PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

44B3721-26BTachometer,mechanical,fixed Moun

Carrier Corp · NSN 6680-00-838-9281 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-838-9281 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-838-9281. Primary manufacturer part number: 44B3721-26B.
Features
  • Tachometer,mechanical,fixed Moun — FSC 6680
  • 7 verified cross-references
  • Primary manufacturer: Carrier Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Tachometer,mechanical,fixed Moun, cataloged under National Stock Number 6680-00-838-9281, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Carrier Corp. This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameTachometer,mechanical,fixed Moun
FSC / FSG6680 — No Item Name Available (FSG 66)
ManufacturersSolartron Electronics Inc Weston Instruments Div (CAGE 65092); Metermaster Inc Metermod Div (CAGE 27197); Carrier Corp (CAGE 10855); Elliott Company Div Jeannette (CAGE 72957); Custom Metering Company Inc (CAGE 28304)
Technical Specifications
ParameterValue
NSN6680-00-838-9281
Primary Part Number44B3721-26B
Item NameTachometer,mechanical,fixed Moun
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerCarrier Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-078-0281954 INTERCHANGEABLE
Seal
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
3110-00-100-03750211588-9 INTERCHANGEABLE
Cup,tapered Roller Bearing
Agco Corp Parts Opn
5960-00-114-3880 INTERCHANGEABLE
Electron Tube
5975-00-242-6429 INTERCHANGEABLE
Chase Nipple,conduit
5330-00-350-6532 INTERCHANGEABLE
Gasket
4410-00-378-0110731 INTERCHANGEABLE
Indicator Assemblyx
Robert H Wager Co Inc
5120-00-490-4282 INTERCHANGEABLE
Puller,mechanical
6625-00-553-1442SC-D-108747 INTERCHANGEABLE
Lead Set,test
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5960-00-617-8960954 INTERCHANGEABLE
Electron Tube
L3 Technologies, Inc. Div Communication Systems-East
6210-00-635-381281-5073ISSUE3PT2 INTERCHANGEABLE
Light,indicator
Raytheon Company Dba Raytheon Co
Cross-Reference Index
Part NumberManufacturer
954 Solartron Electronics Inc Weston Instruments Div (USA)
MMIL0225P Metermaster Inc Metermod Div (USA)
954FD Solartron Electronics Inc Weston Instruments Div (USA)
268488 Solartron Electronics Inc Weston Instruments Div (USA)
44B3721-26B PRIMARY Carrier Corp (USA)
44B3721-26B Elliott Company Div Jeannette (USA)
MMIL0225P Custom Metering Company Inc (USA)
Related Parts
5330-00-078-0281INTERCHANGEABLE
SEAL
954
3110-00-100-0375INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
0211588-9
5960-00-114-3880INTERCHANGEABLE
ELECTRON TUBE
5975-00-242-6429INTERCHANGEABLE
CHASE NIPPLE,CONDUIT
5330-00-350-6532INTERCHANGEABLE
GASKET
4410-00-378-0110INTERCHANGEABLE
INDICATOR ASSEMBLYX
731
5120-00-490-4282INTERCHANGEABLE
PULLER,MECHANICAL
6625-00-553-1442INTERCHANGEABLE
LEAD SET,TEST
SC-D-108747
5960-00-617-8960INTERCHANGEABLE
ELECTRON TUBE
954
6210-00-635-3812INTERCHANGEABLE
LIGHT,INDICATOR
81-5073ISSUE3PT2
6145-00-845-5956INTERCHANGEABLE
WIRE,ELECTRICAL
5935-01-031-5979INTERCHANGEABLE
MAINTENANCE KIT,ELECTRICAL CONNE
954

Frequently Asked Questions

What is NSN 6680-00-838-9281?

NSN 6680-00-838-9281 is a Tachometer,mechanical,fixed Moun, manufactured by Carrier Corp, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-838-9281?

NSN 6680-00-838-9281 has 7 cross-referenced part numbers: 954 (Solartron Electronics Inc Weston Instruments Div), MMIL0225P (Metermaster Inc Metermod Div), 954FD (Solartron Electronics Inc Weston Instruments Div), 268488 (Solartron Electronics Inc Weston Instruments Div), 44B3721-26B (Carrier Corp) and 2 more.

What NSN replaces 6680-00-838-9281?

There are 12 known substitutes for 6680-00-838-9281: 5330-00-078-0281, 3110-00-100-0375, 5960-00-114-3880 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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