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A1-43998D — HOSE ASSEMBLY,AIR DUCT

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

A1-43998D: HOSE ASSEMBLY,AIR DUCT.

The HOSE ASSEMBLY,AIR DUCT is a the manufacturer industrial component. Key specifications include end_item_identification: AN/TPS75, part_name_assigned_by_controlling_agency: EXHAUST DUCT. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-593-2371, 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
A1-43998D
NSN: 4720-01-593-2371
FSC: 4720 — Hose and Flexible Tubing
CAGE: 14850 — ARMY, UNITED STATES DEPARTMENT OF THE DBA DIORECTORATE OF PRODUCTION ENGINEERING DIV TOBYHANNA ARMY DEPOT (USA)
SPECIFICATIONS
end_item_identificationAN/TPS75
part_name_assigned_by_controlling_agencyEXHAUST DUCT
NSN4720-01-593-2371
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: A1-43998D · 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
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYEXHAUST DUCT
END ITEM IDENTIFICATIONAN/TPS75
SUBSTITUTES & CROSS-REFERENCES 1
21500Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 A1-43998D?
A1-43998D is a HOSE ASSEMBLY,AIR DUCT.
What parts can replace A1-43998D?
There is 1 known substitute for A1-43998D: 21500. Substitute compatibility should be verified for your specific system.
What is the NSN for A1-43998D?
A1-43998D is cataloged in the U.S. Government catalog under NSN 4720-01-593-2371. This indicates validated use in U.S. government and defense supply chains.
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