PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18041Gage,compound Pressure-Vacuum,di

Ametek, Inc. Div Aerospace & Defense · NSN 6685-00-264-3986 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-264-3986 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-264-3986. Primary manufacturer part number: 18041.
Features
  • Gage,compound Pressure-Vacuum,di — FSC 6685
  • Bolt Circle Diameter: 4.250 INCHES NOMINAL IN
  • Mounting Hole Diameter: 0.156 INCHES NOMINAL IN
  • Nondefinitive Spec/std Data: A TYPE
  • Departure From Cited Document: AS MODIFIED IN CASE MATERIAL
  • Surface Treatment: ENAMEL CASE
  • Material: PLASTIC CASE
  • Scale Range: +0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 200.0 POUNDS PRESSURE PER SQUARE INCH LBS
Applications
  • Applications requiring Plastic Case construction
General Description

The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-00-264-3986, 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 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-264-3986
Primary Part Number18041
Item NameGage,compound Pressure-Vacuum,di
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAmetek, Inc. Div Aerospace & Defense
StatusACTIVE
Bolt Circle Diameter4.250 INCHES NOMINAL IN
Mounting Hole Diameter0.156 INCHES NOMINAL IN
Nondefinitive Spec/std DataA TYPE
Departure From Cited DocumentAS MODIFIED IN CASE MATERIAL
Surface TreatmentENAMEL CASE
MaterialPLASTIC CASE
Scale Range+0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 200.0 POUNDS PRESSURE PER SQUARE INCH LBS
Mounting MethodFLUSH PANEL
Connection Quantity1
Connection Size0.250 IN. NPT DIA IN
Dial Size3-1/2 IN. DIA IN
Actuation TypeSINGLE BOURDON TUBE
Graduation Unit30.0 INCHES AND 20.0 POUNDS PER SQUARE INCH LBS
AdjustabilityADJUSTABLE
Pointer TypeINDICATING AND REFERENCE
Connection LocationBACK
Bezel TypeSLIPS-ON
Scale NamePRESSURE-VACUUM
Scale Smallest Increment6.0 INCHES AND 2.0 POUNDS PER SQUARE INCH (PSI) LBS
MaterialPLASTIC PROTECTIVE CRYSTAL
Connector Type VentNOT PROVIDED
Scale Name for Which Pointer Is DesignedPRESSURE-VACUUM
Connection TypeEXTERNAL
Pointer ColorBLACK AND RED
Scale TypeSINGLE
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Scale Accuracy1/2 OF 1 PCT MIDDLE THIRD OF RANGE; 1/2 OF 1 PCT ENTIRE RANGE
MaterialCOPPER ALLOY 511 ACTUATING ELEMENT
Usage DesignW/HOT WATER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5310-00-010-82081804-1 INTERCHANGEABLE
Washer,keyway
Aerocontrolex Group, Inc. Div Talley Actuators
5133-00-189-9286 INTERCHANGEABLE
Drill,twist
3455-00-268-9351INVOLUTE 40-2 1-3/4 INTERCHANGEABLE
Cutter,milling,involute Gear
F & D Tool Co Inc
5330-00-358-265618041 INTERCHANGEABLE
Gasket
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
5950-00-647-7488 INTERCHANGEABLE
Transformer,power
5895-00-788-174318041 INTERCHANGEABLE
Spoke,gear Spring
Raytheon Company Dba Raytheon
5998-01-352-965116629 INTERCHANGEABLE
Circuit Card Assembly
Culligan Intl Co Sub of Beatrice Companies Inc
5998-01-416-7711 INTERCHANGEABLE
Pcb,ventilator,volu
Cross-Reference Index
Part NumberManufacturer
18041 Ametek, Inc. Div Aerospace & Defense (USA)
385-8700-1194391ALT8PC85 Naval Ship Systems Command (USA)
49MC1133N2-1ITEM28 Carrier Corp (USA)
563-5901-982852ITEM78 Naval Ship Systems Command (USA)
385-8700-1194391ALT8PCBBGAGE Naval Ship Systems Command (USA)
271-8700-958714REVBITEM206 Naval Ship Systems Command (USA)
NA13-PCF4-RWCX Ashcroft Inc Dba Heise (USA)
563-5901-985437ALT2PC6 Naval Ship Systems Command (USA)
5901-1383560REVAITEM27 Naval Ship Systems Command (USA)
385-8700-1194391ALT8PC87 Naval Ship Systems Command (USA)
49MC1133N28PC6 Carrier Corp (USA)
52MAD1241N1ITEM27 Carrier Corp (USA)
Related Parts
5310-00-010-8208INTERCHANGEABLE
WASHER,KEYWAY
1804-1
5133-00-189-9286INTERCHANGEABLE
DRILL,TWIST
3455-00-268-9351INTERCHANGEABLE
CUTTER,MILLING,INVOLUTE GEAR
INVOLUTE 40-2 1-3/4
5330-00-358-2656INTERCHANGEABLE
GASKET
18041
5950-00-647-7488INTERCHANGEABLE
TRANSFORMER,POWER
5895-00-788-1743INTERCHANGEABLE
SPOKE,GEAR SPRING
18041
5998-01-352-9651INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
16629
5998-01-416-7711INTERCHANGEABLE
PCB,VENTILATOR,VOLU

Frequently Asked Questions

What is NSN 6685-00-264-3986?

NSN 6685-00-264-3986 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 6685-00-264-3986?

NSN 6685-00-264-3986 has 12 cross-referenced part numbers: 18041 (Ametek, Inc. Div Aerospace & Defense), 385-8700-1194391ALT8PC85 (Naval Ship Systems Command), 49MC1133N2-1ITEM28 (Carrier Corp), 563-5901-982852ITEM78 (Naval Ship Systems Command), 385-8700-1194391ALT8PCBBGAGE (Naval Ship Systems Command) and 7 more.

What NSN replaces 6685-00-264-3986?

There are 8 known substitutes for 6685-00-264-3986: 5310-00-010-8208, 5133-00-189-9286, 3455-00-268-9351 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18041?

Key specifications for 18041: Bolt Circle Diameter: 4.250 INCHES NOMINAL IN; Mounting Hole Diameter: 0.156 INCHES NOMINAL IN; Nondefinitive Spec/std Data: A TYPE; Departure From Cited Document: AS MODIFIED IN CASE MATERIAL. 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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