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Technical Data Sheet
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1966S ✓ Verified by PartsTable
— · 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 FITTING,LUBRICATION is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-172-0040, 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
1966S
NSN: 4730-00-172-0040
FSC: 4730
CAGE: 57733 — STEWART-WARNER CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
NSN4730-00-172-0040
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1966S · 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
•
SCREW THREAD SERIES DESIGNATOR: UNS
•
SPECIFICATION/STANDARD DATA: 81343 - AS15004 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION AND 81343 - AS35411 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
•
THREAD QUANTITY PER INCH: 28
•
PRESSURE RELIEF METHOD: PORT END
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
HEIGHT: 0.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT
•
MATERIAL: NICKEL ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SCREW THREAD SERIES DESIGNATORUNS
SPECIFICATION/STANDARD DATA81343 - AS15004 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION AND 81343 - AS35411 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
THREAD QUANTITY PER INCH28
PRESSURE RELIEF METHODPORT END
NOMINAL THREAD SIZE0.250 INCHES IN
HEIGHT0.500 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT
MATERIALNICKEL ALLOY OVERALL
WIDTH ACROSS FLATS0.312 INCHES NOMINAL IN
SPECIAL FEATURESSURFACE LOCATED BALL CHECK VALVE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 34
304-0295-00Interchangeable
interchangeable cross-reference
interchangeable
196-6Interchangeable
interchangeable cross-reference
interchangeable
7347847Interchangeable
interchangeable cross-reference
interchangeable
41070VInterchangeable
interchangeable cross-reference
interchangeable
701-6776765 SUBInterchangeable
interchangeable cross-reference
interchangeable
AS15001-2CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1966S?
1966S is a FITTING,LUBRICATION.
What parts can replace 1966S?
There are 34 known substitutes for 1966S: 304-0295-00, 196-6, 7347847 and 31 more. Substitute compatibility should be verified for your specific system.
Is 1966S still available?
1966S is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026