PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1377DGage,pressure,dial Indicating

Ashcroft Inc Dba Heise · NSN 6685-00-941-9321 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-941-9321 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-941-9321. Primary manufacturer part number: 1377D.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Surface Treatment: ENAMEL CASE
  • Material: STEEL ACTUATING ELEMENT
  • Material: ALUMINUM CASE
  • Material: GLASS PROTECTIVE CRYSTAL
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SCALE TYPE,DIA SIZE
  • Actuation Type: SINGLE BOURDON TUBE
  • Scale Type: SINGLE
Applications
  • Applications requiring Steel Actuating Element construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-941-9321, 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 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-941-9321
Primary Part Number1377D
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
Surface TreatmentENAMEL CASE
MaterialSTEEL ACTUATING ELEMENT
MaterialALUMINUM CASE
MaterialGLASS PROTECTIVE CRYSTAL
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY SCALE TYPE,DIA SIZE
Actuation TypeSINGLE BOURDON TUBE
Scale TypeSINGLE
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Connection Quantity1
Connection TypeEXTERNAL
Pointer TypeINDICATING
Mounting MethodFLUSH PANEL AND STUD(S)
Scale NamePRESSURE
Stud LocationBACK
Dial Size4-1/2 IN. DIA IN
Graduation Unit500.0 POUNDS LBS
Pointer ColorBLACK
Connector Type VentNOT PROVIDED
AdjustabilityADJUSTABLE
Bezel TypeHINGE
Scale Range+0.000 TO 5000.000 POUNDS PRESSURE PER SQUARE INCH LBS
Connection Size1/4 IN. NPT IN
Scale Accuracy1/2 OF 1 PCT ENTIRE RANGE
Stud Quantity3
Connection LocationLOWER
Scale Smallest Increment50.0 POUNDS LBS
Overall Diameter6.062 INCHES NOMINAL IN
Bolt Circle Diameter5.374 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
6685-00-067-495460-1377DS04BXT1-3000 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-078-7539309-008 INTERCHANGEABLE
Gage,pressure,dial Indicating
Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
6685-00-585-451145-1377DS02B6000 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-893-5266 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-944-892060 1377 SS 02B 6000 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
Cross-Reference Index
Part NumberManufacturer
1377D Ashcroft Inc Dba Heise (USA)
Related Parts
6685-00-067-4954INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
60-1377DS04BXT1-3000
6685-00-078-7539INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
309-008
6685-00-585-4511INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1377DS02B6000
6685-00-893-5266INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-944-8920INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
60 1377 SS 02B 6000

Frequently Asked Questions

What is NSN 6685-00-941-9321?

NSN 6685-00-941-9321 is a Gage,pressure,dial Indicating, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-941-9321?

NSN 6685-00-941-9321 has 1 cross-referenced part number: 1377D (Ashcroft Inc Dba Heise).

What NSN replaces 6685-00-941-9321?

There are 5 known substitutes for 6685-00-941-9321: 6685-00-067-4954, 6685-00-078-7539, 6685-00-585-4511 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1377D?

Key specifications for 1377D: Surface Treatment: ENAMEL CASE; Material: STEEL ACTUATING ELEMENT; Material: ALUMINUM CASE; Material: GLASS PROTECTIVE CRYSTAL. 29 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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