PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1077AGage,pressure,dial Indicating

Ashcroft Inc Dba Heise · NSN 6685-00-956-6398 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-956-6398 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-956-6398. Primary manufacturer part number: 1077A.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Overall Diameter: 7.562 INCHES NOMINAL IN
  • Material: IRON CASE
  • Surface Treatment: PAINT EPOXY CASE
  • Material: GLASS PROTECTIVE CRYSTAL
  • Material: BRONZE ACTUATING ELEMENT
  • Color: BLACK CASE
  • Bolt Circle Diameter: 7.000 INCHES NOMINAL IN
Applications
  • Applications requiring Iron Case construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-956-6398, 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 28 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-956-6398
Primary Part Number1077A
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
Overall Diameter7.562 INCHES NOMINAL IN
MaterialIRON CASE
Surface TreatmentPAINT EPOXY CASE
MaterialGLASS PROTECTIVE CRYSTAL
MaterialBRONZE ACTUATING ELEMENT
ColorBLACK CASE
Bolt Circle Diameter7.000 INCHES NOMINAL IN
Mounting Hole Diameter0.196 INCHES NOMINAL IN
Mounting Hole Quantity3
Scale TypeSINGLE
Scale Smallest Increment1.0 POUNDS LBS
AdjustabilityADJUSTABLE
Graduation Unit5.0 POUNDS LBS
Bezel TypeHINGE
Scale NamePRESSURE
Connection Size1/4 IN. NPT IN
Connection TypeEXTERNAL
Scale Range+0.000 TO 60.000 POUNDS PRESSURE PER SQUARE INCH LBS
Connector Type VentNOT PROVIDED
Pointer TypeINDICATING
Pointer ColorWHITE
Dial Size6 IN. DIA IN
Scale Inscription/background ColorWHITE FIGURES ON BLACK BACKGROUND
Scale Accuracy1/2 OF 1 PCT ENTIRE RANGE
Connection LocationBACK
Actuation TypeSINGLE BOURDON TUBE
Connection Quantity1
Mounting MethodFLUSH PANEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
6685-00-068-344445-1377AS-02B100 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-234-898260-1379AS-02B-600 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-531-3938132550-1903 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6685-00-585-860660-1377AS02BXT1100 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-683-95914 1-2 103FMH1-4LBM60 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
6685-00-822-692345-1377RS-02B-200 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
5305-01-165-32991077-A INTERCHANGEABLE
Screw,cap,hexagon Head
Eaton Aerospace, Llc Dba Jackson South
2620-01-625-43041077A INTERCHANGEABLE
Tire,pneumatic,aircraft
Saginaw Products Corporation Dba Cignys
Cross-Reference Index
Part NumberManufacturer
1077A Ashcroft Inc Dba Heise (USA)
Related Parts
6685-00-068-3444INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1377AS-02B100
6685-00-234-8982INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
60-1379AS-02B-600
6685-00-531-3938INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
132550-1903
6685-00-585-8606INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
60-1377AS02BXT1100
6685-00-683-9591INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
4 1-2 103FMH1-4LBM60
6685-00-822-6923INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1377RS-02B-200
5305-01-165-3299INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
1077-A
2620-01-625-4304INTERCHANGEABLE
TIRE,PNEUMATIC,AIRCRAFT
1077A

Frequently Asked Questions

What is NSN 6685-00-956-6398?

NSN 6685-00-956-6398 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 6685-00-956-6398?

NSN 6685-00-956-6398 has 1 cross-referenced part number: 1077A (Ashcroft Inc Dba Heise).

What NSN replaces 6685-00-956-6398?

There are 8 known substitutes for 6685-00-956-6398: 6685-00-068-3444, 6685-00-234-8982, 6685-00-531-3938 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1077A?

Key specifications for 1077A: Overall Diameter: 7.562 INCHES NOMINAL IN; Material: IRON CASE; Surface Treatment: PAINT EPOXY CASE; Material: GLASS PROTECTIVE CRYSTAL. 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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