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21A18-04C30-5 — HOSE,AIR DUCT

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

21A18-04C30-5: HOSE,AIR DUCT.

The HOSE,AIR DUCT is a the manufacturer industrial component. Key specifications include material: FIBERGLASS AND RUBBER SILICONE CLASS Q ALL PLIES, connection_type: SOFT BOTH ENDS, inside_diameter: 1.000 INCHES NOMINAL BOTH ENDS IN, connection_style: ROUND BOTH ENDS, outside_diameter: 1.250 INCHES MINIMUM AND 1.500 INCHES MAXIMUM BOTH ENDS IN, style_designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-535-0448, 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
21A18-04C30-5
NSN: 4720-01-535-0448
FSC: 4720 — Hose and Flexible Tubing
CAGE: 60980 — MEGGITT OREGON INC DBA MEGGITT OREGON INC DIV MEGGITT POLYMERS & COMPOSITES (USA)
SPECIFICATIONS
materialFIBERGLASS AND RUBBER SILICONE CLASS Q ALL PLIES
connection_typeSOFT BOTH ENDS
inside_diameter1.000 INCHES NOMINAL BOTH ENDS IN
connection_styleROUND BOTH ENDS
outside_diameter1.250 INCHES MINIMUM AND 1.500 INCHES MAXIMUM BOTH ENDS IN
style_designatorHELICALLY WOUND CONTINOUS WIRE SUPPORTED
end_overall_length1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM BOTH ENDS IN
end_inside_diameter0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM BOTH ENDS IN
end_item_identificationU-2 GLOBAL HAWK
cross-sectional_shape_styleROUND
measuring_method_and_length20.000 INCHES NOMINAL OVERALL IN
part_name_assigned_by_controlling_agencyHOSE,AIR DUCT
NSN4720-01-535-0448
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 21A18-04C30-5 · 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: 20.000 INCHES NOMINAL OVERALL IN
•
CONNECTION STYLE: ROUND BOTH ENDS
•
CONNECTION TYPE: SOFT BOTH ENDS
•
STYLE DESIGNATOR: HELICALLY WOUND CONTINOUS WIRE SUPPORTED
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 1.250 INCHES MINIMUM AND 1.500 INCHES MAXIMUM BOTH ENDS IN
•
INSIDE DIAMETER: 1.000 INCHES NOMINAL BOTH ENDS IN
•
END OVERALL LENGTH: 1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM BOTH ENDS IN
TECHNICAL CHARACTERISTICS
MEASURING METHOD AND LENGTH20.000 INCHES NOMINAL OVERALL IN
CONNECTION STYLEROUND BOTH ENDS
CONNECTION TYPESOFT BOTH ENDS
STYLE DESIGNATORHELICALLY WOUND CONTINOUS WIRE SUPPORTED
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER1.250 INCHES MINIMUM AND 1.500 INCHES MAXIMUM BOTH ENDS IN
INSIDE DIAMETER1.000 INCHES NOMINAL BOTH ENDS IN
END OVERALL LENGTH1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM BOTH ENDS IN
END INSIDE DIAMETER0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM BOTH ENDS IN
PART NAME ASSIGNED BY CONTROLLING AGENCYHOSE,AIR DUCT
SUBSTITUTES & CROSS-REFERENCES 2
LE271-0104Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LE271-0104-0520Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21A18-04C30-5?
21A18-04C30-5 is a HOSE,AIR DUCT.
What parts can replace 21A18-04C30-5?
There are 2 known substitutes for 21A18-04C30-5: LE271-0104, LE271-0104-0520. Substitute compatibility should be verified for your specific system.
What is the NSN for 21A18-04C30-5?
21A18-04C30-5 is cataloged in the U.S. Government catalog under NSN 4720-01-535-0448. 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.