PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

45-1279A04B100Gage,pressure,dial Indicating

Ashcroft Inc Dba Heise · NSN 6685-00-068-9758 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-068-9758 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-068-9758. Primary manufacturer part number: 45-1279A04B100.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Mounting Method: SURFACE WALL
  • Connection Size: 0.500 IN. NPT DIA IN
  • Bolt Circle Diameter: 5.375 INCHES NOMINAL IN
  • Mounting Hole Diameter: 0.219 INCHES NOMINAL IN
  • Material: COPPER ALLOY 511 ACTUATING ELEMENT
  • Scale Name: PRESSURE
  • Scale Range: +0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH LBS
Applications
  • Applications requiring Copper Alloy 511 Actuating Element construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-068-9758, 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 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN6685-00-068-9758
Primary Part Number45-1279A04B100
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
Mounting MethodSURFACE WALL
Connection Size0.500 IN. NPT DIA IN
Bolt Circle Diameter5.375 INCHES NOMINAL IN
Mounting Hole Diameter0.219 INCHES NOMINAL IN
MaterialCOPPER ALLOY 511 ACTUATING ELEMENT
Scale NamePRESSURE
Scale Range+0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH LBS
Scale TypeSINGLE
Graduation Unit10.0 POUNDS LBS
Pointer ColorBLACK
Connection Quantity1
Pointer TypeINDICATING
Actuation TypeSINGLE BOURDON TUBE
Scale Accuracy1/2 OF 1 PCT ACCURACY RATING ENTIRE RANGE
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Overall Diameter5.813 INCHES NOMINAL IN
Dial Size4-1/2 IN. IN
AdjustabilityADJUSTABLE
Scale Smallest Increment1.0 POUNDS LBS
Mounting Hole Quantity3
Connection LocationBACK
MaterialGLASS PROTECTIVE CRYSTAL
Surface TreatmentENAMEL CASE
MaterialPLASTIC CASE
Connector Type VentNOT PROVIDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5315-00-010-6750 INTERCHANGEABLE
Key,woodruff
6685-00-065-1485AA442PM4RW 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
6685-00-842-125268A75D299-1 INTERCHANGEABLE
Gage,pressure,dial Indicating
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
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
3040-01-300-8596PB4-0221 INTERCHANGEABLE
Lever,remote Control
Marine Electronics, Llc Sales
Cross-Reference Index
Part NumberManufacturer
A1-70AD Ashcroft Inc Dba Heise (USA)
1279A Ashcroft Inc Dba Heise (USA)
45-1279A04B100 PRIMARY Ashcroft Inc Dba Heise (USA)
Related Parts
5315-00-010-6750INTERCHANGEABLE
KEY,WOODRUFF
6685-00-065-1485INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
AA442PM4RW
6685-00-087-9291INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
BA14-PPG2-LWXX
6685-00-729-4901INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
1279A
6685-00-842-1252INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
68A75D299-1
6685-00-959-3267INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
60-1279A02LT1PD600
6685-01-022-5854INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
AA44-2PH4-LWXX
3040-01-300-8596INTERCHANGEABLE
LEVER,REMOTE CONTROL
PB4-0221

Frequently Asked Questions

What is NSN 6685-00-068-9758?

NSN 6685-00-068-9758 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 6685-00-068-9758?

NSN 6685-00-068-9758 has 3 cross-referenced part numbers: A1-70AD (Ashcroft Inc Dba Heise), 1279A (Ashcroft Inc Dba Heise), 45-1279A04B100 (Ashcroft Inc Dba Heise).

What NSN replaces 6685-00-068-9758?

There are 8 known substitutes for 6685-00-068-9758: 5315-00-010-6750, 6685-00-065-1485, 6685-00-087-9291 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 45-1279A04B100?

Key specifications for 45-1279A04B100: Mounting Method: SURFACE WALL; Connection Size: 0.500 IN. NPT DIA IN; Bolt Circle Diameter: 5.375 INCHES NOMINAL IN; Mounting Hole Diameter: 0.219 INCHES NOMINAL IN. 26 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com