The Ladder,safety Step, cataloged under National Stock Number 5440-01-090-2693, is classified within Federal Supply Class 5440 (Scaffolding Equipment and Concrete Forms) of the Prefabricated Structures and Scaffolding group. The manufacturer of record is Louisville Ladder Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Ladder,safety Step |
| FSC / FSG | 5440 — Scaffolding Equipment and Concrete Forms (FSG 54) |
| Manufacturers | Louisville Ladder Inc (CAGE 667R1) |
| Parameter | Value |
|---|---|
| NSN | 5440-01-090-2693 |
| Primary Part Number | SW1603 |
| Item Name | Ladder,safety Step |
| FSC / FSG | 5440 / 54 — Scaffolding Equipment and Concrete Forms |
| Manufacturer | Louisville Ladder Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| SW1603 PRIMARY | Louisville Ladder Inc (USA) |
| Reference | Meaning |
|---|---|
| SW1603 | 3/9 Design control — primary reference Emerson Electric Co Louisville Ladder Div |
| 3-L-16-S | 5/9 Secondary reference Emerson Electric Co Louisville Ladder Div |
NSN 5440-01-090-2693 is a Ladder,safety Step, manufactured by Louisville Ladder Inc, classified under FSC 5440, Scaffolding Equipment and Concrete Forms. Status: active.
NSN 5440-01-090-2693 has 1 manufacturer part number on file: SW1603 (Louisville Ladder Inc).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-408-7918. Verify interchangeability with system specifications before substitution.
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.