The Lens,replacement Smoke Wiley Pt, cataloged under National Stock Number 4240-01-528-5901, 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 Wiley X, Inc. Dba Wiley X Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-528-5901 |
| Primary Part Number | 1SD |
| Item Name | Lens,replacement Smoke Wiley Pt |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Wiley X, Inc. Dba Wiley X Inc |
| Status | ACTIVE |
| Color | SMOKE |
| 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 |
|---|---|
| 1SD PRIMARY | Wiley X, Inc. Dba Wiley X Inc (USA) |
NSN 4240-01-528-5901 is a Lens,replacement Smoke Wiley Pt, manufactured by Wiley X, Inc. Dba Wiley X Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-528-5901 has 1 manufacturer part number on file: 1SD (Wiley X, Inc. Dba Wiley X Inc).
Key specifications for 1SD: Color: SMOKE; Special Features: REPLACEMENT LENS FOR WILEY PT-1 SPECTACLES (NSN 4240-01-510-7848 / 4240-01-510-7847). LENS COLOR IS SMOKE, BALLISTIC, 2.3MM THICK POLYCARBONATE, CONFORMING TO ANSI Z87.1 AND ANS Z80.3 SAFETY/OPTICAL STANDARDS. UNIT OF ISSUE IS PACKAGE OF 50. MM; Part Name Assigned by Controlling Agency: WILEY PT-1 SMOKE REPLACEMENT LENSES; End Item Identification: 4240015107848 AND 4240015107847. 1 specification is 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.