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PartsTable / COMPONENT / 4D98571
4D98571 ✓ 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

SOCKET,PLUG-IN ELECTRONIC COMPON. Key specifications include connection_type: THREADED INTERNAL PIPE FIRST END, part_name_assigned_by_controlling_agency: M-F 1/4"NPTF POWER TEAM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-519-8498, 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
4D98571
NSN: 4730-01-519-8498
FSC: 4730
CAGE: 04808 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV CURTISS-WRIGHT EMD (USA)
SPECIFICATIONS
connection_typeTHREADED INTERNAL PIPE FIRST END
part_name_assigned_by_controlling_agencyM-F 1/4"NPTF POWER TEAM
NSN4730-01-519-8498
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4D98571 · 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 TYPE: THREADED EXTERNAL PIPE SECOND END
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
PART NAME ASSIGNED BY CONTROLLING AGENCYM-F 1/4"NPTF POWER TEAM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
K35J133Interchangeable
interchangeable cross-reference
interchangeable
61009Interchangeable
interchangeable cross-reference
interchangeable
101-21-11-040Interchangeable
interchangeable cross-reference
interchangeable
E2909PC82Interchangeable
interchangeable cross-reference
interchangeable
31364Interchangeable
interchangeable cross-reference
interchangeable
716-002Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4D98571?
4D98571 is a SOCKET,PLUG-IN ELECTRONIC COMPON.
What parts can replace 4D98571?
There are 21 known substitutes for 4D98571: K35J133, 61009, 101-21-11-040 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4D98571?
4D98571 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-519-8498. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026