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4720PL1971691 — HOSE ASSEMBLY,AIR DUCT

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

4720PL1971691: HOSE ASSEMBLY,AIR DUCT.

The HOSE ASSEMBLY,AIR DUCT is a the manufacturer industrial component. Key specifications include material: ALUMINUM FIRST PLY, style_designator: SLEEVE SECTION, end_item_identification: B737NG, cross-sectional_shape_style: OVAL, part_name_assigned_by_controlling_agency: EXHAUST MUFFLER ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-601-5889, 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
4720PL1971691
NSN: 4720-01-601-5889
FSC: 4720 — Hose and Flexible Tubing
CAGE: 9009H — JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX (POL)
SPECIFICATIONS
materialALUMINUM FIRST PLY
style_designatorSLEEVE SECTION
end_item_identificationB737NG
cross-sectional_shape_styleOVAL
part_name_assigned_by_controlling_agencyEXHAUST MUFFLER ASSEMBLY
NSN4720-01-601-5889
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 4720PL1971691 · 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
•
STYLE DESIGNATOR: SLEEVE SECTION
•
CROSS-SECTIONAL SHAPE STYLE: OVAL
•
MATERIAL: ALUMINUM FIRST PLY
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSLEEVE SECTION
CROSS-SECTIONAL SHAPE STYLEOVAL
SPECIAL FEATURESHOSE IS ACOUSTIC LINED WITH SILOCONE TO REDUCE SOUND LEVEL; END CAP PREVENTS BIRD ENTRY WHEN PARKED; BIRD NETTING HAS HEIGHT OF 5.0 INCHES; PARTS LIST FOLLOWS: 30N2/SL386B, WET SUIT MATERIAL; 850015-1, BANNER; 9428T43, HEAVY DUTY BIRD NET; 850010-1, END CAP; HOSE-FD, DUCT HOSE, FD1 FIBERGLASS; 850005-01 WELDMENT, EXHAUST MUFFLER; STRAIGHT SECTION OF MUFFLER IS 16.0 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYEXHAUST MUFFLER ASSEMBLY
END ITEM IDENTIFICATIONB737NG
MATERIALALUMINUM FIRST PLY
SUBSTITUTES & CROSS-REFERENCES 1
850000Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4720PL1971691?
4720PL1971691 is a HOSE ASSEMBLY,AIR DUCT.
What parts can replace 4720PL1971691?
There is 1 known substitute for 4720PL1971691: 850000. Substitute compatibility should be verified for your specific system.
What is the NSN for 4720PL1971691?
4720PL1971691 is cataloged in the U.S. Government catalog under NSN 4720-01-601-5889. 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.