PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F3D2H7A00034UAAGage,pressure,dial Indicating

Bristol Babcock Inc Helicoid Instruments Div · NSN 6685-00-054-3950 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-054-3950 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-054-3950. Primary manufacturer part number: F3D2H7A00034UAA.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Connector Type Vent: NOT PROVIDED
  • Material: ALUMINUM ALLOY CASE
  • Scale Accuracy: 1/2 PERCENT OF ENTIRE RANGE
  • Surface Treatment: ENAMEL CASE
  • Material Document and Classification: QQ-S-624, COMP 4130 FED SPEC SINGLE MATERIAL RESPONSE ACTUATING ELEMENT
  • Mounting Method: RIGID STEM
  • Scale Inscription/background Color: WHITE FIGURES ON BLACK BACKGROUND
Applications
  • Applications requiring Aluminum Alloy Case construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-054-3950, 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 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-054-3950
Primary Part NumberF3D2H7A00034UAA
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerBristol Babcock Inc Helicoid Instruments Div
StatusACTIVE
Connector Type VentNOT PROVIDED
MaterialALUMINUM ALLOY CASE
Scale Accuracy1/2 PERCENT OF ENTIRE RANGE
Surface TreatmentENAMEL CASE
Material Document and ClassificationQQ-S-624, COMP 4130 FED SPEC SINGLE MATERIAL RESPONSE ACTUATING ELEMENT
Mounting MethodRIGID STEM
Scale Inscription/background ColorWHITE FIGURES ON BLACK BACKGROUND
Connection LocationBOTTOM
Connection Size1/2 IN. NPT IN
FSC Application DataGAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE
MaterialSTEEL COMP 4130 ACTUATING ELEMENT
MaterialGLASS PROTECTIVE CRYSTAL
Pointer ColorWHITE
Scale Smallest Increment20.0 POUNDS PER SQUARE INCH (PSI) LBS
Actuation TypeSINGLE BOURDON TUBE
Scale Range+0.000 TO 2000.000 POUNDS PRESSURE PER SQUARE INCH LBS
Graduation Unit200.0 POUNDS PER SQUARE INCH LBS
Connection Quantity1
Scale TypeSINGLE
Dial Size4-1/2 INCH DIA IN
Pointer TypeINDICATING
Scale NamePRESSURE
AdjustabilityADJUSTABLE
Overall Diameter5.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
6685-00-068-344645-1377BS02B600 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-123-2552 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-411-2366 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
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
45-430R0-2000BTM1-2NPTBD Bristol Babcock Inc Helicoid Instruments Div (USA)
F3D2H3A00028UAA Bristol Babcock Inc Helicoid Instruments Div (USA)
430R Bristol Babcock Inc Helicoid Instruments Div (USA)
F2D2H7A0Q0000 Bristol Babcock Inc Helicoid Instruments Div (USA)
F3D2H7A00034UAA PRIMARY Bristol Babcock Inc Helicoid Instruments Div (USA)
Related Parts
6685-00-068-3446INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1377BS02B600
6685-00-123-2552INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-411-2366INTERCHANGEABLE
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
6220-01-260-3504INTERCHANGEABLE
STOP LIGHT-TAILLIGHT,VEHICULAR
6605-01-447-4851INTERCHANGEABLE
SYRINGE
430-R

Frequently Asked Questions

What is NSN 6685-00-054-3950?

NSN 6685-00-054-3950 is a Gage,pressure,dial Indicating, manufactured by Bristol Babcock Inc Helicoid Instruments Div, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-054-3950?

NSN 6685-00-054-3950 has 5 cross-referenced part numbers: 45-430R0-2000BTM1-2NPTBD (Bristol Babcock Inc Helicoid Instruments Div), F3D2H3A00028UAA (Bristol Babcock Inc Helicoid Instruments Div), 430R (Bristol Babcock Inc Helicoid Instruments Div), F2D2H7A0Q0000 (Bristol Babcock Inc Helicoid Instruments Div), F3D2H7A00034UAA (Bristol Babcock Inc Helicoid Instruments Div).

What NSN replaces 6685-00-054-3950?

There are 8 known substitutes for 6685-00-054-3950: 6685-00-068-3446, 6685-00-123-2552, 6685-00-411-2366 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of F3D2H7A00034UAA?

Key specifications for F3D2H7A00034UAA: Connector Type Vent: NOT PROVIDED; Material: ALUMINUM ALLOY CASE; Scale Accuracy: 1/2 PERCENT OF ENTIRE RANGE; Special Features: PROVIDED WITH A SAFETY CASE. 26 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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