PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21SN04-139Switch,pressure

Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution · NSN 5930-01-047-8916 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-01-047-8916 — this item is cataloged by the U.S. Government under National Stock Number 5930-01-047-8916. Primary manufacturer part number: 21SN04-139.
Features
  • Switch,pressure — FSC 5930
  • Contact Adjustability: ACTUATION POINT ADJUSTABLE, PRESET
  • Overall Diameter: 2.000 INCHES NOMINAL IN
  • Nonpile-Up Contact Arrangement: 1 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED
  • Pressure Switch Type: ABSOLUTE
  • Contact Action Stimulus: INCREASE
  • Contact Stimulus Rating: 2.50 DEACTUATION POINT NOMINAL POUNDS PER SQUARE INCH
  • 5 verified cross-references
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,pressure, cataloged under National Stock Number 5930-01-047-8916, 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 Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-01-047-8916
Primary Part Number21SN04-139
Item NameSwitch,pressure
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerEaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution
StatusACTIVE
Contact AdjustabilityACTUATION POINT ADJUSTABLE, PRESET
Overall Diameter2.000 INCHES NOMINAL IN
Nonpile-Up Contact Arrangement1 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED
Pressure Switch TypeABSOLUTE
Contact Action StimulusINCREASE
Contact Stimulus Rating2.50 DEACTUATION POINT NOMINAL POUNDS PER SQUARE INCH
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
8030-00-015-1295 INTERCHANGEABLE
Antiseize Compound
5815-00-356-3490 INTERCHANGEABLE
Bracket
5962-00-497-3938351-7145-020 INTERCHANGEABLE
Microcircuit,digital
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5935-00-683-5082PC815300006-5 INTERCHANGEABLE
Connector,plug,electrical
Lockheed Martin Corporation Div Rotary and Mission Systems
4710-01-205-917251461 INTERCHANGEABLE
Tube,metallic
Nch Corporation Dba Nch Corp
4730-01-651-111951461 INTERCHANGEABLE
Coupling Half,quick Disconnect
Transdigm Inc Div Adelwiggins Group
Cross-Reference Index
Part NumberManufacturer
5930PL1610062 Jednolity Indeks Materialowy - Uniform Material Index (POL)
16VP030-1 Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA)
21SN04-139 PRIMARY Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution (USA)
5930PL1610046 Jednolity Indeks Materialowy - Uniform Material Index (POL)
5146-1 Spectrum Associates, Inc. (USA)
Related Parts
8030-00-015-1295INTERCHANGEABLE
ANTISEIZE COMPOUND
5815-00-356-3490INTERCHANGEABLE
BRACKET
5962-00-497-3938INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
351-7145-020
5935-00-683-5082INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
PC815300006-5
4710-01-205-9172INTERCHANGEABLE
TUBE,METALLIC
51461
4730-01-651-1119INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
51461

Frequently Asked Questions

What is NSN 5930-01-047-8916?

NSN 5930-01-047-8916 is a Switch,pressure, manufactured by Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-01-047-8916?

NSN 5930-01-047-8916 has 5 cross-referenced part numbers: 5930PL1610062 (Jednolity Indeks Materialowy - Uniform Material Index), 16VP030-1 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), 21SN04-139 (Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution), 5930PL1610046 (Jednolity Indeks Materialowy - Uniform Material Index), 5146-1 (Spectrum Associates, Inc.).

What NSN replaces 5930-01-047-8916?

There are 6 known substitutes for 5930-01-047-8916: 8030-00-015-1295, 5815-00-356-3490, 5962-00-497-3938 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21SN04-139?

Key specifications for 21SN04-139: Contact Adjustability: ACTUATION POINT ADJUSTABLE, PRESET; Overall Diameter: 2.000 INCHES NOMINAL IN; Nonpile-Up Contact Arrangement: 1 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED; Pressure Switch Type: ABSOLUTE. 7 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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