The Lens,helmet,welder's, cataloged under National Stock Number 4240-00-540-2421, 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 Sperian Eye & Face Protection, Inc.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4240-00-540-2421 |
| Primary Part Number | WILLSON WELD 11 |
| Item Name | Lens,helmet,welder's |
| FSC / FSG | 4240 / 42 — No Item Name Available |
| Manufacturer | Sperian Eye & Face Protection, Inc. |
| Status | CANCELLED |
| Departure From Cited Designator | AS MODIFIED BY NATIONAL BUREAU OF STANDARDS SHADE NUMBER |
| Material | GLASS OR PLASTIC |
| Lens Type | FILTER |
| National Bureau of Standards Shade Number | CO-BS 11 |
| Nondefinitive Spec/std Data | A STYLE AND III TYPE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| WILLSON WELD 11 | Sperian Eye & Face Protection, Inc. (USA) |
| WILLSON WELD NO. 11 | Honeywell Safety Products Usa, Inc. (USA) |
| GLENDALE NO. 11 | Glendale Protective Technologies, Inc. (USA) |
| MONARCH NO. 11 | Fibre-Metal Products Co Inc (USA) |
| CESCOWELD NO. 11 | Cesco Safety Products (USA) |
| GGG-H-211 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| NORTON MH 11 | Siebe North Inc North Safety Equipment Div (USA) |
| FILTER WELD NO. 11 | Aearo Company (USA) |
| M11 | Siebe North Inc North Safety Equipment Div (USA) |
| WILLSON WELD NO. 11 | Dalloz Safety (USA) |
| 50P/11 | North Safety Products L.l.c. Dba North Safety Products (USA) |
NSN 4240-00-540-2421 is a Lens,helmet,welder's, manufactured by Sperian Eye & Face Protection, Inc., classified under FSC 4240 (No Item Name Available). Status: cancelled.
NSN 4240-00-540-2421 has 11 cross-referenced part numbers: WILLSON WELD 11 (Sperian Eye & Face Protection, Inc.), WILLSON WELD NO. 11 (Honeywell Safety Products Usa, Inc.), GLENDALE NO. 11 (Glendale Protective Technologies, Inc.), MONARCH NO. 11 (Fibre-Metal Products Co Inc), CESCOWELD NO. 11 (Cesco Safety Products) and 6 more.
There are 12 known substitutes for 4240-00-540-2421: 5895-00-005-0154, 5930-00-126-2615, 7490-00-322-5615 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for WILLSON WELD 11: Departure From Cited Designator: AS MODIFIED BY NATIONAL BUREAU OF STANDARDS SHADE NUMBER; Overall Width: 2.000 INCHES NOMINAL IN; Material: GLASS OR PLASTIC; Lens Type: FILTER. 7 total characteristics are documented in the Federal Logistics Information System.
NSN 4240-00-540-2421 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.