The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-00-649-7388, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 13 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through both NSN and commercial part number lookups. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-649-7388 |
| Primary Part Number | AA59326/2-9-A |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | CANCELLED |
| Connection Style | BARBED OR SERRATED END ALL ENDS |
| Nominal Inside Diameter Hose Accommodated | 4.000 INCHES ALL ENDS IN |
| Mating End Identification | O P W CORP,FEMALE ADAPTER PART NO.633DS,4 IN.SIZE IN |
| Connection Type | UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION |
| Connection Type | INTERNAL QUICK DISCONNECT ALL ENDS |
| Style Designator | MALE COUPLING HALF |
| Quick Disconnect Nominal Size | 4.312 INCHES ALL ENDS IN |
| Leg Length | 4.250 INCHES MINIMUM IN |
| Features Provided | SELF-SEALING |
| Specification/standard Data | 96906-MS27021 GOVERNMENT STANDARD |
| Surface Treatment | ANODIZE BODY |
| Material | ALUMINUM ALLOY BODY |
| Quick Disconnect Method | CAM-LOCKING ALL ENDS |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AA59326/2-9-A | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| Reference | Meaning |
|---|---|
| 633-E-4IN-AL | 5/9 Secondary reference U.S. Government activity |
| 400-E-AL | 5/1 Secondary reference Dvcc, Llc |
| MS27021-17 | 5/9 Secondary reference U.S. Government activity |
| 633E-4AL | 5/1 Secondary reference U.S. Government activity |
| AA59326II19 | 5/9 Secondary reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| 4730006497388 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 44270 | 5/9 Secondary reference U.S. Government activity |
| A-A-59326/2 | 4/1 Identification reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| AA59326/2B-9-A-1 | E/8 Replaced / superseded reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| 4E | 5/9 Secondary reference U.S. Government activity |
| 5590K18 | 5/1 Secondary reference Mcmaster-Carr Supply Co |
| 400-E-AL | 5/9 Secondary reference Parker Hannifin Canada Div Fluid Connectors Canada |
| MCD4125ITEM6 | 5/9 Secondary reference U.S. Government activity |
| 633-E-4IN-AL | 5/9 Secondary reference Dover Resources Inc Dba Opw Engineered Systems |
| 633E-4AL | 5/9 Secondary reference Dover Resources Inc Dba Opw Engineered Systems |
NSN 4730-00-649-7388 is a Coupling Half,quick Disconnect, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: cancelled.
NSN 4730-00-649-7388 has 1 manufacturer part number on file: AA59326/2-9-A (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).
4 possible matches (shared part number, not a government interchangeability claim): 4730-00-873-4535, 4730-00-938-7996, 4730-00-949-8291. Verify interchangeability with system specifications before substitution.
Key specifications for AA59326/2-9-A: Connection Style: BARBED OR SERRATED END ALL ENDS; Nominal Inside Diameter Hose Accommodated: 4.000 INCHES ALL ENDS IN; Mating End Identification: O P W CORP,FEMALE ADAPTER PART NO.633DS,4 IN.SIZE IN; Connection Type: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION. 13 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 4730-00-649-7388 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.