PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2 1-2-56F12D150X30Gage,compound Pressure-Vacuum-Te

Liftec Inc Div Liftec, Inc. · NSN 6685-00-143-6689 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-143-6689 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-143-6689. Primary manufacturer part number: 2 1-2-56F12D150X30.
Features
  • Gage,compound Pressure-Vacuum-Te — FSC 6685
  • Overall Diameter: 3.468 INCHES NOMINAL IN
  • Mounting Method: FLUSH PANEL
  • Unable to Decode: UNABLE TO DECODE
  • Scale Inscription/background Color: BLACK FIGURES ON WHITE BACKGROUND; BLACK FIGURES ON WHITE BACKGROUND; RED FIGURES ON WHITE BACKGROUND
  • Material: STEEL CASE
  • Scale Name: PRESSURE AND PRESSURE-VACUUM AND TEMPERATURE
  • Pointer Type: INDICATING
Applications
  • Applications requiring Steel Case construction
General Description

The Gage,compound Pressure-Vacuum-Te, cataloged under National Stock Number 6685-00-143-6689, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Liftec Inc Div Liftec, Inc.. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-143-6689
Primary Part Number2 1-2-56F12D150X30
Item NameGage,compound Pressure-Vacuum-Te
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerLiftec Inc Div Liftec, Inc.
StatusCANCELLED
Overall Diameter3.468 INCHES NOMINAL IN
Mounting MethodFLUSH PANEL
Unable to DecodeUNABLE TO DECODE
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND; BLACK FIGURES ON WHITE BACKGROUND; RED FIGURES ON WHITE BACKGROUND
MaterialSTEEL CASE
Scale NamePRESSURE AND PRESSURE-VACUUM AND TEMPERATURE
Pointer TypeINDICATING
Actuation TypeSINGLE BOURDON TUBE
MaterialCOPPER ALLOY 511 ACTUATING ELEMENT
AdjustabilityADJUSTABLE
Scale Range-30.0 TO 110.0 DEG FAHRENHEIT AND +0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 150.0 POUNDS PRESSURE PER SQUARE INCH LBS
Graduation Unit10.0 DEGREES AND 30.0 INCHES AND 15.0 POUNDS PER SQUARE INCH LBS
Connection Quantity1
Scale TypeMULTIPLE
Dial Size2-1/2 IN. DIA IN
MaterialPLASTIC PROTECTIVE CRYSTAL
Scale Smallest Increment2.0 DEGREES AND 2.0 INCHES AND 1.0 POUNDS PER SQUARE INCH (PSI) LBS
Pointer ColorBLACK
Scale Accuracy2 PCT ACCURACY RATING MIDDLE HALF OF RANGE,3 PCT REMAINDER; 2 PCT ACCURACY RATING MIDDLE HALF OF RANGE,3 PCT REMAINDER; 2 PCT ACCURACY RATING MIDDLE HALF OF RANGE,3 PCT REMAINDER
Connection Size0.250 IN. NPT DIA IN
Bolt Circle Diameter3.000 INCHES NOMINAL IN
Mounting Hole Diameter0.140 INCHES NOMINAL IN
Scale Name for Which Pointer Is DesignedPRESSURE AND VACUUM AND TEMPERATURE
Connector Type VentNOT PROVIDED
Bezel TypeSNAP-ON
Mounting Hole Quantity3
Surface TreatmentENAMEL CASE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
3110-00-142-4280 INTERCHANGEABLE
Bearing,ball,airframe
4730-00-411-4725 INTERCHANGEABLE
Bend,tube,return
Cross-Reference Index
Part NumberManufacturer
5-489000003 Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc (USA)
56D Liftec Inc Div Liftec, Inc. (USA)
2 1-2-56F12D150X30 PRIMARY Liftec Inc Div Liftec, Inc. (USA)
723898-197 PRIMARY Raytheon Company Div Rmd Strategic (USA)
56D30X150 Sypris Electronics, Llc (USA)
5024-14 Raytheon Company Dba Raytheon (USA)
13214E0731 Cecom Lr Center (USA)
723898-197 Raytheon Company Dba Raytheon (USA)
56D30X150 PRIMARY Liftec Inc Div Liftec, Inc. (USA)
Related Parts
3110-00-142-4280INTERCHANGEABLE
BEARING,BALL,AIRFRAME
4730-00-411-4725INTERCHANGEABLE
BEND,TUBE,RETURN

Frequently Asked Questions

What is NSN 6685-00-143-6689?

NSN 6685-00-143-6689 is a Gage,compound Pressure-Vacuum-Te, manufactured by Liftec Inc Div Liftec, Inc., classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-143-6689?

NSN 6685-00-143-6689 has 9 cross-referenced part numbers: 5-489000003 (Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc), 56D (Liftec Inc Div Liftec, Inc.), 2 1-2-56F12D150X30 (Liftec Inc Div Liftec, Inc.), 723898-197 (Raytheon Company Div Rmd Strategic), 56D30X150 (Sypris Electronics, Llc) and 4 more.

What NSN replaces 6685-00-143-6689?

There are 2 known substitutes for 6685-00-143-6689: 3110-00-142-4280, 4730-00-411-4725. Verify interchangeability with system specifications before substitution.

What are the specifications of 2 1-2-56F12D150X30?

Key specifications for 2 1-2-56F12D150X30: Overall Diameter: 3.468 INCHES NOMINAL IN; Mounting Method: FLUSH PANEL; Unable to Decode: UNABLE TO DECODE; Special Features: PHOSPHOR BRONZE ACTUATIING ELEMENT. 29 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-143-6689 still in active supply?

NSN 6685-00-143-6689 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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