PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B3221-16Switch,thermostatic

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple · NSN 5930-00-296-9258 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-296-9258 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-296-9258. Primary manufacturer part number: B3221-16.
Features
  • Switch,thermostatic — FSC 5930
  • Mounting Facility Pattern: TWO POSITION IN-LINE
  • Nonpile-Up Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
  • Terminal Type: WIRE LEAD
  • Distance Between Mounting Facility Centers: 0.500 INCHES NOMINAL IN
  • Contact Adjustability: DEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
  • Media for Which Designed: GAS
  • Contact Load Current Rating: 1.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,thermostatic, cataloged under National Stock Number 5930-00-296-9258, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-00-296-9258
Primary Part NumberB3221-16
Item NameSwitch,thermostatic
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
StatusACTIVE
Mounting Facility PatternTWO POSITION IN-LINE
Nonpile-Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Terminal TypeWIRE LEAD
Distance Between Mounting Facility Centers0.500 INCHES NOMINAL IN
Contact AdjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
Media for Which DesignedGAS
Contact Load Current Rating1.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Contact Voltage Rating in Volts115.0 AC AT SEA LEVEL SINGLE VOLTAGE
Style DesignatorRECTANGULAR
Contact Stimulus Rating20.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 15.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT
Mounting MethodWIRE LEAD TERMINAL(S) AND UNTHREADED HOLE(S)
Temp Sensing Element TypeINTERNAL SENSOR
Body Length0.438 INCHES MAXIMUM IN
Contact Action StimulusINCREASE
Unthreaded Mounting Hole Diameter0.125 INCHES NOMINAL IN
Features ProvidedHERMETICALLY SEALED CASE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-144-86690210591 INTERCHANGEABLE
Bearing,ball,annular
Agco Corp Parts Opn
5950-00-189-30981M130-1 INTERCHANGEABLE
Reactor
Northrop Grumman Corp Electronic Systems Defensive System Div
5930-00-359-3969 INTERCHANGEABLE
Switch,thermostatic
5950-00-390-567112512 INTERCHANGEABLE
Reactor
Stanford Applied Engineering Inc
5935-00-430-6321125-1-2 INTERCHANGEABLE
Connector,plug,electrical
Winchester Interconnect Corporation
5930-00-549-0358 INTERCHANGEABLE
Switch,thermostatic
5355-00-668-5791125-1-2 INTERCHANGEABLE
Knob
Raytheon Company Dba Raytheon Co
5325-00-679-8117SS250 INTERCHANGEABLE
Ring,retaining
Timken Aerospace, Inc Dba Torrington Product
5340-00-682-1935125 1-2 INTERCHANGEABLE
Snap Hook
Eastern Co Div Eberhard Manufacturing
4320-00-917-6506 INTERCHANGEABLE
Piston,pump
Cross-Reference Index
Part NumberManufacturer
12512 Essex Group Inc Controls Div Lexington Plant
B3221-16 Northrop Grumman Systems Corporation Div Es Defensive Systems Division (USA)
135-1214 Viking Technologies, Ltd. (USA)
B3221-16 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
B3221-16 Scomill Inc (USA)
Related Parts
3110-00-144-8669INTERCHANGEABLE
BEARING,BALL,ANNULAR
0210591
5950-00-189-3098INTERCHANGEABLE
REACTOR
1M130-1
5930-00-359-3969INTERCHANGEABLE
SWITCH,THERMOSTATIC
5950-00-390-5671INTERCHANGEABLE
REACTOR
12512
5935-00-430-6321INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
125-1-2
5930-00-549-0358INTERCHANGEABLE
SWITCH,THERMOSTATIC
5355-00-668-5791INTERCHANGEABLE
KNOB
125-1-2
5325-00-679-8117INTERCHANGEABLE
RING,RETAINING
SS250
5340-00-682-1935INTERCHANGEABLE
SNAP HOOK
125 1-2
4320-00-917-6506INTERCHANGEABLE
PISTON,PUMP
5330-01-042-2814INTERCHANGEABLE
SEAL,PLAIN ENCASED
13676
6515-01-105-4644INTERCHANGEABLE
BONE PLATE

Frequently Asked Questions

What is NSN 5930-00-296-9258?

NSN 5930-00-296-9258 is a Switch,thermostatic, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-00-296-9258?

NSN 5930-00-296-9258 has 5 cross-referenced part numbers: 12512 (Essex Group Inc Controls Div Lexington Plant), B3221-16 (Northrop Grumman Systems Corporation Div Es Defensive Systems Division), 135-1214 (Viking Technologies, Ltd.), B3221-16 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), B3221-16 (Scomill Inc).

What NSN replaces 5930-00-296-9258?

There are 12 known substitutes for 5930-00-296-9258: 3110-00-144-8669, 5950-00-189-3098, 5930-00-359-3969 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B3221-16?

Key specifications for B3221-16: Mounting Facility Pattern: TWO POSITION IN-LINE; Nonpile-Up Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION; Overall Height: 0.625 INCHES NOMINAL IN; Terminal Type: WIRE LEAD. 19 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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