PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55021-2Switch,rotary

Arma Div Ambac Industries Inc · NSN 5930-00-548-8626 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-548-8626 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-548-8626. Primary manufacturer part number: 55021-2.
Features
  • Switch,rotary — FSC 5930
  • Unthreaded Mounting Hole Diameter: 0.203 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Mounting Facility Pattern: TWO POSITION IN-LINE SINGLE MOUNTING FACILITY
  • Overall Diameter: 1.750 INCHES NOMINAL IN
  • Shaft Diameter: 0.219 INCHES NOMINAL SINGLE ACTUATOR IN
  • Contact Voltage Rating in Volts: 120.0 LOWEST AC VOLTAGE RATING AT SEA LEVEL
  • Longest Horizontal Distance Between Mounting Centers: 1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Switch Actuator Indexing Position Quantity: 4 SINGLE ACTUATOR
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,rotary, cataloged under National Stock Number 5930-00-548-8626, 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 Arma Div Ambac Industries Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-00-548-8626
Primary Part Number55021-2
Item NameSwitch,rotary
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerArma Div Ambac Industries Inc
StatusACTIVE
Unthreaded Mounting Hole Diameter0.203 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility PatternTWO POSITION IN-LINE SINGLE MOUNTING FACILITY
Overall Diameter1.750 INCHES NOMINAL IN
Shaft Diameter0.219 INCHES NOMINAL SINGLE ACTUATOR IN
Contact Voltage Rating in Volts120.0 LOWEST AC VOLTAGE RATING AT SEA LEVEL
Longest Horizontal Distance Between Mounting Centers1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Switch Actuator Indexing Position Quantity4 SINGLE ACTUATOR
Shaft TypeROUND SINGLE ACTUATOR
Switch Contact Basic DesignNONPILE-UP SYMMETRICAL
Terminal TypeTAB W/SCREW
Shaft Length1.000 INCHES NOMINAL SINGLE ACTUATOR IN
Contact Switching ActionBREAKS BEFORE MAKES EACH SECTION FRONT
Mounting MethodBASE SINGLE MOUNTING FACILITY
Switch Actuator Positioning Increment90.0 DEGREES SINGLE ACTUATOR
Individual Section Quantity6
Contact Voltage Rating in Volts240.0 HIGHEST AC VOLTAGE RATING AT SEA LEVEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5905-00-088-0635 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
3110-00-100-03562525 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
9540-00-422-1781 INTERCHANGEABLE
Angle,structural
5998-00-985-0944 INTERCHANGEABLE
Circuit Card Assembly
3020-01-034-1357D2-1015 INTERCHANGEABLE
Gear,helical
Roper Industries Inc Roper Pump Co Div
5220-01-259-1638STST72X96X12 INTERCHANGEABLE
Plate,surface
Martin Inc Dba Martin Incorporated, an Alabama Co Div Martin Incorporated
4730-01-551-60085502-12 INTERCHANGEABLE
Elbow,pipe
Tompkins Industries Inc
5310-01-587-113080-837 INTERCHANGEABLE
Washer,concave
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
Cross-Reference Index
Part NumberManufacturer
55021-2 Arma Div Ambac Industries Inc
80837 Cooper Industries Inc Cooper Distribution Equipment Div (USA)
D-206-587 Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp (USA)
D21015 Litton Systems Inc Itek Optical Systems Div (USA)
979-1D613 Gap Instrument Corp (USA)
979-1D613 Advanced Logic Resources Inc Dba Alr (USA)
Related Parts
5905-00-088-0635INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
3110-00-100-0356INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
2525
9540-00-422-1781INTERCHANGEABLE
ANGLE,STRUCTURAL
5998-00-985-0944INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
3020-01-034-1357INTERCHANGEABLE
GEAR,HELICAL
D2-1015
5220-01-259-1638INTERCHANGEABLE
PLATE,SURFACE
STST72X96X12
4730-01-551-6008INTERCHANGEABLE
ELBOW,PIPE
5502-12
5310-01-587-1130INTERCHANGEABLE
WASHER,CONCAVE
80-837

Frequently Asked Questions

What is NSN 5930-00-548-8626?

NSN 5930-00-548-8626 is a Switch,rotary, manufactured by Arma Div Ambac Industries Inc, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-00-548-8626?

NSN 5930-00-548-8626 has 6 cross-referenced part numbers: 55021-2 (Arma Div Ambac Industries Inc), 80837 (Cooper Industries Inc Cooper Distribution Equipment Div), D-206-587 (Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp), D21015 (Litton Systems Inc Itek Optical Systems Div), 979-1D613 (Gap Instrument Corp) and 1 more.

What NSN replaces 5930-00-548-8626?

There are 8 known substitutes for 5930-00-548-8626: 5905-00-088-0635, 3110-00-100-0356, 9540-00-422-1781 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 55021-2?

Key specifications for 55021-2: Unthreaded Mounting Hole Diameter: 0.203 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Mounting Facility Pattern: TWO POSITION IN-LINE SINGLE MOUNTING FACILITY; Overall Diameter: 1.750 INCHES NOMINAL IN; Shaft Diameter: 0.219 INCHES NOMINAL SINGLE ACTUATOR IN. 16 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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