PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

340A3960Switch,rotary

General Dynamics Mission Systems, Inc. Dba Gdms · NSN 5930-00-583-5258 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-583-5258 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-583-5258. Primary manufacturer part number: 340A3960.
Features
  • Switch,rotary — FSC 5930
  • Mounting Method: THREADED BUSHING SINGLE MOUNTING FACILITY
  • Thread Length: 0.375 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Individual Section Quantity: 1
  • Contact Switching Action: MAKES BEFORE BREAKS SINGLE SECTION REAR
  • Switch Contact Basic Design: NONPILE-UP NONSYMMETRICAL
  • Terminal Type: TAB, SOLDER LUG
  • Shaft Type: ROUND, FLATTED SINGLE ACTUATOR
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,rotary, cataloged under National Stock Number 5930-00-583-5258, is classified within Federal Supply Class 5930 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is General Dynamics Mission Systems, Inc. Dba Gdms. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5930-00-583-5258
Primary Part Number340A3960
Item NameSwitch,rotary
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerGeneral Dynamics Mission Systems, Inc. Dba Gdms
StatusCANCELLED
Mounting MethodTHREADED BUSHING SINGLE MOUNTING FACILITY
Thread Length0.375 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Individual Section Quantity1
Contact Switching ActionMAKES BEFORE BREAKS SINGLE SECTION REAR
Switch Contact Basic DesignNONPILE-UP NONSYMMETRICAL
Terminal TypeTAB, SOLDER LUG
Shaft TypeROUND, FLATTED SINGLE ACTUATOR
Nominal Thread Size0.375 INCHES SINGLE MOUNTING FACILITY IN
Switch Actuator Positioning Increment30.0 DEGREES SINGLE ACTUATOR
First Flat Length0.469 INCHES NOMINAL SINGLE ACTUATOR IN
Shaft Length0.906 INCHES NOMINAL SINGLE ACTUATOR IN
Flat Height0.218 INCHES NOMINAL SINGLE ACTUATOR IN
Shaft Diameter0.250 INCHES NOMINAL SINGLE ACTUATOR IN
Thread Series DesignatorUNEF SINGLE MOUNTING FACILITY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
6220-00-185-067655340 INTERCHANGEABLE
Directional Light,vehicular
Grote Industries Inc Dba Grote Manufacturing Co Div Military Products
5945-00-258-27932Z7585-116 INTERCHANGEABLE
Relay,electromagnetic
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5330-00-285-5824 INTERCHANGEABLE
Seal,plain Encased
2915-01-711-060755340 INTERCHANGEABLE
Bowl,sediment
Williams International Co., L.l.c.
5995-01-729-300255340 INTERCHANGEABLE
Cable Assembly and Reel
Logos Imaging Llc
Cross-Reference Index
Part NumberManufacturer
55340TYPE23A Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA)
55340 Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA)
259-0550-00 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
340A3960 PRIMARY General Dynamics Mission Systems, Inc. Dba Gdms (USA)
SMB179030 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
5-11148-218 Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA)
340A3960 Motorola Inc. Dba Integrated Information Systems Group (USA)
155340-23 Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA)
Related Parts
6220-00-185-0676INTERCHANGEABLE
DIRECTIONAL LIGHT,VEHICULAR
55340
5945-00-258-2793INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
2Z7585-116
5330-00-285-5824INTERCHANGEABLE
SEAL,PLAIN ENCASED
2915-01-711-0607INTERCHANGEABLE
BOWL,SEDIMENT
55340
5995-01-729-3002INTERCHANGEABLE
CABLE ASSEMBLY AND REEL
55340

Frequently Asked Questions

What is NSN 5930-00-583-5258?

NSN 5930-00-583-5258 is a Switch,rotary, manufactured by General Dynamics Mission Systems, Inc. Dba Gdms, classified under FSC 5930 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5930-00-583-5258?

NSN 5930-00-583-5258 has 8 cross-referenced part numbers: 55340TYPE23A (Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch), 55340 (Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch), 259-0550-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 340A3960 (General Dynamics Mission Systems, Inc. Dba Gdms), SMB179030 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir) and 3 more.

What NSN replaces 5930-00-583-5258?

There are 5 known substitutes for 5930-00-583-5258: 6220-00-185-0676, 5945-00-258-2793, 5330-00-285-5824 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 340A3960?

Key specifications for 340A3960: Mounting Method: THREADED BUSHING SINGLE MOUNTING FACILITY; Thread Length: 0.375 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Individual Section Quantity: 1; Contact Switching Action: MAKES BEFORE BREAKS SINGLE SECTION REAR. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5930-00-583-5258 still in active supply?

NSN 5930-00-583-5258 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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