The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-346-6305, 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 Dover Fluid Management, Inc. Div Dover Resources Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-346-6305 |
| Primary Part Number | 633E-SS20 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Dover Fluid Management, Inc. Div Dover Resources Inc. |
| Status | ACTIVE |
| Connection Style | BARBED OR SERRATED END ALL ENDS |
| Nominal Inside Diameter Hose Accommodated | 2.000 INCHES ALL ENDS IN |
| Connection Type | UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION |
| Style Designator | MALE COUPLING HALF |
| Leg Length | 2.750 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING BODY |
| Quick Disconnect Method | CAM-LOCKING ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 633E-SS20 PRIMARY | Dover Fluid Management, Inc. Div Dover Resources Inc. (USA) |
| Reference | Meaning |
|---|---|
| 633E-2SST | 5/9 Secondary reference U.S. Government activity |
| 633E-2SST | 5/9 Secondary reference Dover Fluid Management, Inc. Div Dover Resources Inc. |
| 633E-2SS | 5/9 Secondary reference Dover Resources Inc Dba Opw Engineered Systems |
| 633E2IN.SS | 5/9 Secondary reference Dover Resources Inc Dba Opw Engineered Systems |
| 633E-2SS | 5/9 Secondary reference Dover Fluid Management, Inc. Div Dover Resources Inc. |
| 633E-2SST | 5/9 Secondary reference Dover Resources Inc Dba Opw Engineered Systems |
| 12380247 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 20ESS | 3/9 Design control — primary reference U.S. Government activity |
| 633E2IN.SS | 5/9 Secondary reference U.S. Government activity |
| 633E-2SS | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-346-6305 is a Coupling Half,quick Disconnect, manufactured by Dover Fluid Management, Inc. Div Dover Resources Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-346-6305 has 1 manufacturer part number on file: 633E-SS20 (Dover Fluid Management, Inc. Div Dover Resources Inc.).
Key specifications for 633E-SS20: Connection Style: BARBED OR SERRATED END ALL ENDS; Nominal Inside Diameter Hose Accommodated: 2.000 INCHES ALL ENDS IN; Connection Type: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION; Style Designator: MALE COUPLING HALF. 7 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.
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.