PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5-2-998Outsert,eyelens

Edgewood Chemical Biological Center Ecbc · NSN 4240-00-678-0731 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-00-678-0731 — this item is cataloged by the U.S. Government under National Stock Number 4240-00-678-0731. Primary manufacturer part number: 5-2-998.
Features
  • Outsert,eyelens — FSC 4240
  • General Characteristics Item Description: C/O PLASTIC LENS;RUBBER MOUNTING RING;ALUMINUM CRIMPING RING
  • 1 verified cross-reference
  • Primary manufacturer: Edgewood Chemical Biological Center Ecbc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Outsert,eyelens, cataloged under National Stock Number 4240-00-678-0731, is classified within Federal Supply Class 4240 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Edgewood Chemical Biological Center Ecbc. 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4240-00-678-0731
Primary Part Number5-2-998
Item NameOutsert,eyelens
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerEdgewood Chemical Biological Center Ecbc
StatusACTIVE
General Characteristics Item DescriptionC/O PLASTIC LENS;RUBBER MOUNTING RING;ALUMINUM CRIMPING RING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
9540-00-194-9810 INTERCHANGEABLE
Angle,structural
5975-00-395-9499SM-B-148594 INTERCHANGEABLE
Plate,switch
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4820-00-486-1883557-5C INTERCHANGEABLE
Valve,check
Goodrich Corporation Dba Goodrich Corp
5930-01-316-55475299-8 INTERCHANGEABLE
Switch,push
Todd Combustion Inc
Cross-Reference Index
Part NumberManufacturer
5-2-998 PRIMARY Edgewood Chemical Biological Center Ecbc (USA)
Related Parts
9540-00-194-9810INTERCHANGEABLE
ANGLE,STRUCTURAL
5975-00-395-9499INTERCHANGEABLE
PLATE,SWITCH
SM-B-148594
4820-00-486-1883INTERCHANGEABLE
VALVE,CHECK
557-5C
5930-01-316-5547INTERCHANGEABLE
SWITCH,PUSH
5299-8

Frequently Asked Questions

What is NSN 4240-00-678-0731?

NSN 4240-00-678-0731 is a Outsert,eyelens, manufactured by Edgewood Chemical Biological Center Ecbc, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-00-678-0731?

NSN 4240-00-678-0731 has 1 cross-referenced part number: 5-2-998 (Edgewood Chemical Biological Center Ecbc).

What NSN replaces 4240-00-678-0731?

There are 4 known substitutes for 4240-00-678-0731: 9540-00-194-9810, 5975-00-395-9499, 4820-00-486-1883 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5-2-998?

Key specifications for 5-2-998: General Characteristics Item Description: C/O PLASTIC LENS;RUBBER MOUNTING RING;ALUMINUM CRIMPING RING. 1 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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