The Spectacles,industrial, cataloged under National Stock Number 4240-01-299-7831, 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 Square D Co Monroe Plant. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-299-7831 |
| Primary Part Number | F2050AF-S 50X24 511AM CLR GLASS |
| Item Name | Spectacles,industrial |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Square D Co Monroe Plant |
| 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 | 24.0 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 50X24 511AM CLR GLASS PRIMARY | Square D Co Monroe Plant (USA) |
| F2050AF-S 50X24 511AM CLR GLASS PRIMARY | Western Optical Corp Instrument Div (USA) |
| Reference | Meaning |
|---|---|
| A-A-1995 Y II,CL A, STY D | 4/1 Identification reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
NSN 4240-01-299-7831 is a Spectacles,industrial, manufactured by Square D Co Monroe Plant, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-299-7831 has 2 manufacturer part numbers on file: F2050AF-S 50X24 511AM CLR GLASS (Square D Co Monroe Plant), F2050AF-S 50X24 511AM CLR GLASS (Western Optical Corp Instrument Div).
Key specifications for F2050AF-S 50X24 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.