PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-517Switch,pressure

Hamilton Sundstrand Corporation · NSN 5930-00-704-9786 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-704-9786 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-704-9786. Primary manufacturer part number: 21-517.
Features
  • Switch,pressure — FSC 5930
  • Overall Diameter: 1.296 INCHES MINIMUM AND 1.328 INCHES MAXIMUM IN
  • Operating Temp Rating: -65.0 FAHRENHEIT MINIMUM AND 250.0 FAHRENHEIT MAXIMUM DEGF
  • Style Designator: CYLINDRICAL
  • Media for Which Designed: GAS
  • Contact Action Stimulus: INCREASE
  • Body Length: 1.660 INCHES MINIMUM AND 1.790 INCHES MAXIMUM IN
  • Contact Voltage Rating in Volts: 28.0 DC AT SEA LEVEL SINGLE VOLTAGE
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,pressure, cataloged under National Stock Number 5930-00-704-9786, 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 Hamilton Sundstrand Corporation. Government technical data includes 24 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-00-704-9786
Primary Part Number21-517
Item NameSwitch,pressure
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation
StatusACTIVE
Overall Diameter1.296 INCHES MINIMUM AND 1.328 INCHES MAXIMUM IN
Operating Temp Rating-65.0 FAHRENHEIT MINIMUM AND 250.0 FAHRENHEIT MAXIMUM DEGF
Style DesignatorCYLINDRICAL
Media for Which DesignedGAS
Contact Action StimulusINCREASE
Body Length1.660 INCHES MINIMUM AND 1.790 INCHES MAXIMUM IN
Contact Voltage Rating in Volts28.0 DC AT SEA LEVEL SINGLE VOLTAGE
Distance Between Mounting Facility Centers0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
Proof Pressure80.00 POUNDS PER SQUARE INCH GAGE LBS
Thread Quantity Per Inch40 ALL PRESSURE CONNECTION
Mounting Facility PatternTWO POSITION IN-LINE
Mounting MethodTHREADED STUD(S)
Contact Load Current Rating1.0 AMPERES INDUCTIVE LOAD SINGLE VOLTAGE
Nonpile-Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Contact AdjustabilityACTUATION POINT NOT ADJUSTABLE AND DEACTUATION POINT NOT ADJUSTABLE
Pressure Connector TypeFLARED, THREADED EXTERNAL ALL CONNECTIONS
Thread Class2A ALL PRESSURE CONNECTION A
Terminal TypeWIRE LOOP
Thread Length0.310 INCHES MINIMUM AND 0.380 INCHES MAXIMUM ALL PRESSURE CONNECTION IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) ALL PRESSURE CONNECTION
Pressure Switch TypeDIFFERENTIAL
Outside Diameter0.112 INCHES NOMINAL ALL CONNECTIONS IN
Nominal Thread Size0.112 INCHES ALL PRESSURE CONNECTION IN
Contact Stimulus Rating5.50 ACTUATION POINT NOMINAL POUNDS PER SQUARE INCH AND 1.50 DEACTUATION POINT NOMINAL POUNDS PER SQUARE INCH
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
9540-00-355-9508 INTERCHANGEABLE
Angle,structural
5977-00-577-8152C42800-2L12 INTERCHANGEABLE
Brush,electrical Contact
Continental Electric Motors, Inc.
6140-01-047-42722151-507 INTERCHANGEABLE
Battery,storage
Specialty Lighting, Inc Div Specialty Lighting
9540-01-071-3498 INTERCHANGEABLE
Angle,structural
8010-01-700-0883215-17 SATURN YELLOW INTERCHANGEABLE
Coating Compound,fluorescent
Day-Glo Color Corp.
Cross-Reference Index
Part NumberManufacturer
C2021-1 Bristol Babcock Inc Instruments-Systems Div Sub of Babcock Intl Inc (USA)
506201-02-3 Bristol, Inc. Dba Remote Automation Solutions Div Remote Automation Solutions (USA)
506201-02-3 Bristol Babcock Inc Instruments-Systems Div Sub of Babcock Intl Inc (USA)
92D3 Custom Control Sensors, Llc (USA)
21-517 PRIMARY Hamilton Sundstrand Corporation (USA)
Related Parts
9540-00-355-9508INTERCHANGEABLE
ANGLE,STRUCTURAL
5977-00-577-8152INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
C42800-2L12
6140-01-047-4272INTERCHANGEABLE
BATTERY,STORAGE
2151-507
9540-01-071-3498INTERCHANGEABLE
ANGLE,STRUCTURAL
8010-01-700-0883INTERCHANGEABLE
COATING COMPOUND,FLUORESCENT
215-17 SATURN YELLOW

Frequently Asked Questions

What is NSN 5930-00-704-9786?

NSN 5930-00-704-9786 is a Switch,pressure, manufactured by Hamilton Sundstrand Corporation, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-00-704-9786?

NSN 5930-00-704-9786 has 5 cross-referenced part numbers: C2021-1 (Bristol Babcock Inc Instruments-Systems Div Sub of Babcock Intl Inc), 506201-02-3 (Bristol, Inc. Dba Remote Automation Solutions Div Remote Automation Solutions), 506201-02-3 (Bristol Babcock Inc Instruments-Systems Div Sub of Babcock Intl Inc), 92D3 (Custom Control Sensors, Llc), 21-517 (Hamilton Sundstrand Corporation).

What NSN replaces 5930-00-704-9786?

There are 5 known substitutes for 5930-00-704-9786: 9540-00-355-9508, 5977-00-577-8152, 6140-01-047-4272 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-517?

Key specifications for 21-517: Overall Diameter: 1.296 INCHES MINIMUM AND 1.328 INCHES MAXIMUM IN; Operating Temp Rating: -65.0 FAHRENHEIT MINIMUM AND 250.0 FAHRENHEIT MAXIMUM DEGF; Style Designator: CYLINDRICAL; Media for Which Designed: GAS. 25 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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