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BACD40K — HOSE,AIR DUCT

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

BACD40K: HOSE,AIR DUCT.

The HOSE,AIR DUCT is a the manufacturer industrial component. Key specifications include material: FIBERGLASS FIRST PLY, connection_type: SOFT FIRST END, inside_diameter: 7.500 INCHES NOMINAL FIRST END IN, connection_style: ROUND FIRST END, special_features: CRUSH RESISTANT, style_designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-028-4539, 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
BACD40K
NSN: 4720-01-028-4539
FSC: 4720 — Hose and Flexible Tubing
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialFIBERGLASS FIRST PLY
connection_typeSOFT FIRST END
inside_diameter7.500 INCHES NOMINAL FIRST END IN
connection_styleROUND FIRST END
special_featuresCRUSH RESISTANT
style_designatorHELICALLY WOUND CONTINOUS WIRE SUPPORTED
end_overall_length1.500 INCHES NOMINAL FIRST END IN
end_inside_diameter4.000 INCHES NOMINAL FIRST END IN
cross-sectional_shape_styleROUND
measuring_method_and_length4.500 INCHES NOMINAL OVERALL IN
minimum_inside_bending_radius8.000 INCHES IN
NSN4720-01-028-4539
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: BACD40K · 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: 4.500 INCHES NOMINAL OVERALL IN
•
MINIMUM INSIDE BENDING RADIUS: 8.000 INCHES IN
•
CONNECTION STYLE: ROUND FIRST END
•
CONNECTION TYPE: SOFT FIRST END
•
STYLE DESIGNATOR: HELICALLY WOUND CONTINOUS WIRE SUPPORTED
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
INSIDE DIAMETER: 7.500 INCHES NOMINAL FIRST END IN
•
END OVERALL LENGTH: 1.500 INCHES NOMINAL FIRST END IN
TECHNICAL CHARACTERISTICS
MEASURING METHOD AND LENGTH4.500 INCHES NOMINAL OVERALL IN
MINIMUM INSIDE BENDING RADIUS8.000 INCHES IN
CONNECTION STYLEROUND FIRST END
CONNECTION TYPESOFT FIRST END
STYLE DESIGNATORHELICALLY WOUND CONTINOUS WIRE SUPPORTED
CROSS-SECTIONAL SHAPE STYLEROUND
INSIDE DIAMETER7.500 INCHES NOMINAL FIRST END IN
END OVERALL LENGTH1.500 INCHES NOMINAL FIRST END IN
SPECIAL FEATURESCRUSH RESISTANT
END INSIDE DIAMETER4.000 INCHES NOMINAL FIRST END IN
SUBSTITUTES & CROSS-REFERENCES 2
BACD40K16-018A6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AD1073Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BACD40K?
BACD40K is a HOSE,AIR DUCT.
What parts can replace BACD40K?
There are 2 known substitutes for BACD40K: BACD40K16-018A6, AD1073. Substitute compatibility should be verified for your specific system.
What is the NSN for BACD40K?
BACD40K is cataloged in the U.S. Government catalog under NSN 4720-01-028-4539. 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.