PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

440ASRGage,pressure,dial Indicating

Bristol Babcock Inc Helicoid Instruments Div · NSN 6685-00-411-2366 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-411-2366 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-411-2366. Primary manufacturer part number: 440ASR.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Material: ALUMINUM ALLOY CASE
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED IN SCALE SMALLEST INCREMENT
  • Surface Treatment: ENAMEL CASE
  • Connection Size: 1/4 IN. NPT IN
  • Pointer Color: BLACK
  • Dial Size: 4-1/2 IN. DIA IN
  • Connection Quantity: 1
Applications
  • Applications requiring Aluminum Alloy Case construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-411-2366, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Bristol Babcock Inc Helicoid Instruments Div. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-411-2366
Primary Part Number440ASR
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerBristol Babcock Inc Helicoid Instruments Div
StatusCANCELLED
MaterialALUMINUM ALLOY CASE
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED IN SCALE SMALLEST INCREMENT
Surface TreatmentENAMEL CASE
Connection Size1/4 IN. NPT IN
Pointer ColorBLACK
Dial Size4-1/2 IN. DIA IN
Connection Quantity1
Connection TypeEXTERNAL
Bezel TypeSNAP-ON
Scale TypeSINGLE
Stud LocationBACK
Stud Quantity3
Mounting MethodFLUSH PANEL AND STUD(S)
Connection LocationLOWER
Scale NamePRESSURE
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Actuation TypeSINGLE BOURDON TUBE
Graduation Unit200.0 POUNDS LBS
Pointer TypeINDICATING
Connector Type VentNOT PROVIDED
Scale Smallest Increment10.0 POUNDS LBS
Scale Range+0.000 TO 3000.000 POUNDS PRESSURE PER SQUARE INCH LBS
Scale AccuracyPORM 1/2 OF 1 PCT
MaterialSTEEL CORROSION RESISTING ACTUATING ELEMENT
AdjustabilityADJUSTABLE
MaterialGLASS PROTECTIVE CRYSTAL
Overall Diameter5.937 INCHES NOMINAL IN
Mounting Hole Diameter0.218 INCHES NOMINAL IN
Bolt Circle Diameter5.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
6685-00-054-3950F3D2H7A00034UAA INTERCHANGEABLE
Gage,pressure,dial Indicating
Bristol Babcock Inc Helicoid Instruments Div
6685-00-068-344645-1377BS02B600 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-123-2552 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-542-1743 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-573-9212 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-822-692345-1377RS-02B-200 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-877-6963 INTERCHANGEABLE
Gage,pressure,dial Indicating
6220-01-260-3504 INTERCHANGEABLE
Stop Light-Taillight,vehicular
6605-01-447-4851430-R INTERCHANGEABLE
Syringe
Ok International Div Semtronics
Cross-Reference Index
Part NumberManufacturer
440ASR Bristol Babcock Inc Helicoid Instruments Div (USA)
430R Bristol Babcock Inc Helicoid Instruments Div (USA)
Related Parts
6685-00-054-3950INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
F3D2H7A00034UAA
6685-00-068-3446INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1377BS02B600
6685-00-123-2552INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-542-1743INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-573-9212INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-822-6923INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1377RS-02B-200
6685-00-877-6963INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6220-01-260-3504INTERCHANGEABLE
STOP LIGHT-TAILLIGHT,VEHICULAR
6605-01-447-4851INTERCHANGEABLE
SYRINGE
430-R

Frequently Asked Questions

What is NSN 6685-00-411-2366?

NSN 6685-00-411-2366 is a Gage,pressure,dial Indicating, manufactured by Bristol Babcock Inc Helicoid Instruments Div, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-411-2366?

NSN 6685-00-411-2366 has 2 cross-referenced part numbers: 440ASR (Bristol Babcock Inc Helicoid Instruments Div), 430R (Bristol Babcock Inc Helicoid Instruments Div).

What NSN replaces 6685-00-411-2366?

There are 9 known substitutes for 6685-00-411-2366: 6685-00-054-3950, 6685-00-068-3446, 6685-00-123-2552 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 440ASR?

Key specifications for 440ASR: Material: ALUMINUM ALLOY CASE; Reference Number Differentiating Characteristics: AS DIFFERENTIATED IN SCALE SMALLEST INCREMENT; Surface Treatment: ENAMEL CASE; Connection Size: 1/4 IN. NPT IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-411-2366 still in active supply?

NSN 6685-00-411-2366 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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