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156521 — HOSE,AIR DUCT

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

156521: HOSE,AIR DUCT.

The HOSE,AIR DUCT is a the manufacturer industrial component. Key specifications include end_item_identification: PRESSURE RELIEF VALVE, part_name_assigned_by_controlling_agency: DISK INSERT. This part is cataloged in the U.S.

Government catalog under NSN 4720-00-230-3210, 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
156521
NSN: 4720-00-230-3210
NIINs: 002303210, 005291495, 006593083, 016054044
FSC: 4720 — Hose and Flexible Tubing
CAGE: 99167 — HAMILTON SUNDSTRAND CORPORATION (USA)
SPECIFICATIONS
end_item_identificationPRESSURE RELIEF VALVE
part_name_assigned_by_controlling_agencyDISK INSERT
NSN4720-00-230-3210
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 156521 · 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
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 156521?
156521 is a HOSE,AIR DUCT.
What is the NSN for 156521?
156521 is cataloged in the U.S. Government catalog under NSN 4720-00-230-3210. This indicates validated use in U.S. government and defense supply chains.
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