NSN 1720-01-323-9518 · NIIN 013239518 · Part number 33411-2
Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba · FSC 1720 — Aircraft Launching Equipment · FSG 17 — Aircraft Launch, Landing, and Ground Handling Equipment · CAGE 21439
Government record, cited
NSN 1720-01-323-9518 — this item is cataloged by the U.S. Government under National Stock Number 1720-01-323-9518. Manufacturer of record part number: 33411-2.
Manufacturer of record: Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
Identification
NSN: 1720-01-323-9518
NIIN: 013239518
FSC: 1720 — Aircraft Launching Equipment
FSG: 17 — Aircraft Launch, Landing, and Ground Handling Equipment
Primary part number: 33411-2
Manufacturer: Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
General Description
The Sheave Assy,fixed, cataloged under National Stock Number 1720-01-323-9518, is classified within Federal Supply Class 1720 (Aircraft Launching Equipment) of the Aircraft Launch, Landing, and Ground Handling Equipment group. The manufacturer of record is Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Catalog Facts
Item Name
Sheave Assy,fixed
FSC / FSG
1720 — Aircraft Launching Equipment (FSG 17)
Manufacturers
Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba (CAGE 21439); Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd (CAGE U1918)
Technical Specifications
Parameter
Value
NSN
1720-01-323-9518
Primary Part Number
33411-2
Item Name
Sheave Assy,fixed
FSC / FSG
1720 / 17 — Aircraft Launching Equipment
Manufacturer
Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd (GBR)
No interchangeability data on file.
Other items in FSC 1720 — Aircraft Launching Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1720-00-001-4571
CAM,CUTOFF
1720-00-001-4572
CAM,VALVE
1720-00-001-4573
CROSSOVER BLOCK
1720-00-003-0437
1720-00-003-0437 · Item name not on file
1720-00-003-0438
1720-00-003-0438 · Item name not on file
1720-00-003-0439
1720-00-003-0439 · Item name not on file
1720-00-003-1503
NEEDLE-CUSHION
1720-00-003-6410
1720-00-003-6410 · Item name not on file
Frequently Asked Questions
What is NSN 1720-01-323-9518?
NSN 1720-01-323-9518 is a Sheave Assy,fixed, manufactured by Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba, classified under FSC 1720, Aircraft Launching Equipment. Status: active.
What part numbers are listed for NSN 1720-01-323-9518?
NSN 1720-01-323-9518 has 2 manufacturer part numbers on file: 33411-2 (Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba), 33411-2 (Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd).
Is NSN 1720-01-323-9518 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
What is the DEMIL code for NSN 1720-01-323-9518?
NSN 1720-01-323-9518 has DEMIL Code C. Demilitarization may be required before disposal or transfer to non-military entities.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.