PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1-AAC-23300-CDAGage,pressure,dial Indicating

Desco Corp Marsh Bellofram Div · NSN 6685-00-526-6445 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-526-6445 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-526-6445. Primary manufacturer part number: 1-AAC-23300-CDA.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Material: BRONZE ACTUATING ELEMENT
  • Material: GLASS PROTECTIVE CRYSTAL
  • FSC Application Data: GAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE
  • Nondefinitive Spec/std Data: 1 TYPE
  • Material: BRASS CASE
  • Overall Diameter: 2.810 INCHES NOMINAL IN
  • Supplementary Features: POLISHED CASE
Applications
  • Applications requiring Bronze Actuating Element construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-526-6445, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Desco Corp Marsh Bellofram Div. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-526-6445
Primary Part Number1-AAC-23300-CDA
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerDesco Corp Marsh Bellofram Div
StatusACTIVE
MaterialBRONZE ACTUATING ELEMENT
MaterialGLASS PROTECTIVE CRYSTAL
FSC Application DataGAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE
Nondefinitive Spec/std Data1 TYPE
MaterialBRASS CASE
Overall Diameter2.810 INCHES NOMINAL IN
Supplementary FeaturesPOLISHED CASE
Connection Size0.250 IN. NPT DIA IN
Scale Accuracy2 PERCENT MIDDLE HALF OF RANGE,3 PERCENT REMAINDER
Connection TypeEXTERNAL
AdjustabilityNONADJUSTABLE
Mounting Connection LocationBOTTOM
Pointer ColorBLACK
Dial Size2-1/2 IN. DIA IN
Scale NamePRESSURE
Scale Range+0.0 TO 600.0 POUNDS PRESSURE PER SQUARE INCH LBS
Actuation TypeSINGLE BOURDON TUBE
Connector Type VentNOT PROVIDED
Pointer TypeINDICATING
Mounting MethodRIGID STEM
Connection LocationBOTTOM
Scale Smallest Increment20.0 POUNDS PER SQUARE INCH (PSI) LBS
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Scale TypeSINGLE
Graduation Unit100.0 POUNDS PER SQUARE INCH LBS
Connection Quantity1
Bezel TypeTHREAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6685-00-244-1830Z100D1X3232 INTERCHANGEABLE
Gage,pressure,dial Indicating
Uniweld Products, Inc. Dba Uniweld Products Inc
6685-00-527-6370389904PC40 INTERCHANGEABLE
Gage,pressure,dial Indicating
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
1-AAC-23300-CDA Desco Corp Marsh Bellofram Div (USA)
Z600D1X3275 Uniweld Products, Inc. Dba Uniweld Products Inc (USA)
1-AAC-23300-CDA Bellofram Corporation (USA)
P500 Ametek, Inc. Div Aerospace & Defense (USA)
MILG16983 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Z-600B1X3275 Uniweld Products, Inc. Dba Uniweld Products Inc (USA)
Related Parts
6685-00-244-1830INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
Z100D1X3232
6685-00-527-6370INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
389904PC40

Frequently Asked Questions

What is NSN 6685-00-526-6445?

NSN 6685-00-526-6445 is a Gage,pressure,dial Indicating, manufactured by Desco Corp Marsh Bellofram Div, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-526-6445?

NSN 6685-00-526-6445 has 6 cross-referenced part numbers: 1-AAC-23300-CDA (Desco Corp Marsh Bellofram Div), Z600D1X3275 (Uniweld Products, Inc. Dba Uniweld Products Inc), 1-AAC-23300-CDA (Bellofram Corporation), P500 (Ametek, Inc. Div Aerospace & Defense), MILG16983 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 6685-00-526-6445?

There are 2 known substitutes for 6685-00-526-6445: 6685-00-244-1830, 6685-00-527-6370. Verify interchangeability with system specifications before substitution.

What are the specifications of 1-AAC-23300-CDA?

Key specifications for 1-AAC-23300-CDA: Material: BRONZE ACTUATING ELEMENT; Material: GLASS PROTECTIVE CRYSTAL; FSC Application Data: GAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE; Nondefinitive Spec/std Data: 1 TYPE. 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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