NSN 1680-01-547-8071 · NIIN 015478071 · Part number MC21571
Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace · FSC 1680 — Miscellaneous Aircraft Accessories and Components · FSG 16 — Aircraft Components and Accessories · CAGE 76050
Government record, cited
NSN 1680-01-547-8071 — this item is cataloged by the U.S. Government under National Stock Number 1680-01-547-8071. Manufacturer of record part number: MC21571.
Also searched as1680-01-547-8071 ·
1680015478071 ·
NIIN 015478071 ·
01-547-8071 ·
FSC 1680 Miscellaneous Aircraft Accessories and Components · CAGE 76050 · MC21571
Manufacturer of record: Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace
Identification
NSN: 1680-01-547-8071
NIIN: 015478071
FSC: 1680 — Miscellaneous Aircraft Accessories and Components
FSG: 16 — Aircraft Components and Accessories
Primary part number: MC21571
Manufacturer: Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace
General Description
The Spring,helical,c,ai, cataloged under National Stock Number 1680-01-547-8071, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1680-01-547-8071
Primary Part Number
MC21571
Item Name
Spring,helical,c,ai
FSC / FSG
1680 / 16 — Miscellaneous Aircraft Accessories and Components
Manufacturer
Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace
Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace (USA)
No interchangeability data on file.
Other items in FSC 1680 — Miscellaneous Aircraft Accessories and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1680-00-001-1736
DUCT ASSEMBLY,BRANCHED
1680-00-003-3721
1680-00-003-3721 · Item name not on file
1680-00-009-3782
PISTON,EJECTOR,INNER
1680-00-009-6180
1680-00-009-6180 · Item name not on file
1680-00-475-0002
TIP,RUBBER CONTROL
1680-00-696-6170
ADAPTER,SCREW END A
1680-00-867-7158
COVER,GEARCASE
1680-00-885-0923
KNOB ASSY,LANDING G
Frequently Asked Questions
What is NSN 1680-01-547-8071?
NSN 1680-01-547-8071 is a Spring,helical,c,ai, manufactured by Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
What part numbers are listed for NSN 1680-01-547-8071?
NSN 1680-01-547-8071 has 1 manufacturer part number on file: MC21571 (Eaton Aerospace Llc Dba Sterer Engineering Div M.c.aerospace).
What are the specifications of MC21571?
Key specifications for MC21571: End Item Identification: NHA: VALVE,REGULATING,SY; V-22. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1680-01-547-8071 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.