The Test Set,underwater Mine, cataloged under National Stock Number 4923-01-258-0245, is classified within Federal Supply Class 4923 (Depth Charges and Underwater Mines Maintenance, Repair, and Checkout Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4923-01-258-0245 |
| Primary Part Number | 6169100 |
| Item Name | Test Set,underwater Mine |
| FSC / FSG | 4923 / 49 — Depth Charges and Underwater Mines Maintenance, Repair, and Checkout Specialized Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Model Number | MK 408 MOD 0 |
| Unpackaged Unit Length | 21.000 INCHES NOMINAL IN |
| Portability Method | HINGED EXTERNAL HANDLES |
| Security Classification | UNCLASSIFIED |
| Unpackaged Unit Width | 22.000 INCHES NOMINAL IN |
| Unpackaged Unit Height | 20.000 INCHES NOMINAL IN |
| Special Markings | DELICATE INSTRUMENT HANDLE WITH CARE |
| Usage Design | USED ON FIRING MECHANISM MK 26 F/MINES MK 56/57 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6169100 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| MK 408-2 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4923-01-258-0245 is a Test Set,underwater Mine, manufactured by Naval Sea Systems Command, classified under FSC 4923, Depth Charges and Underwater Mines Maintenance, Repair, and Checkout Specialized Equipment. Status: active.
NSN 4923-01-258-0245 has 1 manufacturer part number on file: 6169100 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 1336-01-549-0284. Verify interchangeability with system specifications before substitution.
Key specifications for 6169100: Model Number: MK 408 MOD 0; Unpackaged Unit Length: 21.000 INCHES NOMINAL IN; Portability Method: HINGED EXTERNAL HANDLES; Security Classification: UNCLASSIFIED. 8 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.
NSN 4923-01-258-0245 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.