PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3340Humidity Alarm

Altec Air, Llc Dba Altec Llc · NSN 4440-00-489-8403 · FSC 4440 · No Item Name Available
Verified by PartsTable
NSN 4440-00-489-8403 — this item is cataloged by the U.S. Government under National Stock Number 4440-00-489-8403. Primary manufacturer part number: 3340.
Features
  • Humidity Alarm — FSC 4440
  • 1 verified cross-reference
  • Primary manufacturer: Altec Air, Llc Dba Altec Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Humidity Alarm, cataloged under National Stock Number 4440-00-489-8403, is classified within Federal Supply Class 4440 (No Item Name Available) of the Furnace, Steam, Drying, Nuclear Reactors group. The primary manufacturer of record is Altec Air, Llc Dba Altec Llc. This item has 1 commercial cross-reference from 1 manufacturer, 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 NameHumidity Alarm
FSC / FSG4440 — No Item Name Available (FSG 44)
ManufacturersAltec Air, Llc Dba Altec Llc (CAGE 06178)
Technical Specifications
ParameterValue
NSN4440-00-489-8403
Primary Part Number3340
Item NameHumidity Alarm
FSC / FSG4440 / 44 — No Item Name Available
ManufacturerAltec Air, Llc Dba Altec Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3895-00-128-2588 INTERCHANGEABLE
Roller,take-Up Craw
4810-00-146-60112192-6421-3/4 IN INTERCHANGEABLE
Valve,solenoid
Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
5330-00-189-93443340 INTERCHANGEABLE
Packing,preformed
Arrow Pneumatics Inc
5310-00-209-09013340 INTERCHANGEABLE
Washer,lock
Telemechanics Inc
2920-00-384-8957000-334-2056 INTERCHANGEABLE
Rotor,ignition Distributor
Tvh Parts Co.
3030-00-528-4522M300154 INTERCHANGEABLE
Belt,v
Mgr Equipment Corp
3110-00-623-44673340 INTERCHANGEABLE
Bearing,special Pur
General Dynamics Land Systems - Canadacorporation Div General Dynamics Mission Systems
2530-00-706-95771790857 INTERCHANGEABLE
Cylinder,hydraulic Brake,wheel
Chrysler Realty Company Llc Dba Daimler Chrysler
6930-01-144-99423340 INTERCHANGEABLE
Bezel Assembly
Kearflex Engineering Company
7490-01-221-32493340 INTERCHANGEABLE
Inserting Machine,mail
Pitney Bowes Inc.
Cross-Reference Index
Part NumberManufacturer
3340 PRIMARY Altec Air, Llc Dba Altec Llc (USA)
Related Parts
3895-00-128-2588INTERCHANGEABLE
ROLLER,TAKE-UP CRAW
4810-00-146-6011INTERCHANGEABLE
VALVE,SOLENOID
2192-6421-3/4 IN
5330-00-189-9344INTERCHANGEABLE
PACKING,PREFORMED
3340
5310-00-209-0901INTERCHANGEABLE
WASHER,LOCK
3340
2920-00-384-8957INTERCHANGEABLE
ROTOR,IGNITION DISTRIBUTOR
000-334-2056
3030-00-528-4522INTERCHANGEABLE
BELT,V
M300154
3110-00-623-4467INTERCHANGEABLE
BEARING,SPECIAL PUR
3340
2530-00-706-9577INTERCHANGEABLE
CYLINDER,HYDRAULIC BRAKE,WHEEL
1790857
6930-01-144-9942INTERCHANGEABLE
BEZEL ASSEMBLY
3340
7490-01-221-3249INTERCHANGEABLE
INSERTING MACHINE,MAIL
3340
2040-01-432-6419INTERCHANGEABLE
FLAME ARRESTER,VENTILATION-EXHAU
3-340 1-1/2IN
4320-01-579-7961INTERCHANGEABLE
RAM,HYDRAULIC
3340

Frequently Asked Questions

What is NSN 4440-00-489-8403?

NSN 4440-00-489-8403 is a Humidity Alarm, manufactured by Altec Air, Llc Dba Altec Llc, classified under FSC 4440 (No Item Name Available). Status: active.

What are the part numbers for NSN 4440-00-489-8403?

NSN 4440-00-489-8403 has 1 cross-referenced part number: 3340 (Altec Air, Llc Dba Altec Llc).

What NSN replaces 4440-00-489-8403?

There are 12 known substitutes for 4440-00-489-8403: 3895-00-128-2588, 4810-00-146-6011, 5330-00-189-9344 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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