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4075400 ✓ 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 INSERT,TUBE FITTING is a the manufacturer industrial component. Key specifications include fsc_application_data: F-100-PW-229 ENGINE, part_name_assigned_by_controlling_agency: INVERTED NUT, SPANNER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-320-9531, 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
4075400
NSN: 4730-01-320-9531
FSC: 4730
CAGE: 52661 — RTX CORPORATION DIV PRATT & WHITNEY (USA)
SPECIFICATIONS
fsc_application_dataF-100-PW-229 ENGINE
part_name_assigned_by_controlling_agencyINVERTED NUT, SPANNER
NSN4730-01-320-9531
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4075400 · 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
•
FSC APPLICATION DATA: F-100-PW-229 ENGINE
TECHNICAL CHARACTERISTICS (FLIS)
PART NAME ASSIGNED BY CONTROLLING AGENCYINVERTED NUT, SPANNER
FSC APPLICATION DATAF-100-PW-229 ENGINE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
MD-74002-117Interchangeable
interchangeable cross-reference
interchangeable
68B818040-117Interchangeable
interchangeable cross-reference
interchangeable
3290-17Interchangeable
interchangeable cross-reference
interchangeable
4730PL0890930Interchangeable
Same NIIN cross-reference
interchangeable
4075117Interchangeable
Same NIIN cross-reference
interchangeable
4075397Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4075400?
4075400 is a INSERT,TUBE FITTING.
What parts can replace 4075400?
There are 7 known substitutes for 4075400: MD-74002-117, 68B818040-117, 3290-17 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4075400?
4075400 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-320-9531. 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