PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A2408Counter,airborne Particle

Hach Ultra Analytics Inc. Dba Pacific Scientific Instruments · NSN 6635-01-408-2347 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-01-408-2347 — this item is cataloged by the U.S. Government under National Stock Number 6635-01-408-2347. Primary manufacturer part number: A2408.
Features
  • Counter,airborne Particle — FSC 6635
  • General Characteristics Item Description: 0.3 MICRON SENSITIVITY AT 1.0 CFM FLOW RATE, UP TO SIX PARTICLE SIZE CHANNELS, SMART PRINTING, CALCULATION SIMULTANEOUSLY, MEMORY FOR 500 COUNT CYCLES OF DATA
  • 1 verified cross-reference
  • Primary manufacturer: Hach Ultra Analytics Inc. Dba Pacific Scientific Instruments
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Counter,airborne Particle, cataloged under National Stock Number 6635-01-408-2347, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Hach Ultra Analytics Inc. Dba Pacific Scientific Instruments. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6635-01-408-2347
Primary Part NumberA2408
Item NameCounter,airborne Particle
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerHach Ultra Analytics Inc. Dba Pacific Scientific Instruments
StatusACTIVE
General Characteristics Item Description0.3 MICRON SENSITIVITY AT 1.0 CFM FLOW RATE, UP TO SIX PARTICLE SIZE CHANNELS, SMART PRINTING, CALCULATION SIMULTANEOUSLY, MEMORY FOR 500 COUNT CYCLES OF DATA
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3655-00-050-9953 INTERCHANGEABLE
Nut,push Rod,exhaust
5905-00-168-8071F156 INTERCHANGEABLE
Resistor,fixed,wire Wound
Shallcross Inc
5920-00-425-2878F164 INTERCHANGEABLE
Fuse,cartridge
Shallcross Inc
5920-00-471-1440F147 INTERCHANGEABLE
Fuse,cartridge
Shallcross Inc
3110-00-516-530174164 INTERCHANGEABLE
Bearing,roller,needle
Rbc Bearings Incorporated Div West Trenton Division
Cross-Reference Index
Part NumberManufacturer
A2408 PRIMARY Hach Ultra Analytics Inc. Dba Pacific Scientific Instruments (USA)
Related Parts
3655-00-050-9953INTERCHANGEABLE
NUT,PUSH ROD,EXHAUST
5905-00-168-8071INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
F156
5920-00-425-2878INTERCHANGEABLE
FUSE,CARTRIDGE
F164
5920-00-471-1440INTERCHANGEABLE
FUSE,CARTRIDGE
F147
3110-00-516-5301INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
74164

Frequently Asked Questions

What is NSN 6635-01-408-2347?

NSN 6635-01-408-2347 is a Counter,airborne Particle, manufactured by Hach Ultra Analytics Inc. Dba Pacific Scientific Instruments, classified under FSC 6635 (No Item Name Available). Status: active.

What are the part numbers for NSN 6635-01-408-2347?

NSN 6635-01-408-2347 has 1 cross-referenced part number: A2408 (Hach Ultra Analytics Inc. Dba Pacific Scientific Instruments).

What NSN replaces 6635-01-408-2347?

There are 5 known substitutes for 6635-01-408-2347: 3655-00-050-9953, 5905-00-168-8071, 5920-00-425-2878 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A2408?

Key specifications for A2408: Overall Height: 6.000 INCHES NOMINAL IN; General Characteristics Item Description: 0.3 MICRON SENSITIVITY AT 1.0 CFM FLOW RATE, UP TO SIX PARTICLE SIZE CHANNELS, SMART PRINTING, CALCULATION SIMULTANEOUSLY, MEMORY FOR 500 COUNT CYCLES OF DATA; Overall Length: 18.000 INCHES NOMINAL IN; Overall Width: 11.200 INCHES NOMINAL IN. 4 total characteristics are documented in the Federal Logistics Information System.

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