PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

68A75D299-1Gage,pressure,dial Indicating

Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · NSN 6685-00-842-1252 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-842-1252 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-842-1252. Primary manufacturer part number: 68A75D299-1.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Bolt Circle Diameter: 5.375 INCHES NOMINAL IN
  • Color: BLACK CASE
  • Material: GLASS PROTECTIVE CRYSTAL
  • Material: COPPER ALLOY 511 ACTUATING ELEMENT
  • Material: PLASTIC CASE
  • Surface Treatment: PAINT CRACKLE FINISH CASE
  • Unable to Decode: UNABLE TO DECODE
Applications
  • Applications requiring Glass Protective Crystal construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-842-1252, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-842-1252
Primary Part Number68A75D299-1
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusCANCELLED
Bolt Circle Diameter5.375 INCHES NOMINAL IN
ColorBLACK CASE
MaterialGLASS PROTECTIVE CRYSTAL
MaterialCOPPER ALLOY 511 ACTUATING ELEMENT
MaterialPLASTIC CASE
Surface TreatmentPAINT CRACKLE FINISH CASE
Unable to DecodeUNABLE TO DECODE
Graduation Unit5.0 POUNDS LBS
AdjustabilityADJUSTABLE
Pointer ColorBLACK
Scale Smallest Increment0.500 POUNDS LBS
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Connection Quantity1
Scale Accuracy1/2 OF 1 PCT ENTIRE RNAGE
Connector Type VentNOT PROVIDED
Connection TypeEXTERNAL
Connection LocationBACK, LOWER
Pointer TypeINDICATING
Scale TypeSINGLE
Scale Range+0.0 TO 30.0 POUNDS PRESSURE PER SQUARE INCH LBS
Mounting MethodFLUSH
Connection Size0.250 IN. NPT DIA IN
Actuation TypeSINGLE BOURDON TUBE
Scale NamePRESSURE
Dial Size4-1/2 IN. DIA IN
Overall Diameter5.812 INCHES NOMINAL IN
Mounting Hole Diameter0.219 INCHES NOMINAL IN
Mounting Hole Quantity3
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
5315-00-010-6750 INTERCHANGEABLE
Key,woodruff
6685-00-065-1485AA442PM4RW INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-068-975845-1279A04B100 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-087-9291BA14-PPG2-LWXX INTERCHANGEABLE
Gage,pressure,dial Indicating
Weksler Glass Thermometer Corp
6685-00-729-49011279A INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-822-692345-1377RS-02B-200 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-938-56484101EPE3 INTERCHANGEABLE
Gage,pressure,dial Indicating
Griffith Industrial Products Co Inc
6685-00-959-326760-1279A02LT1PD600 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-01-022-5854AA44-2PH4-LWXX INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
5310-01-285-2031T318 010-711 INTERCHANGEABLE
Nut,plain,clinch
Lockheed Martin Librascope Corporation
Cross-Reference Index
Part NumberManufacturer
45-1279AW02BX6B30 Ashcroft Inc Dba Heise (USA)
45-1279AS02BX6B301 Ashcroft Inc Dba Heise (USA)
AA14PPD4RWS Weksler Glass Thermometer Corp (USA)
1870 Ametek, Inc. Div Aerospace & Defense (USA)
175PC Liftec Inc Div Liftec, Inc. (USA)
AA14PPD4RWS Ashcroft Inc Dba Heise (USA)
45-1279AS-2BX6B30 Ashcroft Inc Dba Heise (USA)
D661-1242 Gas Equipment Engineering Corporation, the Dba Geeco (USA)
68A75D299-1 PRIMARY Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
AA0-41433 Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
P0242 Bellofram Corporation (USA)
45-1279A02B30 Ashcroft Inc Dba Heise (USA)
1279A Ashcroft Inc Dba Heise (USA)
4 1-2 1FM1-4LBM30RBRS60 Desco Corp Marsh Bellofram Div (USA)
Related Parts
5315-00-010-6750INTERCHANGEABLE
KEY,WOODRUFF
6685-00-065-1485INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
AA442PM4RW
6685-00-068-9758INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1279A04B100
6685-00-087-9291INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
BA14-PPG2-LWXX
6685-00-729-4901INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
1279A
6685-00-822-6923INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1377RS-02B-200
6685-00-938-5648INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
4101EPE3
6685-00-959-3267INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
60-1279A02LT1PD600
6685-01-022-5854INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
AA44-2PH4-LWXX
5310-01-285-2031INTERCHANGEABLE
NUT,PLAIN,CLINCH
T318 010-711
3040-01-300-8596INTERCHANGEABLE
LEVER,REMOTE CONTROL
PB4-0221

Frequently Asked Questions

What is NSN 6685-00-842-1252?

NSN 6685-00-842-1252 is a Gage,pressure,dial Indicating, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-842-1252?

NSN 6685-00-842-1252 has 14 cross-referenced part numbers: 45-1279AW02BX6B30 (Ashcroft Inc Dba Heise), 45-1279AS02BX6B301 (Ashcroft Inc Dba Heise), AA14PPD4RWS (Weksler Glass Thermometer Corp), 1870 (Ametek, Inc. Div Aerospace & Defense), 175PC (Liftec Inc Div Liftec, Inc.) and 9 more.

What NSN replaces 6685-00-842-1252?

There are 11 known substitutes for 6685-00-842-1252: 5315-00-010-6750, 6685-00-065-1485, 6685-00-068-9758 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 68A75D299-1?

Key specifications for 68A75D299-1: Bolt Circle Diameter: 5.375 INCHES NOMINAL IN; Color: BLACK CASE; Material: GLASS PROTECTIVE CRYSTAL; Material: COPPER ALLOY 511 ACTUATING ELEMENT. 29 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-842-1252 still in active supply?

NSN 6685-00-842-1252 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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