PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

821900-2Gage,pressure,dial Indicating

Naval Air Development Center Warminster Navairsyscom Hq · NSN 6685-00-899-1861 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-899-1861 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-899-1861. Primary manufacturer part number: 821900-2.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Surface Treatment: ENAMEL CASE
  • Material: GLASS PROTECTIVE CRYSTAL
  • Material: STEEL ACTUATING ELEMENT
  • Material: STEEL CASE
  • Actuation Type: SINGLE BOURDON TUBE
  • Connection Size: 0.250 IN. NPT DIA IN
  • Connection Location: LOWER
Applications
  • Applications requiring Glass Protective Crystal construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-899-1861, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Naval Air Development Center Warminster Navairsyscom Hq. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-899-1861
Primary Part Number821900-2
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerNaval Air Development Center Warminster Navairsyscom Hq
StatusACTIVE
Surface TreatmentENAMEL CASE
MaterialGLASS PROTECTIVE CRYSTAL
MaterialSTEEL ACTUATING ELEMENT
MaterialSTEEL CASE
Actuation TypeSINGLE BOURDON TUBE
Connection Size0.250 IN. NPT DIA IN
Connection LocationLOWER
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Graduation Unit500.0 POUNDS LBS
Pointer ColorBLACK
Scale TypeSINGLE
Bezel TypeSNAP-ON
Mounting MethodRIGID STEM
Dial Size2 IN. DIA IN
Connector Type VentNOT PROVIDED
Scale Smallest Increment100.0 POUNDS LBS
Scale Range+0.000 TO 3000.000 POUNDS PRESSURE PER SQUARE INCH LBS
Connection TypeEXTERNAL
Pointer TypeINDICATING
Connection Quantity1
Scale NamePRESSURE
AdjustabilityADJUSTABLE
Mounting Connection LocationBOTTOM
Overall Diameter2.187 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6685-00-250-5426 INTERCHANGEABLE
Gage,pressure,dial Indicating
5999-01-596-0876 INTERCHANGEABLE
Parts Kit,electronic Equipment
Cross-Reference Index
Part NumberManufacturer
2-5DP1-4LM3000 Desco Corp Marsh Bellofram Div (USA)
2-5DP1-4LM3000 Bellofram Corporation (USA)
821900-2 PRIMARY Naval Air Development Center Warminster Navairsyscom Hq (USA)
1390-200-8 Liquidonics Industries Inc (USA)
Related Parts
6685-00-250-5426INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
5999-01-596-0876INTERCHANGEABLE
PARTS KIT,ELECTRONIC EQUIPMENT

Frequently Asked Questions

What is NSN 6685-00-899-1861?

NSN 6685-00-899-1861 is a Gage,pressure,dial Indicating, manufactured by Naval Air Development Center Warminster Navairsyscom Hq, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-899-1861?

NSN 6685-00-899-1861 has 4 cross-referenced part numbers: 2-5DP1-4LM3000 (Desco Corp Marsh Bellofram Div), 2-5DP1-4LM3000 (Bellofram Corporation), 821900-2 (Naval Air Development Center Warminster Navairsyscom Hq), 1390-200-8 (Liquidonics Industries Inc).

What NSN replaces 6685-00-899-1861?

There are 2 known substitutes for 6685-00-899-1861: 6685-00-250-5426, 5999-01-596-0876. Verify interchangeability with system specifications before substitution.

What are the specifications of 821900-2?

Key specifications for 821900-2: Surface Treatment: ENAMEL CASE; Material: GLASS PROTECTIVE CRYSTAL; Material: STEEL ACTUATING ELEMENT; Material: STEEL CASE. 25 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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