PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9-658Gage,differential,dial Indicatin

Vacco Industries · NSN 6685-00-574-9018 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-574-9018 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-574-9018. Primary manufacturer part number: 9-658.
Features
  • Gage,differential,dial Indicatin — FSC 6685
  • Scale Type: SINGLE
  • Graduation Unit: 1.0 POUNDS PER SQUARE INCH LBS
  • Connection Size: 0.625 IN. TUBE IN
  • Material: PLASTIC TETRAFLUOROETHYLENE ACTUATING ELEMENT
  • Material: PLASTIC PROTECTIVE CRYSTAL
  • Connector Type Vent: NOT PROVIDED
  • Connection Location: BOTH SIDES
Applications
  • Applications requiring Plastic Tetrafluoroethylene Actuating Element construction
General Description

The Gage,differential,dial Indicatin, cataloged under National Stock Number 6685-00-574-9018, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Vacco Industries. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN6685-00-574-9018
Primary Part Number9-658
Item NameGage,differential,dial Indicatin
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerVacco Industries
StatusACTIVE
Scale TypeSINGLE
Graduation Unit1.0 POUNDS PER SQUARE INCH LBS
Connection Size0.625 IN. TUBE IN
MaterialPLASTIC TETRAFLUOROETHYLENE ACTUATING ELEMENT
MaterialPLASTIC PROTECTIVE CRYSTAL
Connector Type VentNOT PROVIDED
Connection LocationBOTH SIDES
Scale Inscription/background ColorBLACK FIGURES,WHITE BACKGROUND
Scale Range+0.0 TO 5.0 POUNDS PRESSURE PER SQUARE INCH LBS
AdjustabilityADJUSTABLE
Connection Quantity2
Pointer ColorBLACK
Pointer TypeINDICATING
Unable to DecodeUNABLE TO DECODE
Scale AccuracyPORM 2 PCT FULL RANGE
Scale NameDIFFERENTIAL PRESSURE
Scale Smallest Increment0.1 POUNDS PER SQUARE INCH (PSI) LBS
Actuation TypePISTON
Connection TypeINTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5120-00-240-889422013 INTERCHANGEABLE
Punch,aligning
Mayhew Steel Products Inc
5935-00-869-2803128C570H08 INTERCHANGEABLE
Connector,receptacle,electrical
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
6920-00-894-1326 INTERCHANGEABLE
Modification Kit,re
5950-01-095-6501984858-1C INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon
5999-01-222-70379658 INTERCHANGEABLE
Fin Assembly
Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect
7050-01-281-81209658 INTERCHANGEABLE
Converter,analog to Digital
Micross Hi Rel Power Solutions, Inc.
4920-01-501-6770 INTERCHANGEABLE
Pressure Gauge,airc
Cross-Reference Index
Part NumberManufacturer
9-658 Wintec Llc (USA)
9-658 PRIMARY Vacco Industries (USA)
34228-503PC29 Wintec Llc (USA)
Related Parts
5120-00-240-8894INTERCHANGEABLE
PUNCH,ALIGNING
22013
5935-00-869-2803INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
128C570H08
6920-00-894-1326INTERCHANGEABLE
MODIFICATION KIT,RE
5950-01-095-6501INTERCHANGEABLE
TRANSFORMER,POWER
984858-1C
5999-01-222-7037INTERCHANGEABLE
FIN ASSEMBLY
9658
7050-01-281-8120INTERCHANGEABLE
CONVERTER,ANALOG TO DIGITAL
9658
4920-01-501-6770INTERCHANGEABLE
PRESSURE GAUGE,AIRC

Frequently Asked Questions

What is NSN 6685-00-574-9018?

NSN 6685-00-574-9018 is a Gage,differential,dial Indicatin, manufactured by Vacco Industries, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-574-9018?

NSN 6685-00-574-9018 has 3 cross-referenced part numbers: 9-658 (Wintec Llc), 9-658 (Vacco Industries), 34228-503PC29 (Wintec Llc).

What NSN replaces 6685-00-574-9018?

There are 7 known substitutes for 6685-00-574-9018: 5120-00-240-8894, 5935-00-869-2803, 6920-00-894-1326 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9-658?

Key specifications for 9-658: Scale Type: SINGLE; Overall Width: 1.000 INCHES NOMINAL IN; Graduation Unit: 1.0 POUNDS PER SQUARE INCH LBS; Connection Size: 0.625 IN. TUBE IN. 22 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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