FSG: 59 — Electrical and Electronic Equipment Components
General Description
The Junction Box Assembly, cataloged under National Stock Number 5975-00-256-5121, is classified within Federal Supply Class 5975 (Electrical Hardware and Supplies) of the Electrical and Electronic Equipment Components group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Catalog Facts
Item Name
Junction Box Assembly
FSC / FSG
5975 — Electrical Hardware and Supplies (FSG 59)
Technical Specifications
Parameter
Value
NSN
5975-00-256-5121
Item Name
Junction Box Assembly
FSC / FSG
5975 / 59 — Electrical Hardware and Supplies
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
0N149668
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 5975 — Electrical Hardware and Supplies
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5975-00-000-0120
MOUNTING BASE,ELECTRICAL EQUIPME
5975-00-000-0126
5975-00-000-0126 · Item name not on file
5975-00-000-7420
5975-00-000-7420 · Item name not on file
5975-00-001-1397
5975-00-001-1397 · Item name not on file
5975-00-001-1538
5975-00-001-1538 · Item name not on file
5975-00-001-1539
5975-00-001-1539 · Item name not on file
5975-00-001-1542
5975-00-001-1542 · Item name not on file
5975-00-001-2444
5975-00-001-2444 · Item name not on file
Frequently Asked Questions
What is NSN 5975-00-256-5121?
NSN 5975-00-256-5121 is a Junction Box Assembly, classified under FSC 5975, Electrical Hardware and Supplies. Status: active.
What are the specifications of 5975-00-256-5121?
Key specifications for 5975-00-256-5121: Special Features: 2 BX PER ASSY,5.195 IN.O/A W;17.433 IN.O/A L;7.225 IN.O/A H;FLAT COVER;ALUMINUM ALLOY;PASSIVATED;CRANK ENTRANCE LOCATION;TEST DATA DOC:C98230-0N149668 IN. 0 specifications are documented in the U.S. Government catalog.
Is NSN 5975-00-256-5121 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.