NSN 6685-01-644-1055 · NIIN 016441055 · Part number 2051CD2A02A1AH2B2DF
Rosemount Inc Dba Emerson Process Management · FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 43CS7
Government record, cited
NSN 6685-01-644-1055 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-644-1055. Manufacturer of record part number: 2051CD2A02A1AH2B2DF.
Also searched as6685-01-644-1055 ·
6685016441055 ·
NIIN 016441055 ·
01-644-1055 ·
FSC 6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments · CAGE 43CS7 · 2051CD2A02A1AH2B2DF
Measurement Range: -250.0 TO 250.0 INCHES OF WATER IN
1 manufacturer part number on file
Manufacturer of record: Rosemount Inc Dba Emerson Process Management
Identification
NSN: 6685-01-644-1055
NIIN: 016441055
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: 2051CD2A02A1AH2B2DF
Manufacturer: Rosemount Inc Dba Emerson Process Management
General Description
The Transmitter,pressure, cataloged under National Stock Number 6685-01-644-1055, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Rosemount Inc Dba Emerson Process Management. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6685-01-644-1055
Primary Part Number
2051CD2A02A1AH2B2DF
Item Name
Transmitter,pressure
FSC / FSG
6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Manufacturer
Rosemount Inc Dba Emerson Process Management
Status
ACTIVE
Actuation Method
DIFFERENTIAL TRANSFORMER
Current Type
AC
Measurement Range
-250.0 TO 250.0 INCHES OF WATER IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Rosemount Inc Dba Emerson Process Management (USA)
No interchangeability data on file.
Other items in FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6685-00-001-1475
6685-00-001-1475 · Item name not on file
6685-00-001-1503
CONTROL,TOTALIZER
6685-00-001-1643
6685-00-001-1643 · Item name not on file
6685-00-001-1711
GAGE,PRESSURE,DIAL INDICATING
6685-00-001-2099
6685-00-001-2099 · Item name not on file
6685-00-001-2100
6685-00-001-2100 · Item name not on file
6685-00-001-2101
6685-00-001-2101 · Item name not on file
6685-00-001-2102
6685-00-001-2102 · Item name not on file
Frequently Asked Questions
What is NSN 6685-01-644-1055?
NSN 6685-01-644-1055 is a Transmitter,pressure, manufactured by Rosemount Inc Dba Emerson Process Management, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
What part numbers are listed for NSN 6685-01-644-1055?
NSN 6685-01-644-1055 has 1 manufacturer part number on file: 2051CD2A02A1AH2B2DF (Rosemount Inc Dba Emerson Process Management).
What are the specifications of 2051CD2A02A1AH2B2DF?
Key specifications for 2051CD2A02A1AH2B2DF: Actuation Method: DIFFERENTIAL TRANSFORMER; Current Type: AC; Special Features: ALUM. HOUSING, SILICONE FLUID, GLASS FILLED PTFE, 316 SST, SST DRAIN/VENT, 1/2-14 NPT ADAPTERS, ALTERNATE PROCESS CONNECTION; Part Name Assigned by Controlling Agency: COPLANAR PRESSURE TRANSMITTER. 3 specifications are documented in the U.S. Government catalog.
Is NSN 6685-01-644-1055 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.