PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

256011Gage,pressure,dial Indicating

Ametek, Inc. Div Aerospace & Defense · NSN 6685-00-531-2838 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-531-2838 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-531-2838. Primary manufacturer part number: 256011.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Overall Diameter: 2.710 INCHES NOMINAL IN
  • Material: COPPER ALLOY 511 ACTUATING ELEMENT
  • Color: BLACK CASE
  • Material: GLASS PROTECTIVE CRYSTAL
  • Surface Treatment: ENAMEL CASE
  • Scale Accuracy: PORM 2 PCT MIDDLE; 3 PCT REMAINDER
  • Connection Size: 0.250 IN. NPT DIA IN
Applications
  • Applications requiring Copper Alloy 511 Actuating Element construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-531-2838, 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 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-531-2838
Primary Part Number256011
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAmetek, Inc. Div Aerospace & Defense
StatusCANCELLED
Overall Diameter2.710 INCHES NOMINAL IN
MaterialCOPPER ALLOY 511 ACTUATING ELEMENT
ColorBLACK CASE
MaterialGLASS PROTECTIVE CRYSTAL
Surface TreatmentENAMEL CASE
Scale AccuracyPORM 2 PCT MIDDLE; 3 PCT REMAINDER
Connection Size0.250 IN. NPT DIA IN
Dial Size2-1/2 IN. DIA IN
Connection LocationLOWER
Mounting Connection LocationLOWER
Mounting MethodRIGID STEM
Scale NamePRESSURE
Graduation Unit40.0 POUNDS PER SQUARE INCH LBS
Scale Smallest Increment10.0 POUNDS PER SQUARE INCH (PSI) LBS
Pointer ColorBLACK
Actuation TypeSINGLE BOURDON TUBE
Scale Inscription/background ColorBLACK FIGURES,WHITE BACKGROUND
Scale TypeSINGLE
Pointer TypeINDICATING
MaterialSTEEL CASE
Connection TypeEXTERNAL
Connection Quantity1
AdjustabilityNONADJUSTABLE
Scale Range+0.0 TO 160.0 POUNDS PRESSURE PER SQUARE INCH LBS
Bezel TypeSLIPS-ON
Connector Type VentNOT PROVIDED
FSC Application DataGAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
6685-00-544-7984J5424 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
Bellofram Corporation
5945-00-557-29119062456 INTERCHANGEABLE
Relay,thermal
Us Army Aviation and Missile Command
5340-01-228-069725601-1 INTERCHANGEABLE
Cover,access
Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.
Cross-Reference Index
Part NumberManufacturer
6-1-1910-20-25A Eidal International Corporation (USA)
256011 PRIMARY Ametek, Inc. Div Aerospace & Defense (USA)
6-2-1910-20-25 W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center (USA)
555L-153250 Ametek, Inc. Div Aerospace & Defense (USA)
6-1-1910-20-25 W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center (USA)
75MP703 Hartford Compressors Inc (USA)
010838-P531 Ametek, Inc. Div Aerospace & Defense (USA)
Related Parts
6685-00-544-7984INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
J5424
5945-00-557-2911INTERCHANGEABLE
RELAY,THERMAL
9062456
5340-01-228-0697INTERCHANGEABLE
COVER,ACCESS
25601-1

Frequently Asked Questions

What is NSN 6685-00-531-2838?

NSN 6685-00-531-2838 is a Gage,pressure,dial Indicating, manufactured by Ametek, Inc. Div Aerospace & Defense, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-531-2838?

NSN 6685-00-531-2838 has 7 cross-referenced part numbers: 6-1-1910-20-25A (Eidal International Corporation), 256011 (Ametek, Inc. Div Aerospace & Defense), 6-2-1910-20-25 (W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center), 555L-153250 (Ametek, Inc. Div Aerospace & Defense), 6-1-1910-20-25 (W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center) and 2 more.

What NSN replaces 6685-00-531-2838?

There are 3 known substitutes for 6685-00-531-2838: 6685-00-544-7984, 5945-00-557-2911, 5340-01-228-0697. Verify interchangeability with system specifications before substitution.

What are the specifications of 256011?

Key specifications for 256011: Overall Diameter: 2.710 INCHES NOMINAL IN; Material: COPPER ALLOY 511 ACTUATING ELEMENT; Color: BLACK CASE; Material: GLASS PROTECTIVE CRYSTAL. 28 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-531-2838 still in active supply?

NSN 6685-00-531-2838 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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