The Housing,outer Round, cataloged under National Stock Number 3655-01-289-3690, 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 Cv International, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3655-01-289-3690 |
| Primary Part Number | 600021 |
| Item Name | Housing,outer Round |
| FSC / FSG | 3655 / 36 — Gas Generating and Dispensing Systems, Fixed or Mobile |
| Manufacturer | Cv International, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | HOUSING OD 12.50 IN.,HOUSING ID 12.374 IN.; FLANGE ID 10.75 IN.; THK. ON FLANGE AND HOUSING .063 IN.; MATL AL-ALY-SHEET,QQ-A-250/11; T.O. 37C2-8-28-1; LOX CLEANED AND PACKAGED 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 |
|---|---|
| 600021 PRIMARY | Cv International, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 8771797 | D/9 Drawing number reference only U.S. Government activity |
| 8771797-20 | 5/9 Secondary reference U.S. Government activity |
NSN 3655-01-289-3690 is a Housing,outer Round, manufactured by Cv International, Inc., classified under FSC 3655, Gas Generating and Dispensing Systems, Fixed or Mobile. Status: active.
NSN 3655-01-289-3690 has 1 manufacturer part number on file: 600021 (Cv International, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 5910-01-346-0766, 4730-01-586-8803, 4820-01-615-0100. Verify interchangeability with system specifications before substitution.
Key specifications for 600021: General Characteristics Item Description: HOUSING OD 12.50 IN.,HOUSING ID 12.374 IN.; FLANGE ID 10.75 IN.; THK. ON FLANGE AND HOUSING .063 IN.; MATL AL-ALY-SHEET,QQ-A-250/11; T.O. 37C2-8-28-1; LOX CLEANED AND PACKAGED IN; End Item Identification: 3655-01-223-3313 MULTIPLE SERVICE UNIT,LIQUID OXYGEN. 1 specification is 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.