PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

82121Gage,pressure,dial Indicating

Maxima Technologies & Systems Llc Dba Maxima Technologies/steward-Warner · NSN 6620-01-100-3181 · FSC 6620 · No Item Name Available
Verified by PartsTable
NSN 6620-01-100-3181 — this item is cataloged by the U.S. Government under National Stock Number 6620-01-100-3181. Primary manufacturer part number: 82121.
Features
  • Gage,pressure,dial Indicating — FSC 6620
  • Overall Diameter: 2.145 INCHES NOMINAL IN
  • Material: GLASS PROTECTIVE CRYSTAL
  • Material: COPPER ALLOY ACTUATING ELEMENT
  • FSC Application Data: ENEINE INSTRUMENT,SMALL BOAT
  • Material: STEEL CASE
  • Bolt Circle Diameter: 2.000 INCHES NOMINAL IN
  • Actuation Type: SINGLE BOURDON TUBE
Applications
  • Applications requiring Glass Protective Crystal construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6620-01-100-3181, is classified within Federal Supply Class 6620 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Maxima Technologies & Systems Llc Dba Maxima Technologies/steward-Warner. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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
NSN6620-01-100-3181
Primary Part Number82121
Item NameGage,pressure,dial Indicating
FSC / FSG6620 / 66 — No Item Name Available
ManufacturerMaxima Technologies & Systems Llc Dba Maxima Technologies/steward-Warner
StatusCANCELLED
Overall Diameter2.145 INCHES NOMINAL IN
MaterialGLASS PROTECTIVE CRYSTAL
MaterialCOPPER ALLOY ACTUATING ELEMENT
FSC Application DataENEINE INSTRUMENT,SMALL BOAT
MaterialSTEEL CASE
Bolt Circle Diameter2.000 INCHES NOMINAL IN
Actuation TypeSINGLE BOURDON TUBE
Scale TypeSINGLE
Graduation Unit25.0 POUNDS LBS
Illuminative MethodINCANDESCENT LAMP
Connection LocationBACK
Connection TypeINTERNAL
Dial Size1-7/8 IN DIA IN
Pointer ColorWHITE
Scale Inscription/background ColorWHITE FIGURES ON BLACK BACKGROUND,MAJOR GRADUATIONS WHITE ON BLACK BACKGROUND,MINOR GRADUATIONS WHITE ON BLACK BACKGROUND
Mounting MethodFLUSH PANEL
Connector Type VentNOT PROVIDED
Scale Range+0.0 TO 400.0 POUNDS PRESSURE PER SQUARE INCH LBS
Pointer TypeINDICATING
Connection Size0.250 IN DIA IN
Scale Smallest Increment1.0 POUNDS LBS
Mounting Hole Diameter0.138 INCHES NOMINAL IN
Unable to DecodeUNABLE TO DECODE
Connection Quantity1
Scale NameOIL PRESSURE
Scale Accuracy1 PCT ENTIRE RANGE
AdjustabilityNONADJUSTABLE
Mounting Hole Quantity1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5340-00-072-0303101868 INTERCHANGEABLE
Standoff,threaded,spacing
Bull SAS
5330-00-942-3148101868 INTERCHANGEABLE
Gasket
Astronautics Corporation of America
4720-01-011-458926513 INTERCHANGEABLE
Hose,preformed
Gates Corporation
2910-01-046-8554101868 INTERCHANGEABLE
Nozzle,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
2815-01-114-193850109800 INTERCHANGEABLE
Ring,piston
Hatz Diesel of America Inc
5975-01-115-58978212-1 INTERCHANGEABLE
Conduit,metal,flexible
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
1650-01-173-53198212-1 INTERCHANGEABLE
Piston,outer,valve Assembly
Goodrich Aerospace Canada Ltd
5950-01-302-8998101868 INTERCHANGEABLE
Transformer,power
Dbp Microwave Inc. Dba Dbp Microwave Inc.
5360-01-358-791082121 INTERCHANGEABLE
Spring,helical,compression
Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
5310-01-394-7905101868 INTERCHANGEABLE
Washer,lock
Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am
Cross-Reference Index
Part NumberManufacturer
8229000 Clark Brothers Instrument Co (USA)
82121 Stewart-Warner Corporation (USA)
82121 PRIMARY Maxima Technologies & Systems Llc Dba Maxima Technologies/steward-Warner (USA)
101868 Maxima Technologies & Systems Llc (USA)
D-360-EK Stewart-Warner Corporation (USA)
82290000 Clark Brothers Instrument Co (USA)
Related Parts
5340-00-072-0303INTERCHANGEABLE
STANDOFF,THREADED,SPACING
101868
5330-00-942-3148INTERCHANGEABLE
GASKET
101868
4720-01-011-4589INTERCHANGEABLE
HOSE,PREFORMED
26513
2910-01-046-8554INTERCHANGEABLE
NOZZLE,VALVE
101868
2815-01-114-1938INTERCHANGEABLE
RING,PISTON
50109800
5975-01-115-5897INTERCHANGEABLE
CONDUIT,METAL,FLEXIBLE
8212-1
1650-01-173-5319INTERCHANGEABLE
PISTON,OUTER,VALVE ASSEMBLY
8212-1
5950-01-302-8998INTERCHANGEABLE
TRANSFORMER,POWER
101868
5360-01-358-7910INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
82121
5310-01-394-7905INTERCHANGEABLE
WASHER,LOCK
101868
5325-01-461-3239INTERCHANGEABLE
RING,RETAINING
6685-01-591-6207INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
82121

Frequently Asked Questions

What is NSN 6620-01-100-3181?

NSN 6620-01-100-3181 is a Gage,pressure,dial Indicating, manufactured by Maxima Technologies & Systems Llc Dba Maxima Technologies/steward-Warner, classified under FSC 6620 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6620-01-100-3181?

NSN 6620-01-100-3181 has 6 cross-referenced part numbers: 8229000 (Clark Brothers Instrument Co), 82121 (Stewart-Warner Corporation), 82121 (Maxima Technologies & Systems Llc Dba Maxima Technologies/steward-Warner), 101868 (Maxima Technologies & Systems Llc), D-360-EK (Stewart-Warner Corporation) and 1 more.

What NSN replaces 6620-01-100-3181?

There are 12 known substitutes for 6620-01-100-3181: 5340-00-072-0303, 5330-00-942-3148, 4720-01-011-4589 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 82121?

Key specifications for 82121: Overall Diameter: 2.145 INCHES NOMINAL IN; Material: GLASS PROTECTIVE CRYSTAL; Material: COPPER ALLOY ACTUATING ELEMENT; FSC Application Data: ENEINE INSTRUMENT,SMALL BOAT. 29 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6620-01-100-3181 still in active supply?

NSN 6620-01-100-3181 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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