NSN 6620-00-421-0447 — this item is cataloged by the U.S. Government under National Stock Number 6620-00-421-0447. Manufacturer of record part number: 4391K71G709.
Also searched as6620-00-421-0447 ·
6620004210447 ·
NIIN 004210447 ·
00-421-0447 ·
FSC 6620 Engine Instruments · CAGE 45934 · 4391K71G709
Nearby stock numbers← 6620-00-420-8456
·
6620-00-421-0448 Support Assembly, Transmitter →
Features
Hub and Spring Assembly — FSC 6620
1 manufacturer part number on file
Manufacturer of record: Ontic Engineering & Manufacturing, Inc Dba Ontic Us
Identification
NSN: 6620-00-421-0447
NIIN: 004210447
FSC: 6620 — Engine Instruments
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: 4391K71G709
Manufacturer: Ontic Engineering & Manufacturing, Inc Dba Ontic Us
General Description
The Hub and Spring Assembly, cataloged under National Stock Number 6620-00-421-0447, is classified within Federal Supply Class 6620 (Engine Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6620-00-421-0447
Primary Part Number
4391K71G709
Item Name
Hub and Spring Assembly
FSC / FSG
6620 / 66 — Engine Instruments
Manufacturer
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA)
Reference documents
Reference
Meaning
4391K71G709
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 6620-00-421-0447?
NSN 6620-00-421-0447 is a Hub and Spring Assembly, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 6620, Engine Instruments. Status: active.
What part numbers are listed for NSN 6620-00-421-0447?
NSN 6620-00-421-0447 has 1 manufacturer part number on file: 4391K71G709 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
What are the specifications of 4391K71G709?
Key specifications for 4391K71G709: End Item Identification: A-7 CORSAIR II ACFT. 0 specifications are documented in the U.S. Government catalog.
Is NSN 6620-00-421-0447 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.