PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

300443-1Gage,pressure,dial Indicating

Metadure Parts & Sales, Inc. · NSN 6685-00-881-7305 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-881-7305 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-881-7305. Primary manufacturer part number: 300443-1.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Mounting Hole Diameter: 0.218 INCHES NOMINAL IN
  • Material: BRASS CASE
  • Material: GLASS PROTECTIVE CRYSTAL
  • Material: COPPER ALLOY ACTUATING ELEMENT
  • Surface Treatment: ENAMEL CASE
  • Mounting Hole Quantity: 3
  • Connection Size: 0.125 IN. NPT IN
Applications
  • Applications requiring Brass Case construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-881-7305, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Metadure Parts & Sales, Inc.. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-881-7305
Primary Part Number300443-1
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerMetadure Parts & Sales, Inc.
StatusCANCELLED
Mounting Hole Diameter0.218 INCHES NOMINAL IN
MaterialBRASS CASE
MaterialGLASS PROTECTIVE CRYSTAL
MaterialCOPPER ALLOY ACTUATING ELEMENT
Surface TreatmentENAMEL CASE
Mounting Hole Quantity3
Connection Size0.125 IN. NPT IN
Mounting MethodFLUSH PANEL
Connector Type VentNOT PROVIDED
Scale TypeSINGLE
Dial Size4-1/2 IN. DIA IN
Pointer ColorBLACK
Actuation TypeSINGLE BOURDON TUBE
Scale Accuracy2 PCT ENTIRE RANGE
Bezel TypeTHREAD
Connection Quantity1
Connection LocationBACK
Pointer TypeINDICATING
Scale Smallest Increment20.0 POUNDS PER SQUARE INCH (PSI) LBS
Graduation Unit500.0 POUNDS PER SQUARE INCH LBS
Scale Range+0.0 TO 3500.0 POUNDS PRESSURE PER SQUARE INCH LBS
Scale NamePRESSURE
AdjustabilityNONADJUSTABLE
Connection TypeINTERNAL
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Bolt Circle Diameter5.375 INCHES NOMINAL IN
Overall Diameter6.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
9320-00-291-8468PS-384, 36"36".030" INTERCHANGEABLE
Rubber Sheet,solid
American Fuel Cell and Coated Fabrics Company, Llc
6116-01-138-1773PS-384 INTERCHANGEABLE
Repair Material,fuel Cell
American Fuel Cell and Coated Fabrics Company, Llc
Cross-Reference Index
Part NumberManufacturer
PS384 Sk and P Industries Inc Acme Gauge Div (USA)
B5739 Stewart Avionics Inc (USA)
300443-1 PRIMARY Metadure Parts & Sales, Inc. (USA)
Related Parts
9320-00-291-8468INTERCHANGEABLE
RUBBER SHEET,SOLID
PS-384, 36"36".030"
6116-01-138-1773INTERCHANGEABLE
REPAIR MATERIAL,FUEL CELL
PS-384

Frequently Asked Questions

What is NSN 6685-00-881-7305?

NSN 6685-00-881-7305 is a Gage,pressure,dial Indicating, manufactured by Metadure Parts & Sales, Inc., classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-881-7305?

NSN 6685-00-881-7305 has 3 cross-referenced part numbers: PS384 (Sk and P Industries Inc Acme Gauge Div), B5739 (Stewart Avionics Inc), 300443-1 (Metadure Parts & Sales, Inc.).

What NSN replaces 6685-00-881-7305?

There are 2 known substitutes for 6685-00-881-7305: 9320-00-291-8468, 6116-01-138-1773. Verify interchangeability with system specifications before substitution.

What are the specifications of 300443-1?

Key specifications for 300443-1: Mounting Hole Diameter: 0.218 INCHES NOMINAL IN; Material: BRASS CASE; Material: GLASS PROTECTIVE CRYSTAL; Material: COPPER ALLOY ACTUATING ELEMENT. 29 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-881-7305 still in active supply?

NSN 6685-00-881-7305 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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