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AD778-11A17 — HOSE,AIR DUCT

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

AD778-11A17: HOSE,AIR DUCT.

The HOSE,AIR DUCT is a the manufacturer industrial component. Key specifications include material: STEEL THIRD PLY, wall_thickness: 0.075 INCHES MAXIMUM IN, connection_type: SOFT FIRST END, inside_diameter: 2.750 INCHES NOMINAL FIRST END IN, connection_style: ROUND FIRST END, style_designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-009-9075, 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
AD778-11A17
NSN: 4720-01-009-9075
FSC: 4720 — Hose and Flexible Tubing
CAGE: 98891 — HBD INDUSTRIES, INC (USA)
SPECIFICATIONS
materialSTEEL THIRD PLY
wall_thickness0.075 INCHES MAXIMUM IN
connection_typeSOFT FIRST END
inside_diameter2.750 INCHES NOMINAL FIRST END IN
connection_styleROUND FIRST END
style_designatorHELICALLY WOUND CONTINOUS WIRE SUPPORTED
features_providedOZONE RESISTANT
end_overall_length1.500 INCHES NOMINAL FIRST END IN
operating_pressure35.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
end_inside_diameter2.750 INCHES NOMINAL FIRST END IN
cross-sectional_shape_styleROUND
measuring_method_and_length17.000 INCHES NOMINAL OVERALL IN
NSN4720-01-009-9075
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: AD778-11A17 · 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: 17.000 INCHES NOMINAL OVERALL IN
•
MINIMUM INSIDE BENDING RADIUS: 1.375 INCHES IN
•
CONNECTION STYLE: ROUND FIRST END
•
CONNECTION TYPE: SOFT FIRST END
•
STYLE DESIGNATOR: HELICALLY WOUND CONTINOUS WIRE SUPPORTED
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
WALL THICKNESS: 0.075 INCHES MAXIMUM IN
•
OPERATING PRESSURE: 35.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
TECHNICAL CHARACTERISTICS
MEASURING METHOD AND LENGTH17.000 INCHES NOMINAL OVERALL IN
MINIMUM INSIDE BENDING RADIUS1.375 INCHES IN
CONNECTION STYLEROUND FIRST END
CONNECTION TYPESOFT FIRST END
STYLE DESIGNATORHELICALLY WOUND CONTINOUS WIRE SUPPORTED
CROSS-SECTIONAL SHAPE STYLEROUND
WALL THICKNESS0.075 INCHES MAXIMUM IN
OPERATING PRESSURE35.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
FEATURES PROVIDEDOZONE RESISTANT
INSIDE DIAMETER2.750 INCHES NOMINAL FIRST END IN
SUBSTITUTES & CROSS-REFERENCES 2
AD778Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
STSPH100-11A17Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AD778-11A17?
AD778-11A17 is a HOSE,AIR DUCT.
What parts can replace AD778-11A17?
There are 2 known substitutes for AD778-11A17: AD778, STSPH100-11A17. Substitute compatibility should be verified for your specific system.
What is the NSN for AD778-11A17?
AD778-11A17 is cataloged in the U.S. Government catalog under NSN 4720-01-009-9075. 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.