PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

10257-1Polarizing Key,electrical Connec

Alliant Techsystems Operations Llc Div Defense Electronic Systems · NSN 5935-00-371-9378 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-00-371-9378 — this item is cataloged by the U.S. Government under National Stock Number 5935-00-371-9378. Primary manufacturer part number: 10257-1.
Features
  • Polarizing Key,electrical Connec — FSC 5935
  • Shape: IRREGULAR
  • Material: PLASTIC NYLON
  • 3 verified cross-references
  • Primary manufacturer: Alliant Techsystems Operations Llc Div Defense Electronic Systems
Applications
  • Applications requiring Plastic Nylon construction
General Description

The Polarizing Key,electrical Connec, cataloged under National Stock Number 5935-00-371-9378, is classified within Federal Supply Class 5935 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Alliant Techsystems Operations Llc Div Defense Electronic Systems. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5935-00-371-9378
Primary Part Number10257-1
Item NamePolarizing Key,electrical Connec
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerAlliant Techsystems Operations Llc Div Defense Electronic Systems
StatusACTIVE
ShapeIRREGULAR
MaterialPLASTIC NYLON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4730-00-037-4903102-571 INTERCHANGEABLE
Strainer Element,sediment
Hamilton Sundstrand Corporation
5305-00-071-358089-975D INTERCHANGEABLE
Setscrew
Dana Corp Spicer Transmission Div
5330-00-291-234960239 INTERCHANGEABLE
Seal,plain Encased
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
5320-00-501-35225013522 INTERCHANGEABLE
Rivet,solid
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
4820-00-699-1550102571 INTERCHANGEABLE
Valve,safety Relief
Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S
5360-00-915-5230102-57-1 INTERCHANGEABLE
Spring,contact
Ward Leonard Ct Llc
5305-01-104-10510102571 INTERCHANGEABLE
Setscrew
Caterpillar Inc Div Caterpillar Defense
5950-01-157-772410-2571 INTERCHANGEABLE
Reactor
Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc
5330-01-207-0277102571 INTERCHANGEABLE
Gasket
Ohio Medical Corporation Dba Ohio Medical Corp Ltd U.k
1005-01-566-0543 INTERCHANGEABLE
Receiver,small Arms
Cross-Reference Index
Part NumberManufacturer
5013522 Naval Sea Systems Command (USA)
10257-1 PRIMARY Alliant Techsystems Operations Llc Div Defense Electronic Systems (USA)
602-39 Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect Rf Corporation (USA)
Related Parts
4730-00-037-4903INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
102-571
5305-00-071-3580INTERCHANGEABLE
SETSCREW
89-975D
5330-00-291-2349INTERCHANGEABLE
SEAL,PLAIN ENCASED
60239
5320-00-501-3522INTERCHANGEABLE
RIVET,SOLID
5013522
4820-00-699-1550INTERCHANGEABLE
VALVE,SAFETY RELIEF
102571
5360-00-915-5230INTERCHANGEABLE
SPRING,CONTACT
102-57-1
5305-01-104-1051INTERCHANGEABLE
SETSCREW
0102571
5950-01-157-7724INTERCHANGEABLE
REACTOR
10-2571
5330-01-207-0277INTERCHANGEABLE
GASKET
102571
1005-01-566-0543INTERCHANGEABLE
RECEIVER,SMALL ARMS

Frequently Asked Questions

What is NSN 5935-00-371-9378?

NSN 5935-00-371-9378 is a Polarizing Key,electrical Connec, manufactured by Alliant Techsystems Operations Llc Div Defense Electronic Systems, classified under FSC 5935 (No Item Name Available). Status: active.

What are the part numbers for NSN 5935-00-371-9378?

NSN 5935-00-371-9378 has 3 cross-referenced part numbers: 5013522 (Naval Sea Systems Command), 10257-1 (Alliant Techsystems Operations Llc Div Defense Electronic Systems), 602-39 (Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect Rf Corporation).

What NSN replaces 5935-00-371-9378?

There are 10 known substitutes for 5935-00-371-9378: 4730-00-037-4903, 5305-00-071-3580, 5330-00-291-2349 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 10257-1?

Key specifications for 10257-1: Shape: IRREGULAR; Material: PLASTIC NYLON; Overall Length: 0.150 INCHES NOMINAL IN; Overall Height: 0.280 INCHES NOMINAL IN. 5 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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