The Spring and Hub Assy, cataloged under National Stock Number 6620-00-321-3576, is classified within Federal Supply Class 6620 (Engine Instruments) of the Instruments and Laboratory Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Catalog Facts
Item Name
Spring and Hub Assy
FSC / FSG
6620 — Engine Instruments (FSG 66)
Technical Specifications
Parameter
Value
NSN
6620-00-321-3576
Item Name
Spring and Hub Assy
FSC / FSG
6620 / 66 — Engine Instruments
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL B — Remove Demilitarization Key Points
Hazard
No hazard code in the DLA record (HMIC N)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
735506-4
5/9Secondary reference
Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems
735506-4
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 6620 — Engine Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6620-00-000-0124
6620-00-000-0124 · Item name not on file
6620-00-000-0548
6620-00-000-0548 · Item name not on file
6620-00-001-1398
STARTER AND SHAFT ASSEMBLY
6620-00-001-4552
6620-00-001-4552 · Item name not on file
6620-00-001-9331
6620-00-001-9331 · Item name not on file
6620-00-001-9332
6620-00-001-9332 · Item name not on file
6620-00-001-9333
6620-00-001-9333 · Item name not on file
6620-00-001-9334
6620-00-001-9334 · Item name not on file
Frequently Asked Questions
What is NSN 6620-00-321-3576?
NSN 6620-00-321-3576 is a Spring and Hub Assy, classified under FSC 6620, Engine Instruments. Status: active.
Is NSN 6620-00-321-3576 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 6620-00-321-3576?
NSN 6620-00-321-3576 has DEMIL Code B. 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.