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Technical Data Sheet
PartsTable / COMPONENT / C7999-1
C7999-1 ✓ 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 WHEEL ASSEMBLY,LANDING is a the manufacturer industrial component. Key specifications include leg_length: 2.720 INCHES MINIMUM AND 2.780 INCHES MAXIMUM FIRST END IN, connection_type: UNTHREADED INTERNAL TUBE FIRST END, connection_style: PLAIN (TUBE) FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-054-8508, 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
C7999-1
NSN: 4730-01-054-8508
FSC: 4730
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)
SPECIFICATIONS
leg_length2.720 INCHES MINIMUM AND 2.780 INCHES MAXIMUM FIRST END IN
connection_typeUNTHREADED INTERNAL TUBE FIRST END
connection_stylePLAIN (TUBE) FIRST END
NSN4730-01-054-8508
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: C7999-1 · 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
•
LEG LENGTH: 2.720 INCHES MINIMUM AND 2.780 INCHES MAXIMUM SECOND END IN
•
CONNECTION STYLE: PLAIN (TUBE) FIRST END
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
LEG LENGTH2.720 INCHES MINIMUM AND 2.780 INCHES MAXIMUM SECOND END IN
CONNECTION STYLEPLAIN (TUBE) FIRST END
LEG LENGTH2.720 INCHES MINIMUM AND 2.780 INCHES MAXIMUM THIRD END IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE FIRST END
LEG LENGTH2.720 INCHES MINIMUM AND 2.780 INCHES MAXIMUM FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
14660Interchangeable
interchangeable cross-reference
interchangeable
6051319-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C7999-1?
C7999-1 is a WHEEL ASSEMBLY,LANDING.
What parts can replace C7999-1?
There are 2 known substitutes for C7999-1: 14660, 6051319-1. Substitute compatibility should be verified for your specific system.
What is the NSN for C7999-1?
C7999-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-054-8508. 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