NSN 2920-00-561-9741 · NIIN 005619741 · Part number BL522
United Technologies Corp Electro Systems Inc · FSC 2920 — Engine Electrical System Components, Nonaircraft · FSG 29 — Engine Accessories · CAGE 24956
Government record, cited
NSN 2920-00-561-9741 — this item is cataloged by the U.S. Government under National Stock Number 2920-00-561-9741. Manufacturer of record part number: BL522.
Also searched as2920-00-561-9741 ·
2920005619741 ·
NIIN 005619741 ·
00-561-9741 ·
FSC 2920 Engine Electrical System Components, Nonaircraft · CAGE 24956 · BL522 · 8357711
General Characteristics Item Description: PLASTIC,0.547 IN.WIDE,1.000 IN.HIGH IN
2 manufacturer part numbers on file
Manufacturer of record: United Technologies Corp Electro Systems Inc
Identification
NSN: 2920-00-561-9741
NIIN: 005619741
FSC: 2920 — Engine Electrical System Components, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: BL522
Manufacturer: United Technologies Corp Electro Systems Inc
General Description
The Block,magneto, cataloged under National Stock Number 2920-00-561-9741, is classified within Federal Supply Class 2920 (Engine Electrical System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is United Technologies Corp Electro Systems Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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
2920-00-561-9741
Primary Part Number
BL522
Item Name
Block,magneto
FSC / FSG
2920 / 29 — Engine Electrical System Components, Nonaircraft
United Technologies Corp Electro Systems Inc (USA)
Reference documents
Reference
Meaning
BL522
5/9Secondary reference
Ambac International Corporation Div Ambac International
No interchangeability data on file.
Other items in FSC 2920 — Engine Electrical System Components, Nonaircraft
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2920-00-003-5173
2920-00-003-5173 · Item name not on file
2920-00-005-1596
2920-00-005-1596 · Item name not on file
2920-00-035-6718
2920-00-035-6718 · Item name not on file
2920-00-158-2674
REGULATOR,ENGINE GENERATOR
2920-00-255-4938
REGULATOR,ENGINE GENERATOR
2920-00-424-3259
PLATE ASSEMBLY,SEAL
2920-00-424-3259
PLATE ASSEMBLY,SEAL
2920-00-424-3259
PLATE ASSEMBLY,SEAL
Frequently Asked Questions
What is NSN 2920-00-561-9741?
NSN 2920-00-561-9741 is a Block,magneto, manufactured by United Technologies Corp Electro Systems Inc, classified under FSC 2920, Engine Electrical System Components, Nonaircraft. Status: active.
What part numbers are listed for NSN 2920-00-561-9741?
NSN 2920-00-561-9741 has 2 manufacturer part numbers on file: 8357711 (U S Army Tank Automotive Command Amsta-Im-Mm), BL522 (United Technologies Corp Electro Systems Inc).
What are the specifications of BL522?
Key specifications for BL522: General Characteristics Item Description: PLASTIC,0.547 IN.WIDE,1.000 IN.HIGH IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 2920-00-561-9741 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.