PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C500Gage,compound Pressure-Vacuum,di

Ametek, Inc. Div Aerospace & Defense · NSN 6685-00-527-6180 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-527-6180 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-527-6180. Primary manufacturer part number: C500.
Features
  • Gage,compound Pressure-Vacuum,di — FSC 6685
  • Surface Treatment: ENAMEL CASE
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SCALE ACCURACY,SCALE RANGE,SCALE SMALLEST SMALLEST INCREMENT,AND OVERALL DIM.
  • FSC Application Data: INDICATOR,PRESSURE,EXCEPT ENGINE
  • Material: GLASS PROTECTIVE CRYSTAL
  • Mounting Method: RIGID STEM
  • Pointer Type: INDICATING
  • Usage Design: FOR USE W/AIR OR WATER
Applications
  • Applications requiring Glass Protective Crystal construction
General Description

The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-00-527-6180, 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 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-527-6180
Primary Part NumberC500
Item NameGage,compound Pressure-Vacuum,di
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAmetek, Inc. Div Aerospace & Defense
StatusACTIVE
Surface TreatmentENAMEL CASE
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY SCALE ACCURACY,SCALE RANGE,SCALE SMALLEST SMALLEST INCREMENT,AND OVERALL DIM.
FSC Application DataINDICATOR,PRESSURE,EXCEPT ENGINE
MaterialGLASS PROTECTIVE CRYSTAL
Mounting MethodRIGID STEM
Pointer TypeINDICATING
Usage DesignFOR USE W/AIR OR WATER
Actuation TypeSINGLE BOURDON TUBE
Unable to DecodeUNABLE TO DECODE
Dial Size2-1/2 IN. DIA IN
AdjustabilityNONADJUSTABLE
Connection Quantity1
Bezel TypeSLIPS-ON
Graduation Unit30.0 INCHES OF MERCURY AND 50.0 POUNDS PER SQUARE INCH LBS
Scale NamePRESSURE AND PRESSURE-VACUUM
Connection LocationLOWER
Connection Size0.250 IN. NPT DIA IN
Pointer ColorBLACK
Scale Range+0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 300.0 POUNDS PRESSURE PER SQUARE INCH LBS
Connection TypeEXTERNAL
MaterialCOPPER ALLOY 511 ACTUATING ELEMENT
Scale Smallest Increment10.0 INCHES OF MERCURY (INHG) AND 5.0 POUNDS PER SQUARE INCH (PSI) LBS
Scale Name for Which Pointer Is DesignedPRESSURE-VACUUM
Connector Type VentNOT PROVIDED
Scale Accuracy2 PCT MIDDLE HALF OF RANGE
Scale TypeMULTIPLE
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
MaterialSTEEL CASE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-068-2699J1816 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
Bellofram Corporation
6685-00-081-770812293-0 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
Ametek, Inc. Div Aerospace & Defense
6685-00-104-9625 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
2825-00-148-1680800-899-90X INTERCHANGEABLE
Governor with Conve
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
5975-00-152-1144 INTERCHANGEABLE
Box Connector,electrical
6685-00-202-3966 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
6685-00-248-6975046646A INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
Ametek, Inc. Div Aerospace & Defense
3433-00-399-7037505976 INTERCHANGEABLE
Torch Outfit,oxyhydrogen Cutting
Naval Ship Systems Command
6685-00-426-67102429 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
Alter Harry Co the Div of T E C
5905-00-499-6512C500 INTERCHANGEABLE
Resistor,fixed,film
Howell Instruments, Inc. Dba Howell Instruments Inc
Cross-Reference Index
Part NumberManufacturer
C500 Ametek, Inc. Div Aerospace & Defense (USA)
505S Ametek, Inc. Div Aerospace & Defense (USA)
Related Parts
6685-00-068-2699INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
J1816
6685-00-081-7708INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
12293-0
6685-00-104-9625INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
2825-00-148-1680INTERCHANGEABLE
GOVERNOR WITH CONVE
800-899-90X
5975-00-152-1144INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
6685-00-202-3966INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
6685-00-248-6975INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
046646A
3433-00-399-7037INTERCHANGEABLE
TORCH OUTFIT,OXYHYDROGEN CUTTING
505976
6685-00-426-6710INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
2429
5905-00-499-6512INTERCHANGEABLE
RESISTOR,FIXED,FILM
C500
6685-00-581-8867INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
7891-051REVDPC25
5940-00-643-5470INTERCHANGEABLE
SPLICE,CONDUCTOR
S500

Frequently Asked Questions

What is NSN 6685-00-527-6180?

NSN 6685-00-527-6180 is a Gage,compound Pressure-Vacuum,di, manufactured by Ametek, Inc. Div Aerospace & Defense, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-527-6180?

NSN 6685-00-527-6180 has 2 cross-referenced part numbers: C500 (Ametek, Inc. Div Aerospace & Defense), 505S (Ametek, Inc. Div Aerospace & Defense).

What NSN replaces 6685-00-527-6180?

There are 12 known substitutes for 6685-00-527-6180: 6685-00-068-2699, 6685-00-081-7708, 6685-00-104-9625 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C500?

Key specifications for C500: Surface Treatment: ENAMEL CASE; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SCALE ACCURACY,SCALE RANGE,SCALE SMALLEST SMALLEST INCREMENT,AND OVERALL DIM.; FSC Application Data: INDICATOR,PRESSURE,EXCEPT ENGINE; Material: GLASS PROTECTIVE CRYSTAL. 30 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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