PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

45-1377AS02B160Gage,pressure,dial Indicating

Ashcroft Inc Dba Heise · NSN 6685-00-531-3406 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-531-3406 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-531-3406. Primary manufacturer part number: 45-1377AS02B160.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Material: COPPER ALLOY 511 ACTUATING ELEMENT
  • FSC Application Data: GAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE
  • Material: GLASS PROTECTIVE CRYSTAL
  • Material: ALUMINUM AND STEEL CASE
  • Surface Treatment: ENAMEL CASE
  • Scale Accuracy: 1/2 OF 1 PERCENT OF FULL SCALE RANGE
  • Adjustability: ADJUSTABLE
Applications
  • Applications requiring Copper Alloy 511 Actuating Element construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-531-3406, 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 29 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-531-3406
Primary Part Number45-1377AS02B160
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusCANCELLED
MaterialCOPPER ALLOY 511 ACTUATING ELEMENT
FSC Application DataGAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE
MaterialGLASS PROTECTIVE CRYSTAL
MaterialALUMINUM AND STEEL CASE
Surface TreatmentENAMEL CASE
Scale Accuracy1/2 OF 1 PERCENT OF FULL SCALE RANGE
AdjustabilityADJUSTABLE
Actuation TypeSINGLE BOURDON TUBE
Dial Size4-1/2 IN. DIA IN
Scale Range+0.000 TO 160.000 POUNDS PRESSURE PER SQUARE INCH LBS
Connection Quantity1
Bezel TypeHINGE
Scale Smallest Increment2.0 POUNDS PER SQUARE INCH (PSI) LBS
Graduation Unit20.0 POUNDS PER SQUARE INCH LBS
Pointer TypeINDICATING
Connection Size1/4 IN. NPT IN
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Scale TypeSINGLE
Mounting MethodFLUSH PANEL W/ HOLES OR STUDS
Stud LocationBACK
Stud Quantity3
Pointer ColorBLACK
Connection LocationBACK, LOWER
Connector Type VentNOT PROVIDED
Scale NamePRESSURE
Connection TypeEXTERNAL
Mounting Hole Diameter0.219 INCHES NOMINAL IN
Bolt Circle Diameter5.375 INCHES NOMINAL IN
Mounting Hole Quantity3
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6685-00-066-1059 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-068-344445-1377AS-02B100 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
6685-00-108-1108361-509-9006 INTERCHANGEABLE
Gage,pressure,dial Indicating
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
5310-00-251-00881377A INTERCHANGEABLE
Nut,plain,hexagon
Mgm Brakes Inc Div Indian Head Industries Inc
6620-00-459-1622 INTERCHANGEABLE
Gauge,pressure
6685-00-531-3938132550-1903 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6685-00-683-95914 1-2 103FMH1-4LBM60 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
6685-00-783-4827 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-840-3766 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-900-2655451377AS02B 0/15 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ashcroft Inc Dba Heise
Cross-Reference Index
Part NumberManufacturer
45-1377AS02B160 PRIMARY Ashcroft Inc Dba Heise (USA)
1377A Ashcroft Inc Dba Heise (USA)
45-1377A2B160 Ashcroft Inc Dba Heise (USA)
Related Parts
6685-00-066-1059INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-068-3444INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
45-1377AS-02B100
6685-00-108-1108INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
361-509-9006
5310-00-251-0088INTERCHANGEABLE
NUT,PLAIN,HEXAGON
1377A
6620-00-459-1622INTERCHANGEABLE
GAUGE,PRESSURE
6685-00-531-3938INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
132550-1903
6685-00-683-9591INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
4 1-2 103FMH1-4LBM60
6685-00-783-4827INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-840-3766INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-900-2655INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
451377AS02B 0/15
6685-00-956-6396INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
60-1082SS-02B-XEY-0/15PSI
3460-01-149-0278INTERCHANGEABLE
WHEEL CONTACT DETECTOR
1377A

Frequently Asked Questions

What is NSN 6685-00-531-3406?

NSN 6685-00-531-3406 is a Gage,pressure,dial Indicating, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-531-3406?

NSN 6685-00-531-3406 has 3 cross-referenced part numbers: 45-1377AS02B160 (Ashcroft Inc Dba Heise), 1377A (Ashcroft Inc Dba Heise), 45-1377A2B160 (Ashcroft Inc Dba Heise).

What NSN replaces 6685-00-531-3406?

There are 12 known substitutes for 6685-00-531-3406: 6685-00-066-1059, 6685-00-068-3444, 6685-00-108-1108 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 45-1377AS02B160?

Key specifications for 45-1377AS02B160: Material: COPPER ALLOY 511 ACTUATING ELEMENT; FSC Application Data: GAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE; Material: GLASS PROTECTIVE CRYSTAL; Material: ALUMINUM AND STEEL CASE. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-531-3406 still in active supply?

NSN 6685-00-531-3406 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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