PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SIZE12Gage,pressure,dial Indicating

Ashcroft Inc Dba Heise · NSN 6685-00-849-3156 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-849-3156 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-849-3156. Primary manufacturer part number: SIZE12.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Color: BLACK CASE
  • FSC Application Data: GAGE,PRESSURE,DIAL INDICATING EXCEPT ENGINE
  • Surface Treatment: ENAMEL, WRINKLE FINISH CASE
  • Material: GLASS PROTECTIVE CRYSTAL
  • Material: STEEL CORROSION RESISTING ACTUATING ELEMENT
  • Surface Treatment: PAINT ACTUATING ELEMENT
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SCALE TYPE,CONNECTION QUANTITY,CONNECTION TYPE,CONNECTION LOCATION,CONNECTION SIZE,MOUNTING METHOD,BOLD CIRCLE DIAMETER,MOUNTING HOLE QUANTITY,MOUNTING HOLE DIAMETER,W/AUTOMATIC THERMAL COMPENSATOR
Applications
  • Applications requiring Glass Protective Crystal construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-849-3156, 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 30 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-849-3156
Primary Part NumberSIZE12
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
ColorBLACK CASE
FSC Application DataGAGE,PRESSURE,DIAL INDICATING EXCEPT ENGINE
Surface TreatmentENAMEL, WRINKLE FINISH CASE
MaterialGLASS PROTECTIVE CRYSTAL
MaterialSTEEL CORROSION RESISTING ACTUATING ELEMENT
Surface TreatmentPAINT ACTUATING ELEMENT
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY SCALE TYPE,CONNECTION QUANTITY,CONNECTION TYPE,CONNECTION LOCATION,CONNECTION SIZE,MOUNTING METHOD,BOLD CIRCLE DIAMETER,MOUNTING HOLE QUANTITY,MOUNTING HOLE DIAMETER,W/AUTOMATIC THERMAL COMPENSATOR
MaterialALUMINUM CASE
Bolt Circle Diameter12.750 INCHES NOMINAL IN
Scale Smallest Increment0.5 POUNDS LBS
Scale NamePRESSURE
Pointer ColorBLACK
Pointer TypeINDICATING
AdjustabilityNONADJUSTABLE
Connection LocationLOWER SIDE
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Scale TypeSINGLE
Unable to DecodeUNABLE TO DECODE
Scale Accuracy0.1 OF 1 PCT ENTIRE RANGE
Connection TypeINTERNAL
Actuation TypeSINGLE BOURDON TUBE
Mounting MethodFLUSH PANEL
Scale Range+0.0 TO 400.0 POUNDS PRESSURE PER SQUARE INCH LBS
Connection Quantity1
Bezel TypeHINGE
Overall Diameter13.656 INCHES NOMINAL IN
Connector Type VentNOT PROVIDED
Connection Size1/8 IN. NPT IN
Graduation Unit20.0 POUNDS LBS
Dial Size12 IN. DIA IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-082-1528 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-082-1529 INTERCHANGEABLE
Gage,pressure,dial Indicating
5970-00-221-5269 INTERCHANGEABLE
Insulation Sleeving,electrical
3030-00-242-8661 INTERCHANGEABLE
Pin,belt Lacing
6515-00-299-8066 INTERCHANGEABLE
Support,arch
6685-00-531-2291CCBCGV100CDF INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-753-2023B08ATMFAAV00000 INTERCHANGEABLE
Gage,absolute Pressure,dial Indi
Ashcroft Inc Dba Heise
6685-00-753-2024 INTERCHANGEABLE
Gage,absolute Pressure,dial Indi
6685-00-827-8968 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-849-2253 INTERCHANGEABLE
Gage,pressure,dial Indicating
Cross-Reference Index
Part NumberManufacturer
SIZE12 Ashcroft Inc Dba Heise (USA)
Related Parts
6685-00-082-1528INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-082-1529INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
5970-00-221-5269INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
3030-00-242-8661INTERCHANGEABLE
PIN,BELT LACING
6515-00-299-8066INTERCHANGEABLE
SUPPORT,ARCH
6685-00-531-2291INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
CCBCGV100CDF
6685-00-753-2023INTERCHANGEABLE
GAGE,ABSOLUTE PRESSURE,DIAL INDI
B08ATMFAAV00000
6685-00-753-2024INTERCHANGEABLE
GAGE,ABSOLUTE PRESSURE,DIAL INDI
6685-00-827-8968INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-849-2253INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-849-2254INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-849-2255INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING

Frequently Asked Questions

What is NSN 6685-00-849-3156?

NSN 6685-00-849-3156 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 6685-00-849-3156?

NSN 6685-00-849-3156 has 1 cross-referenced part number: SIZE12 (Ashcroft Inc Dba Heise).

What NSN replaces 6685-00-849-3156?

There are 12 known substitutes for 6685-00-849-3156: 6685-00-082-1528, 6685-00-082-1529, 5970-00-221-5269 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SIZE12?

Key specifications for SIZE12: Color: BLACK CASE; FSC Application Data: GAGE,PRESSURE,DIAL INDICATING EXCEPT ENGINE; Surface Treatment: ENAMEL, WRINKLE FINISH CASE; Material: GLASS PROTECTIVE CRYSTAL. 30 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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