PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

45-1377AS-02B100Gage,pressure,dial Indicating

Ashcroft Inc Dba Heise · NSN 6685-00-068-3444 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-068-3444 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-068-3444. Primary manufacturer part number: 45-1377AS-02B100.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Stud Location: BACK
  • Scale Inscription/background Color: BLACK FIGURES ON WHITE BACKGROUND
  • Overall Diameter: 6.062 INCHES NOMINAL IN
  • Bezel Type: HINGE
  • Material: ALUMINUM AND STEEL CASE
  • Material: GLASS PROTECTIVE CRYSTAL
  • Stud Quantity: 3
Applications
  • Applications requiring Aluminum and Steel Case construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-068-3444, 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 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 5 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
NSN6685-00-068-3444
Primary Part Number45-1377AS-02B100
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusCANCELLED
Stud LocationBACK
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Overall Diameter6.062 INCHES NOMINAL IN
Bezel TypeHINGE
MaterialALUMINUM AND STEEL CASE
MaterialGLASS PROTECTIVE CRYSTAL
Stud Quantity3
Connection Quantity1
Scale NamePRESSURE
Scale Range+0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH LBS
Graduation Unit10.0 POUNDS LBS
Scale Smallest Increment2.0 POUNDS LBS
Actuation TypeSINGLE BOURDON TUBE
AdjustabilityADJUSTABLE
Scale TypeSINGLE
Dial Size4-1/2 IN. DIA IN
Pointer ColorBLACK
Pointer TypeINDICATING
MaterialCOPPER ALLOY 511 ACTUATING ELEMENT
Scale Accuracy0.5 PCT ENTIRE RANGE
Connection Size0.250 IN. NPT IN
Connection LocationBACK
Bolt Circle Diameter5.375 INCHES NOMINAL IN
FSC Application DataGAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE
Connector Type VentNOT PROVIDED
Mounting MethodFLUSH PANEL AND STUD(S)
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6685-00-066-1059 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-108-1108361-509-9006 INTERCHANGEABLE
Gage,pressure,dial Indicating
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
6685-00-234-898260-1379AS-02B-600 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
5310-00-251-00881377A INTERCHANGEABLE
Nut,plain,hexagon
Mgm Brakes Inc Div Indian Head Industries Inc
6620-00-459-1622 INTERCHANGEABLE
Gauge,pressure
6685-00-531-340645-1377AS02B160 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-531-3938132550-1903 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6685-00-585-860660-1377AS02BXT1100 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-683-95914 1-2 103FMH1-4LBM60 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
6685-00-783-4827 INTERCHANGEABLE
Gage,pressure,dial Indicating
Cross-Reference Index
Part NumberManufacturer
45-1377AST1SA1-14 Ashcroft Inc Dba Heise (USA)
45-1377AS02BXT1SA0-100 Ashcroft Inc Dba Heise (USA)
1377A0-100PSIG Ashcroft Inc Dba Heise (USA)
45-1377AST1S01XX Raytheon Company Dba Raytheon (USA)
45-1377AS-02B100 PRIMARY Ashcroft Inc Dba Heise (USA)
45-1377A02B100 Ashcroft Inc Dba Heise (USA)
GG-G-76 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
83E128P4D11E Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA)
1077A Ashcroft Inc Dba Heise (USA)
1377A Ashcroft Inc Dba Heise (USA)
377A2BX05 Ashcroft Inc Dba Heise (USA)
80224-A7061-367B Robertshaw Controls Co Executive Office (USA)
Related Parts
6685-00-066-1059INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-108-1108INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
361-509-9006
6685-00-234-8982INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
60-1379AS-02B-600
5310-00-251-0088INTERCHANGEABLE
NUT,PLAIN,HEXAGON
1377A
6620-00-459-1622INTERCHANGEABLE
GAUGE,PRESSURE
6685-00-531-3406INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1377AS02B160
6685-00-531-3938INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
132550-1903
6685-00-585-8606INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
60-1377AS02BXT1100
6685-00-683-9591INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
4 1-2 103FMH1-4LBM60
6685-00-783-4827INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-822-6923INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1377RS-02B-200
6685-00-840-3766INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING

Frequently Asked Questions

What is NSN 6685-00-068-3444?

NSN 6685-00-068-3444 is a Gage,pressure,dial Indicating, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-068-3444?

NSN 6685-00-068-3444 has 12 cross-referenced part numbers: 45-1377AST1SA1-14 (Ashcroft Inc Dba Heise), 45-1377AS02BXT1SA0-100 (Ashcroft Inc Dba Heise), 1377A0-100PSIG (Ashcroft Inc Dba Heise), 45-1377AST1S01XX (Raytheon Company Dba Raytheon), 45-1377AS-02B100 (Ashcroft Inc Dba Heise) and 7 more.

What NSN replaces 6685-00-068-3444?

There are 12 known substitutes for 6685-00-068-3444: 6685-00-066-1059, 6685-00-108-1108, 6685-00-234-8982 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 45-1377AS-02B100?

Key specifications for 45-1377AS-02B100: Stud Location: BACK; Scale Inscription/background Color: BLACK FIGURES ON WHITE BACKGROUND; Overall Diameter: 6.062 INCHES NOMINAL IN; Bezel Type: HINGE. 28 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-068-3444 still in active supply?

NSN 6685-00-068-3444 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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