The Sonobuoy, cataloged under National Stock Number 5845-01-629-8534, is classified within Federal Supply Class 5845 (Underwater Sound Equipment) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Undersea Sensor Systems, Inc. Div Ultra Maritime. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5845-01-629-8534 |
| Primary Part Number | USSI-101B |
| Item Name | Sonobuoy |
| FSC / FSG | 5845 / 58 — Underwater Sound Equipment |
| Manufacturer | Undersea Sensor Systems, Inc. Div Ultra Maritime |
| Status | ACTIVE |
| Precious Material | SILVER |
| Supplementary Features | SLC LAU-126/A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 90140A-801 | Erapsco Dba Sonobuoy Tech Sensor Systems, Inc (USA) |
| USSI-101B PRIMARY | Undersea Sensor Systems, Inc. Div Ultra Maritime (USA) |
| ER101B-802 | Erapsco Dba Sonobuoy Tech Sensor Systems, Inc (USA) |
NSN 5845-01-629-8534 is a Sonobuoy, manufactured by Undersea Sensor Systems, Inc. Div Ultra Maritime, classified under FSC 5845, Underwater Sound Equipment. Status: active.
NSN 5845-01-629-8534 has 3 manufacturer part numbers on file: 90140A-801 (Erapsco Dba Sonobuoy Tech Sensor Systems, Inc), USSI-101B (Undersea Sensor Systems, Inc. Div Ultra Maritime), ER101B-802 (Erapsco Dba Sonobuoy Tech Sensor Systems, Inc).
Key specifications for USSI-101B: Precious Material: SILVER; Supplementary Features: SLC LAU-126/A; Special Features: AIR DEPLOYABLE ACTIVE RECEIVER,HELO COMPATIBLE PARACHUTE W/G-3 ENVELOPE.OP DEPTHS 0F 65,300,175 AND 500 FT.,5 WATT TRANSMITTER,GPS. FT. 2 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 5845-01-629-8534 has DEMIL Code G. 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.