The Marker,identification, cataloged under National Stock Number 7690-01-643-7591, is classified within Federal Supply Class 7690 (Miscellaneous Printed Matter) of the Books, Maps, and Other Publications group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 6 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 7690-01-643-7591 |
| Primary Part Number | 23W190 |
| Item Name | Marker,identification |
| FSC / FSG | 7690 / 76 — Miscellaneous Printed Matter |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Length | 10.000 INCHES NOMINAL IN |
| Inscription | HEARING PROTECTION REQUIRED IN THIS AREA |
| Marking Designation | LEGEND SINGLE SIDE |
| Basic Shape Style | RECTANGULAR |
| Usage Form | SHEET |
| Width | 7.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 23W190 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| Reference | Meaning |
|---|---|
| 83748 | 5/2 Secondary reference U.S. Government activity |
| 11B4541001 | 7/2 Vendor item drawing reference Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army |
NSN 7690-01-643-7591 is a Marker,identification, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 7690, Miscellaneous Printed Matter. Status: active.
NSN 7690-01-643-7591 has 1 manufacturer part number on file: 23W190 (W.w. Grainger, Inc. Div Government Sales Division).
Key specifications for 23W190: Length: 10.000 INCHES NOMINAL IN; Inscription: HEARING PROTECTION REQUIRED IN THIS AREA; Marking Designation: LEGEND SINGLE SIDE; Basic Shape Style: RECTANGULAR. 6 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.