NSN 5935-01-629-8949 · NIIN 016298949 · Part number 257A535-12
Lockheed Martin Corporation Div Rotary and Mission Systems · FSC 5935 — Connectors, Electrical · FSG 59 — Electrical and Electronic Equipment Components · CAGE 03640
Government record, cited
NSN 5935-01-629-8949 — this item is cataloged by the U.S. Government under National Stock Number 5935-01-629-8949. Manufacturer of record part number: 257A535-12.
Manufacturer of record: Lockheed Martin Corporation Div Rotary and Mission Systems
Identification
NSN: 5935-01-629-8949
NIIN: 016298949
FSC: 5935 — Connectors, Electrical
FSG: 59 — Electrical and Electronic Equipment Components
Primary part number: 257A535-12
Manufacturer: Lockheed Martin Corporation Div Rotary and Mission Systems
General Description
The Backshell,electrical Connector, cataloged under National Stock Number 5935-01-629-8949, is classified within Federal Supply Class 5935 (Connectors, Electrical) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government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
Backshell,electrical Connector
FSC / FSG
5935 — Connectors, Electrical (FSG 59)
Manufacturers
Glenair, Inc. (CAGE 06324); Lockheed Martin Corporation Div Rotary and Mission Systems (CAGE 03640)
Technical Specifications
Parameter
Value
NSN
5935-01-629-8949
Primary Part Number
257A535-12
Item Name
Backshell,electrical Connector
FSC / FSG
5935 / 59 — Connectors, Electrical
Manufacturer
Lockheed Martin Corporation Div Rotary and Mission Systems
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
⇄Related Items10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
Reference documents
Reference
Meaning
257A535
D/9Drawing number reference only
Glenair, Inc.
Related Parts
5935-01-630-7997POSSIBLE MATCH
BACKSHELL,ELECTRICAL CONNECTOR
440HH039NF2105
5935-01-630-9211POSSIBLE MATCH
BACKSHELL,ELECTRICAL CONNECTOR
440FH039M1405
5935-01-630-9296POSSIBLE MATCH
BACKSHELL,ELECTRICAL CONNECTOR
440HH039NF1905
5935-01-630-9298POSSIBLE MATCH
BACKSHELL,ELECTRICAL CONNECTOR
440HJ039NF1104
5935-01-630-9302POSSIBLE MATCH
BACKSHELL,ELECTRICAL CONNECTOR
440FS039M1004
5935-01-631-1452POSSIBLE MATCH
BACKSHELL,ELECTRICAL CONNECTOR
440HS039NF1706-3
5935-01-631-1489POSSIBLE MATCH
BACKSHELL,ELECTRICAL CONNECTOR
440HS039NF1907-3
5935-01-631-1507POSSIBLE MATCH
BACKSHELL,ELECTRICAL CONNECTOR
440HS039NF1102-4
5935-01-631-1521POSSIBLE MATCH
BACKSHELL,ELECTRICAL CONNECTOR
440HJ039NF1706
5935-01-631-1535POSSIBLE MATCH
BACKSHELL,ELECTRICAL CONNECTOR
440HJ039NF2302
Frequently Asked Questions
What is NSN 5935-01-629-8949?
NSN 5935-01-629-8949 is a Backshell,electrical Connector, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 5935, Connectors, Electrical. Status: active.
What part numbers are listed for NSN 5935-01-629-8949?
NSN 5935-01-629-8949 has 2 manufacturer part numbers on file: 440HS039NF2107-3 (Glenair, Inc.), 257A535-12 (Lockheed Martin Corporation Div Rotary and Mission Systems).
What NSN replaces 5935-01-629-8949?
10 possible matches (shared part number, not a government interchangeability claim): 5935-01-630-7997, 5935-01-630-9211, 5935-01-630-9296. Verify interchangeability with system specifications before substitution.
Is NSN 5935-01-629-8949 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.