NSN 1440-01-300-1843 · NIIN 013001843 · Part number 20SK578-6
Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba · FSC 1440 — Launchers, Guided Missile · FSG 14 — Guided Missiles · CAGE 21439
Government record, cited
NSN 1440-01-300-1843 — this item is cataloged by the U.S. Government under National Stock Number 1440-01-300-1843. Manufacturer of record part number: 20SK578-6.
Manufacturer of record: Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
Identification
NSN: 1440-01-300-1843
NIIN: 013001843
FSC: 1440 — Launchers, Guided Missile
FSG: 14 — Guided Missiles
Primary part number: 20SK578-6
Manufacturer: Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
General Description
The Sheave Assembly, cataloged under National Stock Number 1440-01-300-1843, is classified within Federal Supply Class 1440 (Launchers, Guided Missile) of the Guided Missiles 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.
Technical Specifications
Parameter
Value
NSN
1440-01-300-1843
Primary Part Number
20SK578-6
Item Name
Sheave Assembly
FSC / FSG
1440 / 14 — Launchers, Guided Missile
Manufacturer
Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba (USA)
No interchangeability data on file.
Other items in FSC 1440 — Launchers, Guided Missile
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1440-00-000-0161
SIGHT UNIT,STABLIZE
1440-00-000-0162
SIGHT UNIT,STABLIZE
1440-00-001-1268
1440-00-001-1268 · Item name not on file
1440-00-001-2476
SPRING ASSEMBLY,SHOCK ISOLATOR
1440-00-001-2477
ISOLATOR,SHOCK,LIQUID SPRING
1440-00-001-3999
SPACER ASSEMBLY
1440-00-001-4000
1440-00-001-4000 · Item name not on file
1440-00-001-4598
SWAYBRACE ASSY
Frequently Asked Questions
What is NSN 1440-01-300-1843?
NSN 1440-01-300-1843 is a Sheave Assembly, manufactured by Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba, classified under FSC 1440, Launchers, Guided Missile. Status: active.
What part numbers are listed for NSN 1440-01-300-1843?
NSN 1440-01-300-1843 has 2 manufacturer part numbers on file: 20SK578-6 (Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd), 20SK578-6 (Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba).
What are the specifications of 20SK578-6?
Key specifications for 20SK578-6: Special Features: PULLEY SYSTEM ON A LAUNCHER FOR A DRONE. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1440-01-300-1843 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.
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.