PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PM21678Switch,push

Mason Electric Co. Dba Mason Controls · NSN 5930-00-940-9133 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-940-9133 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-940-9133. Primary manufacturer part number: PM21678.
Features
  • Switch,push — FSC 5930
  • Thread Quantity Per Inch: 32
  • Terminal Type and Quantity: 2 TAB, SOLDER LUG
  • Thread Series Designator: UNEF
  • Nonpile-Up Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION SINGLE SWITCH UNIT
  • Actuator Height: 0.125 INCHES NOMINAL IN
  • Nominal Thread Size: 0.438 INCHES IN
  • Body Length: 0.438 INCHES NOMINAL IN
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,push, cataloged under National Stock Number 5930-00-940-9133, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5930-00-940-9133
Primary Part NumberPM21678
Item NameSwitch,push
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerMason Electric Co. Dba Mason Controls
StatusCANCELLED
Thread Quantity Per Inch32
Terminal Type and Quantity2 TAB, SOLDER LUG
Thread Series DesignatorUNEF
Nonpile-Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION SINGLE SWITCH UNIT
Actuator Height0.125 INCHES NOMINAL IN
Nominal Thread Size0.438 INCHES IN
Body Length0.438 INCHES NOMINAL IN
Inclosure TypeFULLY INCLOSED
Bushing Length0.188 INCHES NOMINAL IN
Body Diameter0.562 INCHES NOMINAL IN
Actuator Diameter0.438 INCHES NOMINAL IN
Thread Class2A A
Mounting MethodTHREADED BUSHING
Body StyleBUSHING MOUNTED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5315-00-003-410721678 INTERCHANGEABLE
Key,machine
Industrial Technologies and Services Llc
2995-00-022-513520395-1 INTERCHANGEABLE
Conduit,cable Overt
Triumph Controls, Llc Dba Triumph Controls, Llc
5930-00-078-357821730 INTERCHANGEABLE
Switch,thermostatic
Sensata Technologies, Inc. Div Sensata Attleboro
5841-00-090-393521730 INTERCHANGEABLE
Rod
Raytheon Company Dba Raytheon
5935-00-201-3099216-7-8 INTERCHANGEABLE
Strap Nut,plug-in Electronic Com
Kearfott Corporation Div Guidance and Navigation Division
4710-00-289-0651279573 INTERCHANGEABLE
Tube,metallic
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5970-00-310-8689M7415134SUB13PT12 INTERCHANGEABLE
Disk
Westinghouse Electric Corp
6610-00-544-555421678 INTERCHANGEABLE
Gear Assy
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
6610-00-918-338321730 INTERCHANGEABLE
Gear Assy
Aerosonic Llc
1650-00-952-381521730 INTERCHANGEABLE
Valve,regulating Flow
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
PM21678 Amphenol Corp Div Amphenol Aerospace Operations (USA)
21730 Amphenol Corp Div Amphenol Aerospace Operations (USA)
21678 Unison Industries Llc (USA)
21678 Amphenol Corp Div Amphenol Aerospace Operations (USA)
PM21678 PRIMARY Mason Electric Co. Dba Mason Controls (USA)
PM21678 Satair A/s (DNK)
PM21678 Unison Industries Llc (USA)
Related Parts
5315-00-003-4107INTERCHANGEABLE
KEY,MACHINE
21678
2995-00-022-5135INTERCHANGEABLE
CONDUIT,CABLE OVERT
20395-1
5930-00-078-3578INTERCHANGEABLE
SWITCH,THERMOSTATIC
21730
5841-00-090-3935INTERCHANGEABLE
ROD
21730
5935-00-201-3099INTERCHANGEABLE
STRAP NUT,PLUG-IN ELECTRONIC COM
216-7-8
4710-00-289-0651INTERCHANGEABLE
TUBE,METALLIC
279573
5970-00-310-8689INTERCHANGEABLE
DISK
M7415134SUB13PT12
6610-00-544-5554INTERCHANGEABLE
GEAR ASSY
21678
6610-00-918-3383INTERCHANGEABLE
GEAR ASSY
21730
1650-00-952-3815INTERCHANGEABLE
VALVE,REGULATING FLOW
21730
6550-01-231-7217INTERCHANGEABLE
CULTURE MEDIUM,GRAM NEGATIVE BRO
221730
5315-01-320-5367INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
21678

Frequently Asked Questions

What is NSN 5930-00-940-9133?

NSN 5930-00-940-9133 is a Switch,push, manufactured by Mason Electric Co. Dba Mason Controls, classified under FSC 5930 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5930-00-940-9133?

NSN 5930-00-940-9133 has 7 cross-referenced part numbers: PM21678 (Amphenol Corp Div Amphenol Aerospace Operations), 21730 (Amphenol Corp Div Amphenol Aerospace Operations), 21678 (Unison Industries Llc), 21678 (Amphenol Corp Div Amphenol Aerospace Operations), PM21678 (Mason Electric Co. Dba Mason Controls) and 2 more.

What NSN replaces 5930-00-940-9133?

There are 12 known substitutes for 5930-00-940-9133: 5315-00-003-4107, 2995-00-022-5135, 5930-00-078-3578 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of PM21678?

Key specifications for PM21678: Thread Quantity Per Inch: 32; Terminal Type and Quantity: 2 TAB, SOLDER LUG; Thread Series Designator: UNEF; Nonpile-Up Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION SINGLE SWITCH UNIT. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5930-00-940-9133 still in active supply?

NSN 5930-00-940-9133 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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