The Box Assembly,tool, cataloged under National Stock Number 2540-00-653-7581, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Saginaw Products Corporation Dba Cignys. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2540-00-653-7581 |
| Primary Part Number | 6537581 |
| Item Name | Box Assembly,tool |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Saginaw Products Corporation Dba Cignys |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL |
| 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 |
|---|---|
| 6537581 PRIMARY | Saginaw Products Corporation Dba Cignys (USA) |
| Reference | Meaning |
|---|---|
| 6537581 | 5/9 Secondary reference Elzee Metal Products Co Inc |
| 7435-64 | 5/9 Secondary reference Saginaw Products Corporation Dba Cignys |
| 7435-86 | 5/9 Secondary reference Saginaw Products Corporation Dba Cignys |
| 6537581 | 5/9 Secondary reference Waterbury Farrell Div of Textron Inc |
NSN 2540-00-653-7581 is a Box Assembly,tool, manufactured by Saginaw Products Corporation Dba Cignys, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-00-653-7581 has 1 manufacturer part number on file: 6537581 (Saginaw Products Corporation Dba Cignys).
1 possible match (shared part number, not a government interchangeability claim): 4720-00-733-9732. Verify interchangeability with system specifications before substitution.
Key specifications for 6537581: General Characteristics Item Description: STEEL. 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.