PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1390-200-8Gage,pressure,dial Indicating

Liquidonics Industries Inc · NSN 6685-00-250-5426 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-250-5426 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-250-5426. Primary manufacturer part number: 1390-200-8.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Overall Diameter: 2.188 INCHES NOMINAL IN
  • Mounting Method: RIGID STEM
  • Scale Type: SINGLE
  • Actuation Type: SINGLE BOURDON TUBE
  • Scale Accuracy: 2 PCT MIDDLE HALF OF RANGE,3 PCT REMAINDER
  • Pointer Type: INDICATING
  • Scale Name: PRESSURE
Applications
  • Applications requiring Plastic Case construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-250-5426, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Liquidonics Industries Inc. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-250-5426
Primary Part Number1390-200-8
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerLiquidonics Industries Inc
StatusACTIVE
Overall Diameter2.188 INCHES NOMINAL IN
Mounting MethodRIGID STEM
Scale TypeSINGLE
Actuation TypeSINGLE BOURDON TUBE
Scale Accuracy2 PCT MIDDLE HALF OF RANGE,3 PCT REMAINDER
Pointer TypeINDICATING
Scale NamePRESSURE
Pointer ColorBLACK
Scale Range+0.000 TO 3000.000 POUNDS PRESSURE PER SQUARE INCH LBS
Connector Type VentNOT PROVIDED
Scale Smallest Increment100.000 POUNDS LBS
Connection Size0.250 IN. NPT DIA IN
AdjustabilityNONADJUSTABLE
Connection TypeEXTERNAL
Graduation Unit500.0 POUNDS LBS
Dial Size2 IN. DIA IN
Connection LocationBOTTOM
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Connection Quantity1
MaterialPLASTIC CASE
MaterialPLASTIC PROTECTIVE CRYSTAL
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY SCALE TYPE,DIAL DATA,CONNECTION DATA AND MOUNTING DATA
MaterialCOPPER ALLOY ACTUATING ELEMENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
6685-00-057-1404J0642J-001 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
6685-00-431-9581160662A INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6685-00-459-459320-1005-P-01B-160 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-899-1861821900-2 INTERCHANGEABLE
Gage,pressure,dial Indicating
Naval Air Development Center Warminster Navairsyscom Hq
2805-01-035-8358388P INTERCHANGEABLE
Piston,internal Combustion Engin
Federal-Mogul Corp Government Sales Dept
6685-01-064-6516J1858 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
6620-01-411-2295J0452A-002 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
Cross-Reference Index
Part NumberManufacturer
1390-200-8 Liquidonics Industries Inc (USA)
65A102C79 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
P563 Ametek, Inc. Div Aerospace & Defense (USA)
G5A102C79 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
Related Parts
6685-00-057-1404INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
J0642J-001
6685-00-431-9581INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
160662A
6685-00-459-4593INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
20-1005-P-01B-160
6685-00-899-1861INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
821900-2
2805-01-035-8358INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
388P
6685-01-064-6516INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
J1858
6620-01-411-2295INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
J0452A-002

Frequently Asked Questions

What is NSN 6685-00-250-5426?

NSN 6685-00-250-5426 is a Gage,pressure,dial Indicating, manufactured by Liquidonics Industries Inc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-250-5426?

NSN 6685-00-250-5426 has 4 cross-referenced part numbers: 1390-200-8 (Liquidonics Industries Inc), 65A102C79 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), P563 (Ametek, Inc. Div Aerospace & Defense), G5A102C79 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).

What NSN replaces 6685-00-250-5426?

There are 7 known substitutes for 6685-00-250-5426: 6685-00-057-1404, 6685-00-431-9581, 6685-00-459-4593 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1390-200-8?

Key specifications for 1390-200-8: Overall Diameter: 2.188 INCHES NOMINAL IN; Mounting Method: RIGID STEM; Scale Type: SINGLE; Actuation Type: SINGLE BOURDON TUBE. 24 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com