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C4V1658-1 — HOSE ASSEMBLY,AIR DUCT

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

C4V1658-1: HOSE ASSEMBLY,AIR DUCT.

The HOSE ASSEMBLY,AIR DUCT is a the manufacturer industrial component. Key specifications include material: PLASTIC SINGLE PLY, coupling_style: BEADED FIRST END, connection_type: COUPLING FIRST END, cross-sectional_shape_style: OVAL, measuring_method_and_length: 17.820 INCHES NOMINAL OVERALL IN. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-455-4121, 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
C4V1658-1
NSN: 4720-00-455-4121
FSC: 4720 — Hose and Flexible Tubing
CAGE: 71867 — DE HAVILLAND AIRCRAFT OF CANADA LIMITED (CAN)
SPECIFICATIONS
materialPLASTIC SINGLE PLY
coupling_styleBEADED FIRST END
connection_typeCOUPLING FIRST END
cross-sectional_shape_styleOVAL
measuring_method_and_length17.820 INCHES NOMINAL OVERALL IN
NSN4720-00-455-4121
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: C4V1658-1 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MEASURING METHOD AND LENGTH: 17.820 INCHES NOMINAL OVERALL IN
•
CONNECTION TYPE: COUPLING FIRST END
•
COUPLING STYLE: BEADED FIRST END
•
CROSS-SECTIONAL SHAPE STYLE: OVAL
•
MATERIAL: PLASTIC SINGLE PLY
TECHNICAL CHARACTERISTICS
MEASURING METHOD AND LENGTH17.820 INCHES NOMINAL OVERALL IN
CONNECTION TYPECOUPLING FIRST END
COUPLING STYLEBEADED FIRST END
CROSS-SECTIONAL SHAPE STYLEOVAL
MATERIALPLASTIC SINGLE PLY
OTHER ITEMS IN FSC 4720 — Hose and Flexible Tubing
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4720-00-000-0080 4720-00-000-0081 4720-00-000-0084 4720-00-000-0724 4720-00-001-0014 4720-00-001-0015 4720-00-001-0023 4720-00-001-0025
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is C4V1658-1?
C4V1658-1 is a HOSE ASSEMBLY,AIR DUCT.
What is the NSN for C4V1658-1?
C4V1658-1 is cataloged in the U.S. Government catalog under NSN 4720-00-455-4121. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.