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Technical Data Sheet
PartsTable / COMPONENT / 3-4 NPT,STL
3-4 NPT,STL ✓ 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 3-4 NPT,STL is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-928-8767, 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
3-4 NPT,STL
NSN: 4730-00-928-8767
FSC: 4730
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
Part Number3-4 NPT,STL
NSN4730-00-928-8767
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3-4 NPT,STL · 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
•
CONNECTION STYLE: PLAIN (PIPE) FIRST END
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766,CLASS 316,1/4 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.750 INCHES FIRST END IN
•
THREAD SERIES DESIGNATOR: NPT FIRST END
•
SURFACE TREATMENT: PASSIVATE INSIDE
•
STYLE DESIGNATOR: RIGID, SHORT CENTER WRENCHING FACILITY
•
SPECIFICATION/STANDARD DATA: 88044-AN910 GOVERNMENT STANDARD AND 81343-AS4842 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLEPLAIN (PIPE) FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766,CLASS 316,1/4 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL PIPE SIZE ACCOMMODATED0.750 INCHES FIRST END IN
THREAD SERIES DESIGNATORNPT FIRST END
SURFACE TREATMENTPASSIVATE INSIDE
STYLE DESIGNATORRIGID, SHORT CENTER WRENCHING FACILITY
SPECIFICATION/STANDARD DATA88044-AN910 GOVERNMENT STANDARD AND 81343-AS4842 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
SURFACE TREATMENTPASSIVATE OUTSIDE
NOMINAL THREAD SIZE0.750 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
AN9-10Interchangeable
interchangeable cross-reference
interchangeable
2D56Interchangeable
interchangeable cross-reference
interchangeable
112262H1Interchangeable
interchangeable cross-reference
interchangeable
FC2678Interchangeable
interchangeable cross-reference
interchangeable
54624Interchangeable
interchangeable cross-reference
interchangeable
C603-9052Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3-4 NPT,STL?
3-4 NPT,STL is a 3-4 NPT,STL.
What parts can replace 3-4 NPT,STL?
There are 15 known substitutes for 3-4 NPT,STL: AN9-10, 2D56, 112262H1 and 12 more. Substitute compatibility should be verified for your specific system.
Is 3-4 NPT,STL still available?
3-4 NPT,STL 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