The Spectacles,industrial, cataloged under National Stock Number 4240-01-300-8151, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Western Optical Corp Instrument Div. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-300-8151 |
| Primary Part Number | F2050AF-S 50X22 511AM CLR GLASS |
| Item Name | Spectacles,industrial |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Western Optical Corp Instrument Div |
| Status | ACTIVE |
| Plastic Front Color | AMBER |
| Temple Section Style Designator | CONVENTIONAL ANGLE |
| Nose Shield | NOT INCLUDED |
| Bridge Cover | NOT INCLUDED |
| Lens Color | CLEAR |
| Diameter | 50.0 MILLIMETERS NOMINAL MM |
| Lens Style | S-7 |
| Spare Lens | NOT INCLUDED |
| Temple Core | NOT INCLUDED |
| Headband | NOT PROVIDED |
| Color | CLEAR |
| Lens Shape | STANDARD |
| Carrying Case | NOT PROVIDED |
| Front Style Designator | DOUBLE BAR BRIDGE |
| Side Shield | INCLUDED |
| Material | GLASS LENS |
| Material | PLASTIC SHIELD |
| Material | PLASTIC RIM |
| Material | PLASTIC BRIDGE |
| Material | PLASTIC TEMPLE SECTION |
| Nose Bridge Width | 22.0 MILLIMETERS NOMINAL MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| F2050AF-S 50X22 511AM CLR GLASS PRIMARY | Western Optical Corp Instrument Div (USA) |
| F2050AF-S 50X22 511AM CLR GLASS PRIMARY | Square D Co Monroe Plant (USA) |
| Reference | Meaning |
|---|---|
| A-A-1995 STY D TY II CL A | 4/1 Identification reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
NSN 4240-01-300-8151 is a Spectacles,industrial, manufactured by Western Optical Corp Instrument Div, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-300-8151 has 2 manufacturer part numbers on file: F2050AF-S 50X22 511AM CLR GLASS (Western Optical Corp Instrument Div), F2050AF-S 50X22 511AM CLR GLASS (Square D Co Monroe Plant).
2 possible matches (shared part number, not a government interchangeability claim): 4240-01-300-8152, 4240-01-300-8153. Verify interchangeability with system specifications before substitution.
Key specifications for F2050AF-S 50X22 511AM CLR GLASS: Plastic Front Color: AMBER; Temple Section Style Designator: CONVENTIONAL ANGLE; Nose Shield: NOT INCLUDED; Bridge Cover: NOT INCLUDED. 21 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.