PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

45-1377AS02B300Gage,pressure,dial Indicating

Ashcroft Inc Dba Heise · NSN 6685-00-726-1911 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-726-1911 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-726-1911. Primary manufacturer part number: 45-1377AS02B300.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Surface Treatment: ENAMEL CASE
  • Material: ALUMINUM AND STEEL CASE
  • Material: GLASS PROTECTIVE CRYSTAL
  • Material: COPPER ALLOY 511 ACTUATING ELEMENT
  • Overall Diameter: 6.063 INCHES NOMINAL IN
  • Connection Location: BACK
  • Stud Location: BACK
Applications
  • Applications requiring Aluminum and Steel Case construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-726-1911, 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 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-726-1911
Primary Part Number45-1377AS02B300
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusCANCELLED
Surface TreatmentENAMEL CASE
MaterialALUMINUM AND STEEL CASE
MaterialGLASS PROTECTIVE CRYSTAL
MaterialCOPPER ALLOY 511 ACTUATING ELEMENT
Overall Diameter6.063 INCHES NOMINAL IN
Connection LocationBACK
Stud LocationBACK
AdjustabilityADJUSTABLE
Scale Accuracy1/2 OF 1 PCT ENTIRE SCALE
Pointer ColorBLACK
Connector Type VentNOT PROVIDED
Scale NamePRESSURE
Graduation Unit25.0 POUNDS PER SQUARE INCH LBS
Scale TypeSINGLE
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Connection Quantity1
Connection TypeEXTERNAL
Usage DesignFOR USE W/AIR,GAS,OIL,STEAM,WATER
Pointer TypeINDICATING
Dial Size4-1/2 IN. DIA IN
Connection Size0.250 IN. NPT IN
Mounting MethodFLUSH PANEL AND STUD(S)
Scale Smallest Increment5.0 POUNDS PER SQUARE INCH (PSI) LBS
Stud Quantity3
Scale Range+0.0 TO 300.0 POUNDS PRESSURE PER SQUARE INCH LBS
Actuation TypeSINGLE BOURDON TUBE
Bezel TypeHINGE
Bolt Circle Diameter2.688 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5330-00-075-191963189 INTERCHANGEABLE
Seal Plain
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
6685-00-081-281645-1379A02L200 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6105-00-312-4743 INTERCHANGEABLE
Winding,motor Field
5999-00-451-4326XX101002 INTERCHANGEABLE
Clip,electrical
Littelfuse, Inc.
6685-00-962-978745-1279SS-02L-300 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-988-442545-1379AS04L100 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-01-643-145045-1377-AS-02B-300 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
Cross-Reference Index
Part NumberManufacturer
1802 Ametek, Inc. Div Aerospace & Defense (USA)
45-1379A02B300 Ashcroft Inc Dba Heise (USA)
63189 Ametek, Inc. Div Aerospace & Defense (USA)
45-1377AS02B300 PRIMARY Ashcroft Inc Dba Heise (USA)
1379A Ashcroft Inc Dba Heise (USA)
279408 Valcor Engineering Corporation (USA)
063189 Ametek, Inc. Div Aerospace & Defense (USA)
279408 Kidde-Fenwal, Llc (USA)
1377A4-50FACE25NPT0-300 Ashcroft Inc Dba Heise (USA)
1803 Ametek, Inc. Div Aerospace & Defense (USA)
155361 PRIMARY Ametek, Inc. Div Aerospace & Defense (USA)
Related Parts
5330-00-075-1919INTERCHANGEABLE
SEAL PLAIN
63189
6685-00-081-2816INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1379A02L200
6105-00-312-4743INTERCHANGEABLE
WINDING,MOTOR FIELD
5999-00-451-4326INTERCHANGEABLE
CLIP,ELECTRICAL
XX101002
6685-00-962-9787INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1279SS-02L-300
6685-00-988-4425INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1379AS04L100
6685-01-643-1450INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1377-AS-02B-300

Frequently Asked Questions

What is NSN 6685-00-726-1911?

NSN 6685-00-726-1911 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 6685-00-726-1911?

NSN 6685-00-726-1911 has 11 cross-referenced part numbers: 1802 (Ametek, Inc. Div Aerospace & Defense), 45-1379A02B300 (Ashcroft Inc Dba Heise), 63189 (Ametek, Inc. Div Aerospace & Defense), 45-1377AS02B300 (Ashcroft Inc Dba Heise), 1379A (Ashcroft Inc Dba Heise) and 6 more.

What NSN replaces 6685-00-726-1911?

There are 7 known substitutes for 6685-00-726-1911: 5330-00-075-1919, 6685-00-081-2816, 6105-00-312-4743 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 45-1377AS02B300?

Key specifications for 45-1377AS02B300: Surface Treatment: ENAMEL CASE; Material: ALUMINUM AND STEEL CASE; Material: GLASS PROTECTIVE CRYSTAL; Material: COPPER ALLOY 511 ACTUATING ELEMENT. 29 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-726-1911 still in active supply?

NSN 6685-00-726-1911 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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