14 more. Substitute compatibility should be verified for your specific system.
Is 3/8X1/4 FG-SS still available?
3/8X1/4 FG-SS is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: September 2026