PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

45 1377 AS 00B XTS 30"/0 VACGage,vacuum,indicating

Ashcroft Inc Dba Heise · NSN 6685-00-078-7495 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-078-7495 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-078-7495. Primary manufacturer part number: 45 1377 AS 00B XTS 30"/0 VAC.
Features
  • Gage,vacuum,indicating — FSC 6685
  • Connector Type Vent: NOT PROVIDED
  • Dial Size: 4-1/2 IN. DIA IN
  • Material: GLASS PROTECTIVE CRYSTAL
  • Connection Location: BACK
  • Scale Type: SINGLE
  • Graduation Unit: 5.0 INCHES IN
  • Material: COPPER ALLOY ACTUATING ELEMENT
Applications
  • Applications requiring Glass Protective Crystal construction
General Description

The Gage,vacuum,indicating, cataloged under National Stock Number 6685-00-078-7495, 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 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-078-7495
Primary Part Number45 1377 AS 00B XTS 30"/0 VAC
Item NameGage,vacuum,indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
Connector Type VentNOT PROVIDED
Dial Size4-1/2 IN. DIA IN
MaterialGLASS PROTECTIVE CRYSTAL
Connection LocationBACK
Scale TypeSINGLE
Graduation Unit5.0 INCHES IN
MaterialCOPPER ALLOY ACTUATING ELEMENT
Actuation TypeBOURDON TUBE
Scale Smallest Increment0.2 INCHES IN
Scale NameVACUUM
Pointer TypeINDICATING
Connection Quantity1
Pointer ColorBLACK
Scale Range+0.0 TO 30.0 INCHES OF VACUUM IN
AdjustabilityADJUSTABLE
MaterialALUMINUM CASE
Connection Size0.438 IN. NPT DIA IN
Scale AccuracyPPRM 1 PCT FULL SCALE
Scale Inscription/background ColorBLACK MARKINGS ON WHITE BACKGROUND
Overall Diameter6.094 INCHES NOMINAL IN
Surface TreatmentENAMEL CASE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4320-00-656-484833-0002 INTERCHANGEABLE
Parts Kit,rotary Pump
Hamilton Sundstrand Corporation
4920-00-831-5322 INTERCHANGEABLE
Analyzer,field Syst
6665-00-851-7757 INTERCHANGEABLE
Radiac Set
5961-00-892-87062N3904 INTERCHANGEABLE
Transistor
Semitronics Corp
5440-01-006-0943 INTERCHANGEABLE
Stepladder
6210-01-287-541482051A21C21J134L11N1(R) INTERCHANGEABLE
Light,indicator
Safran Electronics & Defense, Avionics Usa, Llc
5310-01-367-575233-0002 INTERCHANGEABLE
Nut,sleeve
Dntlworks Equipment Corporation
5310-01-684-4351330-002 INTERCHANGEABLE
Nut,plain,hexagon
Kirby Morgan Dive Systems Inc
5935-01-707-1658330HJ002Z10905-49B INTERCHANGEABLE
Backshell,electrical Connector
Glenair, Inc.
5895-01-715-963033000-2 INTERCHANGEABLE
Amplifier Unit
Milpower, Inc. Dba Milpower Inc
Cross-Reference Index
Part NumberManufacturer
45-1377AV00BX0BTS Ashcroft Inc Dba Heise (USA)
AA14-WVCA-RWX9 Ashcroft Inc Dba Heise (USA)
330-000 Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc (USA)
330-002 Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc (USA)
45 1377 AS 00B XTS 30"/0 VAC PRIMARY Ashcroft Inc Dba Heise (USA)
Related Parts
4320-00-656-4848INTERCHANGEABLE
PARTS KIT,ROTARY PUMP
33-0002
4920-00-831-5322INTERCHANGEABLE
ANALYZER,FIELD SYST
6665-00-851-7757INTERCHANGEABLE
RADIAC SET
5961-00-892-8706INTERCHANGEABLE
TRANSISTOR
2N3904
5440-01-006-0943INTERCHANGEABLE
STEPLADDER
6210-01-287-5414INTERCHANGEABLE
LIGHT,INDICATOR
82051A21C21J134L11N1(R)
5310-01-367-5752INTERCHANGEABLE
NUT,SLEEVE
33-0002
5310-01-684-4351INTERCHANGEABLE
NUT,PLAIN,HEXAGON
330-002
5935-01-707-1658INTERCHANGEABLE
BACKSHELL,ELECTRICAL CONNECTOR
330HJ002Z10905-49B
5895-01-715-9630INTERCHANGEABLE
AMPLIFIER UNIT
33000-2

Frequently Asked Questions

What is NSN 6685-00-078-7495?

NSN 6685-00-078-7495 is a Gage,vacuum,indicating, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-078-7495?

NSN 6685-00-078-7495 has 5 cross-referenced part numbers: 45-1377AV00BX0BTS (Ashcroft Inc Dba Heise), AA14-WVCA-RWX9 (Ashcroft Inc Dba Heise), 330-000 (Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc), 330-002 (Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc), 45 1377 AS 00B XTS 30"/0 VAC (Ashcroft Inc Dba Heise).

What NSN replaces 6685-00-078-7495?

There are 10 known substitutes for 6685-00-078-7495: 4320-00-656-4848, 4920-00-831-5322, 6665-00-851-7757 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 45 1377 AS 00B XTS 30"/0 VAC?

Key specifications for 45 1377 AS 00B XTS 30"/0 VAC: Connector Type Vent: NOT PROVIDED; Dial Size: 4-1/2 IN. DIA IN; End Item Identification: SUPPORT EQUIPMENT,F-4 AIRCRAFT; F-15 AIRCRAFT; A-7 AIRCRAFT; T-37 AIRCRAFT; F-16 AIRCRAFT; C-135 AIRCRAFT; Material: GLASS PROTECTIVE CRYSTAL. 24 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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