PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

505003Switch,lever

Mason Electric Co. Dba Mason Controls · NSN 5930-00-578-4265 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-578-4265 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-578-4265. Primary manufacturer part number: 505003.
Features
  • Switch,lever — FSC 5930
  • Body Style: HOLE MOUNTED
  • Thread Quantity Per Inch: 32
  • Actuator Style: ROUND
  • Pile-Up Contact Form Arrangement: 1A FIRST POSITION A
  • Mounting Method: THREADED HOLE(S)
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.580 INCHES MINIMUM AND 1.600 INCHES MAXIMUM IN
  • Body Height: 1.500 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,lever, cataloged under National Stock Number 5930-00-578-4265, 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 Mason Electric Co. Dba Mason Controls. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-00-578-4265
Primary Part Number505003
Item NameSwitch,lever
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerMason Electric Co. Dba Mason Controls
StatusACTIVE
Body StyleHOLE MOUNTED
Thread Quantity Per Inch32
Actuator StyleROUND
Pile-Up Contact Form Arrangement1A FIRST POSITION A
Mounting MethodTHREADED HOLE(S)
Center to Center Distance Between Mounting Facilities Parallel to Width1.580 INCHES MINIMUM AND 1.600 INCHES MAXIMUM IN
Body Height1.500 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN
Actuator Position-Action RelationshipUP POSITION MOMENTARY AND DOWN POSITION MOMENTARY
Contact Load Current Rating at Maximum Rated Voltage20.000 AMPERES RESISTIVE DC AND 10.000 AMPERES RESISTIVE AC
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Body Width2.219 INCHES MINIMUM AND 2.281 INCHES MAXIMUM IN
Inclosure TypeFULLY INCLOSED
Body Length2.312 INCHES MAXIMUM IN
Actuator Diameter0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
Terminal Type and Quantity4 SCREW
Pile-Up Contact Form Arrangement1A SECOND POSITION A
Actuator Height1.094 INCHES MINIMUM AND 1.156 INCHES MAXIMUM IN
Maximum Voltage Rating in Volts240.0 AC AND 30.0 DC
Nominal Thread Size0.138 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4140-00-120-1203505003 INTERCHANGEABLE
Blower Assy,centr
Rbc Transport Dynamics Corp Div Rbc Transport Dynamics
5330-00-194-3715 INTERCHANGEABLE
Packing,preformed
3030-00-204-3656BB68 INTERCHANGEABLE
Belt,v
Hbd Industries, Inc Div Hbd/thermoid Inc
6610-00-526-7849PH-500 INTERCHANGEABLE
Pitot Tube
Aero-Instruments Co., Llc Dba Aerocontrolex Group Div Aero Instruments Inc., Llc
5305-01-158-920910505820 INTERCHANGEABLE
Screw,machine
General Dynamics Land Systems Canadacorp
5915-01-178-57057810-2 INTERCHANGEABLE
Filter,radio Frequency Interfere
A. T. Parker, Inc. Div Solar Electronics Company
4220-01-237-3251505-055 INTERCHANGEABLE
Breech Ring,diver's Helmet
Kirby Morgan Dive Systems Inc
5950-01-281-049178-102 INTERCHANGEABLE
Transformer,pulse
Aladdin Industries Inc
5895-01-508-5433 INTERCHANGEABLE
Indicator Group
2920-01-651-1383 INTERCHANGEABLE
Terminal Block,electrical
Cross-Reference Index
Part NumberManufacturer
505003 PRIMARY Mason Electric Co. Dba Mason Controls (USA)
78102 L3harris Technologies, Inc Div Space & Airborne Systems (USA)
Related Parts
4140-00-120-1203INTERCHANGEABLE
BLOWER ASSY,CENTR
505003
5330-00-194-3715INTERCHANGEABLE
PACKING,PREFORMED
3030-00-204-3656INTERCHANGEABLE
BELT,V
BB68
6610-00-526-7849INTERCHANGEABLE
PITOT TUBE
PH-500
5305-01-158-9209INTERCHANGEABLE
SCREW,MACHINE
10505820
5915-01-178-5705INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
7810-2
4220-01-237-3251INTERCHANGEABLE
BREECH RING,DIVER'S HELMET
505-055
5950-01-281-0491INTERCHANGEABLE
TRANSFORMER,PULSE
78-102
5895-01-508-5433INTERCHANGEABLE
INDICATOR GROUP
2920-01-651-1383INTERCHANGEABLE
TERMINAL BLOCK,ELECTRICAL
4730-01-697-8330INTERCHANGEABLE
REDUCER,PIPE
78102

Frequently Asked Questions

What is NSN 5930-00-578-4265?

NSN 5930-00-578-4265 is a Switch,lever, manufactured by Mason Electric Co. Dba Mason Controls, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-00-578-4265?

NSN 5930-00-578-4265 has 2 cross-referenced part numbers: 505003 (Mason Electric Co. Dba Mason Controls), 78102 (L3harris Technologies, Inc Div Space & Airborne Systems).

What NSN replaces 5930-00-578-4265?

There are 11 known substitutes for 5930-00-578-4265: 4140-00-120-1203, 5330-00-194-3715, 3030-00-204-3656 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 505003?

Key specifications for 505003: Body Style: HOLE MOUNTED; Thread Quantity Per Inch: 32; Actuator Style: ROUND; Pile-Up Contact Form Arrangement: 1A FIRST POSITION A. 22 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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