FSG: 58 — Communication, Detection, and Coherent Radiation Equipment
General Description
The Stepswitch, cataloged under National Stock Number 5845-00-949-7660, is classified within Federal Supply Class 5845 (Underwater Sound Equipment) of the Communication, Detection, and Coherent Radiation Equipment group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Stepswitch
FSC / FSG
5845 — Underwater Sound Equipment (FSG 58)
Technical Specifications
Parameter
Value
NSN
5845-00-949-7660
Item Name
Stepswitch
FSC / FSG
5845 / 58 — Underwater Sound Equipment
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)
⇄Related Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4520-01-256-356549342POSSIBLE MATCH
HEATING ELEMENT,ELECTRICAL,NONIM
Possible match (shared part number)Indeeco Llc Dba Indeeco
3040-01-392-240849342POSSIBLE MATCH
GUIDE,PISTON ROD
Possible match (shared part number)Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4720-01-428-3168POSSIBLE MATCH
HOSE,AIR DUCT
Possible match (shared part number)
2510-01-656-590449342POSSIBLE MATCH
DOOR,VEHICULAR
Possible match (shared part number)Tld Wollard Llc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
49342
3/2Design control — primary reference
U.S. Government activity
Related Parts
4520-01-256-3565POSSIBLE MATCH
HEATING ELEMENT,ELECTRICAL,NONIM
49342
3040-01-392-2408POSSIBLE MATCH
GUIDE,PISTON ROD
49342
4720-01-428-3168POSSIBLE MATCH
HOSE,AIR DUCT
2510-01-656-5904POSSIBLE MATCH
DOOR,VEHICULAR
49342
Frequently Asked Questions
What is NSN 5845-00-949-7660?
NSN 5845-00-949-7660 is a Stepswitch, classified under FSC 5845, Underwater Sound Equipment. Status: active.
What NSN replaces 5845-00-949-7660?
4 possible matches (shared part number, not a government interchangeability claim): 4520-01-256-3565, 3040-01-392-2408, 4720-01-428-3168. Verify interchangeability with system specifications before substitution.
Is NSN 5845-00-949-7660 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 5845-00-949-7660?
NSN 5845-00-949-7660 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.