PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

34FB2TMManometer,vertical Tube

Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument · NSN 6685-00-789-2753 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-789-2753 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-789-2753. Primary manufacturer part number: 34FB2TM.
Features
  • Manometer,vertical Tube — FSC 6685
  • Zero Adjuster: PROVIDED
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SCALE RANGE
  • Operating Pressure: 20.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
  • Thread Size and Series/type Designator: 0.250-18 NPT
  • Connection Facility Type: INTERNAL
  • Mounting Type: BASE
  • Scale Range: +0.000 TO 20.000 INCHES IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Manometer,vertical Tube, cataloged under National Stock Number 6685-00-789-2753, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument. Government technical data includes 16 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-789-2753
Primary Part Number34FB2TM
Item NameManometer,vertical Tube
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerScott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument
StatusCANCELLED
Zero AdjusterPROVIDED
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY SCALE RANGE
Operating Pressure20.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Thread Size and Series/type Designator0.250-18 NPT
Connection Facility TypeINTERNAL
Mounting TypeBASE
Scale Range+0.000 TO 20.000 INCHES IN
Control ValvePROVIDED
Connection LocationTOP LEFT SIDE AND TOP RIGHT SIDE
Receptacle TypeWELL
Parallax Eliminating FeaturePROVIDED
Equalizing ValvePROVIDED
Indicating LiquidPROVIDED
Scale Smallest Increment0.100 INCHES IN
Connection TypeTHREADED
Accessory Components and Quantity1 BOTTLE INDICATING FLUID D-2930; 1 MERCURY THERMOMETER; 1 MAGNIFIER
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5935-00-401-57587140 INTERCHANGEABLE
Connector,plug,electrical
Mag Aerospace Industries, Llc Div Safran Cabins
7510-01-141-8657MBA8657 INTERCHANGEABLE
Calendar Board,wall
Mba Office Supply, Inc.
4820-01-144-9208 INTERCHANGEABLE
Seat,valve
Cross-Reference Index
Part NumberManufacturer
34FB2TM Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument (USA)
34FB2 Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument (USA)
A750 Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument (USA)
Related Parts
5935-00-401-5758INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
7140
7510-01-141-8657INTERCHANGEABLE
CALENDAR BOARD,WALL
MBA8657
4820-01-144-9208INTERCHANGEABLE
SEAT,VALVE

Frequently Asked Questions

What is NSN 6685-00-789-2753?

NSN 6685-00-789-2753 is a Manometer,vertical Tube, manufactured by Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-789-2753?

NSN 6685-00-789-2753 has 3 cross-referenced part numbers: 34FB2TM (Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument), 34FB2 (Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument), A750 (Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument).

What NSN replaces 6685-00-789-2753?

There are 3 known substitutes for 6685-00-789-2753: 5935-00-401-5758, 7510-01-141-8657, 4820-01-144-9208. Verify interchangeability with system specifications before substitution.

What are the specifications of 34FB2TM?

Key specifications for 34FB2TM: Zero Adjuster: PROVIDED; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SCALE RANGE; Operating Pressure: 20.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Thread Size and Series/type Designator: 0.250-18 NPT. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-789-2753 still in active supply?

NSN 6685-00-789-2753 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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