PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25-1001XUC-01B-150PSI30VACGage,compound Pressure-Vacuum,di

Ashcroft Inc Dba Heise · NSN 6685-00-618-3519 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-618-3519 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-618-3519. Primary manufacturer part number: 25-1001XUC-01B-150PSI30VAC.
Features
  • Gage,compound Pressure-Vacuum,di — FSC 6685
  • Surface Treatment: ENAMEL
  • Adjustability: NONADJUSTABLE
  • Pointer Type: INDICATING
  • Connection Location: BACK, CENTER
  • Dial Size: 2-1/2 IN. DIA IN
  • Material: COPPER ALLOY 511 ACTUATING ELEMENT
  • Scale Name for Which Pointer Is Designed: PRESSURE-VACUUM
Applications
  • Applications requiring Copper Alloy 511 Actuating Element construction
General Description

The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-00-618-3519, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-618-3519
Primary Part Number25-1001XUC-01B-150PSI30VAC
Item NameGage,compound Pressure-Vacuum,di
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusCANCELLED
Surface TreatmentENAMEL
AdjustabilityNONADJUSTABLE
Pointer TypeINDICATING
Connection LocationBACK, CENTER
Dial Size2-1/2 IN. DIA IN
MaterialCOPPER ALLOY 511 ACTUATING ELEMENT
Scale Name for Which Pointer Is DesignedPRESSURE-VACUUM
Actuation TypeSINGLE BOURDON TUBE
Graduation Unit5.0 INCHES AND 10.0 POUNDS PER SQUARE INCH LBS
Scale TypeMULTIPLE
Scale Range+0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 150.0 POUNDS PRESSURE PER SQUARE INCH LBS
Connector Type VentNOT PROVIDED
Stud LocationBACK
Scale NamePRESSURE AND PRESSURE-VACUUM
Bezel TypeSNAP-ON
Connection Size0.125 IN. NPT DIA IN
Scale Smallest Increment1.0 INCHES AND 2.0 POUNDS PER SQUARE INCH (PSI) LBS
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Connection TypeEXTERNAL
Mounting MethodFLUSH PANEL AND STUD(S) AND BRACKET(S)
Pointer ColorBLACK
Stud Quantity2
MaterialSTEEL CASE
Scale Accuracy2 PCT MIDDLE HALF,3 PCT REMAINDER
Connection Quantity1
MaterialGLASS PROTECTIVE CRYSTAL
Overall Diameter2.810 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6685-00-103-2853 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
6685-00-228-3781 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
5330-00-424-4624104 INTERCHANGEABLE
Retainer,packing
Air Products & Chemicals, Inc
5965-00-689-1545020-520-001-000 INTERCHANGEABLE
Earphone Element
Roanwell, Llc
1005-00-731-0362 INTERCHANGEABLE
Barrel Assembly
2520-00-737-370551630 INTERCHANGEABLE
Flange,companion,vehicular Unive
Chrysler Corp Detroit Universal Div
6685-00-764-305615-1000-01L30 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-881-0795 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
6685-01-096-17111001743 INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
Tld Ace Corp Div Tld Ace
6685-01-096-171210026REVA INTERCHANGEABLE
Gage,compound Pressure-Vacuum,di
Tld Ace Corp Div Tld Ace
Cross-Reference Index
Part NumberManufacturer
25-1001XUC-01B-150PSI30VAC PRIMARY Ashcroft Inc Dba Heise (USA)
2 1-2 3DFM1-8CBM30X150 Desco Corp Marsh Bellofram Div (USA)
C844U Ametek, Inc. Div Aerospace & Defense (USA)
87896 Ametek, Inc. Div Aerospace & Defense (USA)
51630 Keco Industries, Inc. (USA)
122998 Harmonic Drive L.l.c. (USA)
1AFC00600AFA Bellofram Corporation (USA)
2 1-2 3DFM1-8CBM30X150 Bellofram Corporation (USA)
45B Liftec Inc Div Liftec, Inc. (USA)
1AFC00600AFA Desco Corp Marsh Bellofram Div (USA)
AD9523 Ametek, Inc. Div Aerospace & Defense (USA)
51630 Keco Industries Inc Aerospace Ground Equipment Div (USA)
C644U Ametek, Inc. Div Aerospace & Defense (USA)
25-1000U01B150PSI30VAC Ashcroft Inc Dba Heise (USA)
087896 PRIMARY Ametek, Inc. Div Aerospace & Defense (USA)
D21360 Rheem Mfg Co Air Conditioning Div (USA)
Related Parts
6685-00-103-2853INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
6685-00-228-3781INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
5330-00-424-4624INTERCHANGEABLE
RETAINER,PACKING
104
5965-00-689-1545INTERCHANGEABLE
EARPHONE ELEMENT
020-520-001-000
1005-00-731-0362INTERCHANGEABLE
BARREL ASSEMBLY
2520-00-737-3705INTERCHANGEABLE
FLANGE,COMPANION,VEHICULAR UNIVE
51630
6685-00-764-3056INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
15-1000-01L30
6685-00-881-0795INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
6685-01-096-1711INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
1001743
6685-01-096-1712INTERCHANGEABLE
GAGE,COMPOUND PRESSURE-VACUUM,DI
10026REVA
5961-01-173-2700INTERCHANGEABLE
TRANSISTOR
45B
6530-01-318-2970INTERCHANGEABLE
PAD,POSITIONING,SURGICAL
51630

Frequently Asked Questions

What is NSN 6685-00-618-3519?

NSN 6685-00-618-3519 is a Gage,compound Pressure-Vacuum,di, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-618-3519?

NSN 6685-00-618-3519 has 16 cross-referenced part numbers: 25-1001XUC-01B-150PSI30VAC (Ashcroft Inc Dba Heise), 2 1-2 3DFM1-8CBM30X150 (Desco Corp Marsh Bellofram Div), C844U (Ametek, Inc. Div Aerospace & Defense), 87896 (Ametek, Inc. Div Aerospace & Defense), 51630 (Keco Industries, Inc.) and 11 more.

What NSN replaces 6685-00-618-3519?

There are 12 known substitutes for 6685-00-618-3519: 6685-00-103-2853, 6685-00-228-3781, 5330-00-424-4624 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25-1001XUC-01B-150PSI30VAC?

Key specifications for 25-1001XUC-01B-150PSI30VAC: Surface Treatment: ENAMEL; Adjustability: NONADJUSTABLE; Pointer Type: INDICATING; Connection Location: BACK, CENTER. 28 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-618-3519 still in active supply?

NSN 6685-00-618-3519 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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