PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42921Switch,pressure

Setra Systems, Inc. Dba Gems Sensors · NSN 5930-01-029-3872 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-01-029-3872 — this item is cataloged by the U.S. Government under National Stock Number 5930-01-029-3872. Primary manufacturer part number: 42921.
Features
  • Switch,pressure — FSC 5930
  • Contact Load Current Rating: 500.0 MILLIAMPERES RESISTIVE LOAD SINGLE VOLTAGE
  • Contact Adjustment Range: +0.20 TO 15.00 ACTUATION POINT GALLONS PER MINUTE AND +0.20 TO 15.00 DEACTUATION POINT GALLONS PER MINUTE
  • Operating Temp Rating: -40.0 FAHRENHEIT MINIMUM AND 185.0 FAHRENHEIT MAXIMUM DEGF
  • Nominal Thread Size: 0.500 INCHES SINGLE PRESSURE CONNECTION IN
  • Pressure Switch Type: GAGE
  • Contact Adjustment Type: EXTERNAL DEACTUATION POINT SCREW AND EXTERNAL ACTUATION POINT SCREW
  • Nonpile-Up Contact Arrangement: 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,pressure, cataloged under National Stock Number 5930-01-029-3872, 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 Setra Systems, Inc. Dba Gems Sensors. Government technical data includes 21 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-01-029-3872
Primary Part Number42921
Item NameSwitch,pressure
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerSetra Systems, Inc. Dba Gems Sensors
StatusACTIVE
Contact Load Current Rating500.0 MILLIAMPERES RESISTIVE LOAD SINGLE VOLTAGE
Contact Adjustment Range+0.20 TO 15.00 ACTUATION POINT GALLONS PER MINUTE AND +0.20 TO 15.00 DEACTUATION POINT GALLONS PER MINUTE
Operating Temp Rating-40.0 FAHRENHEIT MINIMUM AND 185.0 FAHRENHEIT MAXIMUM DEGF
Nominal Thread Size0.500 INCHES SINGLE PRESSURE CONNECTION IN
Pressure Switch TypeGAGE
Contact Adjustment TypeEXTERNAL DEACTUATION POINT SCREW AND EXTERNAL ACTUATION POINT SCREW
Nonpile-Up Contact Arrangement1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Contact Voltage Rating in Volts250.0 AC AT SEA LEVEL SINGLE VOLTAGE
Terminal TypeWIRE LEAD
Pressure Connector TypePLAIN, THREADED INTERNAL ALL CONNECTIONS
Sensing Element Burst Pressure5000.00 POUNDS PER SQUARE INCH GAGE LBS
Contact AdjustabilityDEACTUATION POINT ADJUSTABLE AND ACTUATION POINT ADJUSTABLE
Inside Diameter0.500 INCHES NOMINAL ALL CONNECTIONS IN
Style DesignatorRECTANGULAR
Media for Which DesignedLIQUID
Mounting MethodINLET CONNECTION AND OUTLET CONNECTION
Proof Pressure2500.00 POUNDS PER SQUARE INCH GAGE LBS
Contact Action StimulusINCREASE
Thread Quantity Per Inch14 ALL PRESSURE CONNECTION
Thread Series DesignatorNPT ALL PRESSURE CONNECTION
Body Length4.130 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5995-00-993-755042921 INTERCHANGEABLE
Cable Assembly,power,electrical
Unison Industries Llc
2530-01-284-54627807397 INTERCHANGEABLE
Shaft,steering Column
General Motors Llc Dba General Motors Llc
2940-01-327-019942921 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
5120-01-398-936100942921000 INTERCHANGEABLE
Wrench,box and Open End,combinat
Sears, Roebuck and Co. Dba Sears Div Sears Commercial
Cross-Reference Index
Part NumberManufacturer
3012457-2 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
3012457-2 Raytheon Company Div Rmd Strategic (USA)
42921 PRIMARY Setra Systems, Inc. Dba Gems Sensors (USA)
Related Parts
5995-00-993-7550INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
42921
2530-01-284-5462INTERCHANGEABLE
SHAFT,STEERING COLUMN
7807397
2940-01-327-0199INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42921
5120-01-398-9361INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT
00942921000

Frequently Asked Questions

What is NSN 5930-01-029-3872?

NSN 5930-01-029-3872 is a Switch,pressure, manufactured by Setra Systems, Inc. Dba Gems Sensors, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-01-029-3872?

NSN 5930-01-029-3872 has 3 cross-referenced part numbers: 3012457-2 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 3012457-2 (Raytheon Company Div Rmd Strategic), 42921 (Setra Systems, Inc. Dba Gems Sensors).

What NSN replaces 5930-01-029-3872?

There are 4 known substitutes for 5930-01-029-3872: 5995-00-993-7550, 2530-01-284-5462, 2940-01-327-0199 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 42921?

Key specifications for 42921: Overall Length: 4.130 INCHES NOMINAL IN; Overall Height: 2.000 INCHES NOMINAL IN; Contact Load Current Rating: 500.0 MILLIAMPERES RESISTIVE LOAD SINGLE VOLTAGE; Contact Adjustment Range: +0.20 TO 15.00 ACTUATION POINT GALLONS PER MINUTE AND +0.20 TO 15.00 DEACTUATION POINT GALLONS PER MINUTE. 24 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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