PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AW1821AC02Gage,differential,dial Indicatin

Ametek, Inc. Div Aerospace & Defense · NSN 6685-00-810-6047 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-810-6047 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-810-6047. Primary manufacturer part number: AW1821AC02.
Features
  • Gage,differential,dial Indicatin — FSC 6685
  • Material: COPPER ALLOY ACTUATING ELEMENT
  • Scale Smallest Increment: 1.000 INCHES IN
  • Unable to Decode: UNABLE TO DECODE
  • Connection Location: BACK
  • Material: PLASTIC CASE
  • Surface Treatment: OXIDE CASE
  • Scale Type: SINGLE
Applications
  • Applications requiring Copper Alloy Actuating Element construction
General Description

The Gage,differential,dial Indicatin, cataloged under National Stock Number 6685-00-810-6047, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ametek, Inc. Div Aerospace & Defense. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 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
NSN6685-00-810-6047
Primary Part NumberAW1821AC02
Item NameGage,differential,dial Indicatin
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAmetek, Inc. Div Aerospace & Defense
StatusCANCELLED
MaterialCOPPER ALLOY ACTUATING ELEMENT
Scale Smallest Increment1.000 INCHES IN
Unable to DecodeUNABLE TO DECODE
Connection LocationBACK
MaterialPLASTIC CASE
Surface TreatmentOXIDE CASE
Scale TypeSINGLE
Scale Accuracy.02 IN. HG FROM 15 TO 16.5 IN. HG AND .5 IN. HG REMAINDER IN
Connection Quantity1
Pointer TypeINDICATING
Pointer MarkingFLUORESCENT TIP
Scale Inscription/background ColorFLUORESCENT FIGURES ON BLACK
AdjustabilityNONADJUSTABLE
MaterialGLASS PROTECTIVE CRYSTAL
Connector Type VentNOT PROVIDED
Pointer ColorBLACK
Graduation Unit5.00 INCHES IN
Actuation TypeDIAPHRAGM
Connection Size0.125 IN. NPT IN
Mounting MethodFLUSH PANEL
Scale Range-2.000 TO 25.000 INCHES OF MERCURY IN
Dial Size1.875 IN. DIA IN
Connection TypeINTERNAL
Scale NameDIFFERENTIAL PRESSURE
Overall Diameter2.375 INCHES NOMINAL IN
Bolt Circle Diameter2.625 INCHES NOMINAL IN
Mounting Hole Quantity4
Mounting Hole Diameter0.165 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5940-00-502-294910-301-4 INTERCHANGEABLE
Terminal,stud
Concord Electronics, Inc.
3110-00-554-3197 INTERCHANGEABLE
Bearing,ball,annular
4820-01-052-24492027401S0030 INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-052-24502027401S0181 INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
5962-01-170-2339CD4028BF INTERCHANGEABLE
Microcircuit,digital
Renesas Electronics America Inc
4820-01-193-7669 INTERCHANGEABLE
Valve,angle
4820-01-215-146520274P51M INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-217-8599 INTERCHANGEABLE
Valve,safety Relief
4820-01-318-283520274 ITEM 20274E51M INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-373-640620274G51M INTERCHANGEABLE
Valve,relief,pressure and Temper
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Cross-Reference Index
Part NumberManufacturer
6685PL0826130 Jednolity Indeks Materialowy - Uniform Material Index (POL)
AW1821AC02 PRIMARY Ametek, Inc. Div Aerospace & Defense (USA)
10400G01P00 Ametek, Inc. Div Aerospace & Defense (USA)
2027-4-061 Elbitamerica, Inc. (USA)
6685PL2070138 Jednolity Indeks Materialowy - Uniform Material Index (POL)
AW1 7-8 21A0F341 Ametek, Inc. Div Aerospace & Defense (USA)
2027-4 Elbitamerica, Inc. (USA)
695383-1 Lockheed Martin Corp (USA)
Related Parts
5940-00-502-2949INTERCHANGEABLE
TERMINAL,STUD
10-301-4
3110-00-554-3197INTERCHANGEABLE
BEARING,BALL,ANNULAR
4820-01-052-2449INTERCHANGEABLE
VALVE,SAFETY RELIEF
2027401S0030
4820-01-052-2450INTERCHANGEABLE
VALVE,SAFETY RELIEF
2027401S0181
5962-01-170-2339INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
CD4028BF
4820-01-193-7669INTERCHANGEABLE
VALVE,ANGLE
4820-01-215-1465INTERCHANGEABLE
VALVE,SAFETY RELIEF
20274P51M
4820-01-217-8599INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-01-318-2835INTERCHANGEABLE
VALVE,SAFETY RELIEF
20274 ITEM 20274E51M
4820-01-373-6406INTERCHANGEABLE
VALVE,RELIEF,PRESSURE AND TEMPER
20274G51M
4820-01-428-9878INTERCHANGEABLE
VALVE,SAFETY RELIEF
20274J51M(OXCLEA
6680-01-539-9238INTERCHANGEABLE
GLASS,LIQUID SIGHT INDICATOR,ROU
20274

Frequently Asked Questions

What is NSN 6685-00-810-6047?

NSN 6685-00-810-6047 is a Gage,differential,dial Indicatin, manufactured by Ametek, Inc. Div Aerospace & Defense, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-810-6047?

NSN 6685-00-810-6047 has 8 cross-referenced part numbers: 6685PL0826130 (Jednolity Indeks Materialowy - Uniform Material Index), AW1821AC02 (Ametek, Inc. Div Aerospace & Defense), 10400G01P00 (Ametek, Inc. Div Aerospace & Defense), 2027-4-061 (Elbitamerica, Inc.), 6685PL2070138 (Jednolity Indeks Materialowy - Uniform Material Index) and 3 more.

What NSN replaces 6685-00-810-6047?

There are 12 known substitutes for 6685-00-810-6047: 5940-00-502-2949, 3110-00-554-3197, 4820-01-052-2449 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AW1821AC02?

Key specifications for AW1821AC02: Material: COPPER ALLOY ACTUATING ELEMENT; Scale Smallest Increment: 1.000 INCHES IN; Unable to Decode: UNABLE TO DECODE; Connection Location: BACK. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-810-6047 still in active supply?

NSN 6685-00-810-6047 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.
PartsTable Design LLC · partstable.com