PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T18020Spectacles,industrial

North Safety Products L.l.c. Dba North Safety Products · NSN 4240-01-227-4397 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-227-4397 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-227-4397. Primary manufacturer part number: T18020.
Features
  • Spectacles,industrial — FSC 4240
  • Lens Style: SPECIAL SHAPE
  • Plastic Front Color: GREEN, LIGHT
  • Ventilation Feature: INCLUDED
  • Front Style Designator: SADDLE BRIDGE WITH RIGID NOSE PADS
  • Lens Shape: SPECIAL
  • Color: GREEN, LIGHT
  • Side Shield: INCLUDED
Applications
  • Applications requiring Plastic Polycarbonate Shield construction
General Description

The Spectacles,industrial, cataloged under National Stock Number 4240-01-227-4397, 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 North Safety Products L.l.c. Dba North Safety Products. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4240-01-227-4397
Primary Part NumberT18020
Item NameSpectacles,industrial
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerNorth Safety Products L.l.c. Dba North Safety Products
StatusCANCELLED
Lens StyleSPECIAL SHAPE
Plastic Front ColorGREEN, LIGHT
Ventilation FeatureINCLUDED
Front Style DesignatorSADDLE BRIDGE WITH RIGID NOSE PADS
Lens ShapeSPECIAL
ColorGREEN, LIGHT
Side ShieldINCLUDED
MaterialPLASTIC POLYCARBONATE SHIELD
MaterialPLASTIC POLYCARBONATE RIM
MaterialPLASTIC POLYCARBONATE BRIDGE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
6620-00-167-283118020 INTERCHANGEABLE
Link
Ranco Inc Ranco Controls Div
5133-00-189-9265 INTERCHANGEABLE
Drill,twist
5905-00-552-2093 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
5330-00-566-0794 INTERCHANGEABLE
Seal,plain
4330-00-689-8566SA1J003H7 INTERCHANGEABLE
Filtering Disk,fluid
Emd Millipore Corp Dba Milliporesigma Div Emd Millipore Corporation
5950-00-997-2049580R264H01 INTERCHANGEABLE
Reactor
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
3040-01-192-426718020 INTERCHANGEABLE
Connecting Link,rigid
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5977-01-315-5945 INTERCHANGEABLE
Brush Set,electrical Contact
5998-01-416-7708 INTERCHANGEABLE
Pcb,ventilator,volu
5330-01-565-301718 020 INTERCHANGEABLE
Gasket
Winteb Usa, Inc
Cross-Reference Index
Part NumberManufacturer
18020 Norcross Safety Products Llc Dba North Safety (USA)
18020 Siebe North Inc North Safety Equipment Div (USA)
T18020 PRIMARY North Safety Products L.l.c. Dba North Safety Products (USA)
Related Parts
6620-00-167-2831INTERCHANGEABLE
LINK
18020
5133-00-189-9265INTERCHANGEABLE
DRILL,TWIST
5905-00-552-2093INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
5330-00-566-0794INTERCHANGEABLE
SEAL,PLAIN
4330-00-689-8566INTERCHANGEABLE
FILTERING DISK,FLUID
SA1J003H7
5950-00-997-2049INTERCHANGEABLE
REACTOR
580R264H01
3040-01-192-4267INTERCHANGEABLE
CONNECTING LINK,RIGID
18020
5977-01-315-5945INTERCHANGEABLE
BRUSH SET,ELECTRICAL CONTACT
5998-01-416-7708INTERCHANGEABLE
PCB,VENTILATOR,VOLU
5330-01-565-3017INTERCHANGEABLE
GASKET
18 020

Frequently Asked Questions

What is NSN 4240-01-227-4397?

NSN 4240-01-227-4397 is a Spectacles,industrial, manufactured by North Safety Products L.l.c. Dba North Safety Products, classified under FSC 4240 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4240-01-227-4397?

NSN 4240-01-227-4397 has 3 cross-referenced part numbers: 18020 (Norcross Safety Products Llc Dba North Safety), 18020 (Siebe North Inc North Safety Equipment Div), T18020 (North Safety Products L.l.c. Dba North Safety Products).

What NSN replaces 4240-01-227-4397?

There are 10 known substitutes for 4240-01-227-4397: 6620-00-167-2831, 5133-00-189-9265, 5905-00-552-2093 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T18020?

Key specifications for T18020: Lens Style: SPECIAL SHAPE; Plastic Front Color: GREEN, LIGHT; Ventilation Feature: INCLUDED; Front Style Designator: SADDLE BRIDGE WITH RIGID NOSE PADS. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4240-01-227-4397 still in active supply?

NSN 4240-01-227-4397 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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