PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

392Manometer,u-Tube

Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument · NSN 6685-00-536-9243 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-536-9243 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-536-9243. Primary manufacturer part number: 392.
Features
  • Manometer,u-Tube — FSC 6685
  • Operating Pressure: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SCALE RANGE,SCALE SMALLEST INCREMENT,PARALLAX ELIMINATING FEATURE,INDICATOR TYPE,INDICATING LIQUID FOR WHICH DESIGNED,INDICATING LIQUID,MOUNTING PROVISION FOR WHICH DESIGNED,MOUNTING TYPE,AND ACCESSORY COMPONENTS AND QUANTITY
  • Mounting Type: TABLE
  • Parallax Eliminating Feature: NOT PROVIDED
  • Indicating Liquid for Which Designed: MERCURY
  • Scale Range: +0.0 TO 30.0 INCHES IN
  • Indicating Liquid: PROVIDED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Manometer,u-Tube, cataloged under National Stock Number 6685-00-536-9243, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-536-9243
Primary Part Number392
Item NameManometer,u-Tube
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerScott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument
StatusCANCELLED
Operating Pressure250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY SCALE RANGE,SCALE SMALLEST INCREMENT,PARALLAX ELIMINATING FEATURE,INDICATOR TYPE,INDICATING LIQUID FOR WHICH DESIGNED,INDICATING LIQUID,MOUNTING PROVISION FOR WHICH DESIGNED,MOUNTING TYPE,AND ACCESSORY COMPONENTS AND QUANTITY
Mounting TypeTABLE
Parallax Eliminating FeatureNOT PROVIDED
Indicating Liquid for Which DesignedMERCURY
Scale Range+0.0 TO 30.0 INCHES IN
Indicating LiquidPROVIDED
Connection Facility TypeINTERNAL
Equalizing ValveNOT PROVIDED
Control ValveNOT PROVIDED
Connection LocationOUT OF EACH SIDE OF MANOMETER HEAD
Thread Size and Series/type Designator0.250-18 NPT
Zero AdjusterPROVIDED
Indicator TypeONE LIQUID
Connection TypeTHREADED
Accessory Components and QuantityMTG TABLE NO. 912A 1 A
Scale Smallest Increment0.1 INCHES IN
Mounting Provision for Which DesignedBASE AND TABLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
6685-00-527-7262 INTERCHANGEABLE
Manometer,u-Tube
6685-00-566-867310AA25TM-50 INTERCHANGEABLE
Manometer,u-Tube
Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument
6685-00-601-598210AA25WM6 SCALE A INTERCHANGEABLE
Manometer,u-Tube
Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument
6685-00-813-5527ZS10AA25WM15 INTERCHANGEABLE
Manometer,u-Tube
Western/scott Fetzer Company
6685-00-848-635310AA25WM20 INTERCHANGEABLE
No Item Name Available
Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument
5305-01-122-0254 INTERCHANGEABLE
Screw,cap,hexagon Head
5995-01-530-4220B1103 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Lockheed Martin Corporation Div Rms - Manassas
Cross-Reference Index
Part NumberManufacturer
392 Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument (USA)
10AA25TM Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument (USA)
B1103 Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument (USA)
ZS10AA25WM30 Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument (USA)
Z10AA25WM-30 Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument (USA)
Related Parts
6685-00-527-7262INTERCHANGEABLE
MANOMETER,U-TUBE
6685-00-566-8673INTERCHANGEABLE
MANOMETER,U-TUBE
10AA25TM-50
6685-00-601-5982INTERCHANGEABLE
MANOMETER,U-TUBE
10AA25WM6 SCALE A
6685-00-813-5527INTERCHANGEABLE
MANOMETER,U-TUBE
ZS10AA25WM15
6685-00-848-6353INTERCHANGEABLE
NO ITEM NAME AVAILABLE
10AA25WM20
5305-01-122-0254INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5995-01-530-4220INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
B1103

Frequently Asked Questions

What is NSN 6685-00-536-9243?

NSN 6685-00-536-9243 is a Manometer,u-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 6685-00-536-9243?

NSN 6685-00-536-9243 has 5 cross-referenced part numbers: 392 (Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument), 10AA25TM (Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument), B1103 (Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument), ZS10AA25WM30 (Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument), Z10AA25WM-30 (Scott Fetzer Company, the Dba Meriam Process Technologies Div Meriam Instrument).

What NSN replaces 6685-00-536-9243?

There are 7 known substitutes for 6685-00-536-9243: 6685-00-527-7262, 6685-00-566-8673, 6685-00-601-5982 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 392?

Key specifications for 392: Operating Pressure: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SCALE RANGE,SCALE SMALLEST INCREMENT,PARALLAX ELIMINATING FEATURE,INDICATOR TYPE,INDICATING LIQUID FOR WHICH DESIGNED,INDICATING LIQUID,MOUNTING PROVISION FOR WHICH DESIGNED,MOUNTING TYPE,AND ACCESSORY COMPONENTS AND QUANTITY; Mounting Type: TABLE; Parallax Eliminating Feature: NOT PROVIDED. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-536-9243 still in active supply?

NSN 6685-00-536-9243 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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