The Conversion-Storage-Charging Unit, cataloged under National Stock Number 3655-01-601-2275, is classified within Federal Supply Class 3655 (Gas Generating and Dispensing Systems, Fixed or Mobile) of the Special Industry Machinery group. The manufacturer of record is Essex Industries Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 3655-01-601-2275 |
| Primary Part Number | 50C-0083-3 |
| Item Name | Conversion-Storage-Charging Unit |
| FSC / FSG | 3655 / 36 — Gas Generating and Dispensing Systems, Fixed or Mobile |
| Manufacturer | Essex Industries Inc |
| Status | ACTIVE |
| Unpackaged Unit Length | 22.000 INCHES NOMINAL IN |
| Unpackaged Unit Width | 18.000 INCHES NOMINAL IN |
| Unpackaged Unit Height | 24.000 INCHES NOMINAL IN |
| 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 |
|---|---|
| 50C-0083-3 PRIMARY | Essex Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 26848 | 5/1 Secondary reference U.S. Government activity |
| 3655NCM116923 | 5/1 Secondary reference Defense Medical Standardization Board |
NSN 3655-01-601-2275 is a Conversion-Storage-Charging Unit, manufactured by Essex Industries Inc, classified under FSC 3655, Gas Generating and Dispensing Systems, Fixed or Mobile. Status: active.
NSN 3655-01-601-2275 has 1 manufacturer part number on file: 50C-0083-3 (Essex Industries Inc).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-688-2540. Verify interchangeability with system specifications before substitution.
Key specifications for 50C-0083-3: Unpackaged Unit Length: 22.000 INCHES NOMINAL IN; Unpackaged Unit Width: 18.000 INCHES NOMINAL IN; Unpackaged Unit Height: 24.000 INCHES NOMINAL IN; Special Features: BACKPACK MEDICAL OXYGEN SYSTEM (BMOS) LIQUID OXYGEN (LOX) FILLING STATION; PROVIDES A MOBILE CAPABILITY FOR FILLING THE BACKPACK MEDICAL OXYGEN SYSTEM (BMOS), NSN 3655-01-598-9565; UNDER STANDARD CONDITIONS, THE BMOS SHOULD REACH CAPACITY WITHIN 5 MINUTES; 20 LIQUID LITER LOX CAPACITY; CONSTRUCTED FOR TWO PERSON CARRY; WEIGHT: APPROX. 125 LB WHEN FULL; VISUAL DISPLAY OF OXYGEN QUANTITY AND SYSTEM UNIT PRESSURE; FAST FILL PORT IAW MIL-PRF-25961(CRU-50/A); LOSES APPROX. ONE LIQUID LITER PER DAY IN STANDBY LBS. 3 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.