The Interconnecting Box, cataloged under National Stock Number 5975-01-520-5257, is classified within Federal Supply Class 5975 (Electrical Hardware and Supplies) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Hiab Usa Inc. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5975-01-520-5257 |
| Primary Part Number | 380-5921 |
| Item Name | Interconnecting Box |
| FSC / FSG | 5975 / 59 — Electrical Hardware and Supplies |
| Manufacturer | Hiab Usa Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 4KK570 | Oshkosh Defense Llc (USA) |
| 380-5921 PRIMARY | Hiab Usa Inc (USA) |
| 370-3282 | Hiab Limited Div Government Business Operations (GBR) |
| 15012543 | Bae Systems Australia Limited (AUS) |
| Reference | Meaning |
|---|---|
| 4KK570 | 5/9 Secondary reference Oshkosh Corp |
| 370-3282 | 5/9 Secondary reference Hiab Usa Inc |
NSN 5975-01-520-5257 is a Interconnecting Box, manufactured by Hiab Usa Inc, classified under FSC 5975, Electrical Hardware and Supplies. Status: active.
NSN 5975-01-520-5257 has 4 manufacturer part numbers on file: 4KK570 (Oshkosh Defense Llc), 380-5921 (Hiab Usa Inc), 370-3282 (Hiab Limited Div Government Business Operations), 15012543 (Bae Systems Australia Limited).
Key specifications for 380-5921: End Item Identification: NSN 2320-01-495-0110 TRUCK CARGO. 0 specifications are 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.