The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-346-8762, 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 Resources Inc Dba Opw Engineered Systems. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-346-8762 |
| Primary Part Number | 633C-SS30 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Dover Resources Inc Dba Opw Engineered Systems |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 GASKET |
| Connection Style | BARBED OR SERRATED END ALL ENDS |
| Nominal Inside Diameter Hose Accommodated | 4.000 INCHES ALL ENDS IN |
| Connection Type | UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION |
| Connection Type | INTERNAL QUICK DISCONNECT ALL ENDS |
| Style Designator | MALE COUPLING HALF |
| Material Document and Classification | ASTM A276 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Quick Disconnect Nominal Size | 4.000 INCHES ALL ENDS IN |
| Leg Length | 4.250 INCHES NOMINAL IN |
| Features Provided | SELF-SEALING |
| Material | STEEL 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 |
|---|---|
| 633C-SS30 | Dover Resources Inc Dba Opw Engineered Systems (USA) |
| 633C-4SST | Dover Fluid Management, Inc. Div Dover Resources Inc. (USA) |
| Reference | Meaning |
|---|---|
| 633C-4SST | 5/9 Secondary reference Dover Resources Inc Dba Opw Engineered Systems |
| 40CSS | 5/9 Secondary reference U.S. Government activity |
| 633C-4SST | 5/9 Secondary reference U.S. Government activity |
| 633C4-SS | 3/2 Design control — primary reference U.S. Government activity |
| 633C4-SS | 5/9 Secondary reference Dover Resources Inc Dba Opw Engineered Systems |
| 12380249 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 4730-01-346-8762 is a Coupling Half,quick Disconnect, manufactured by Dover Resources Inc Dba Opw Engineered Systems, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-346-8762 has 2 manufacturer part numbers on file: 633C-SS30 (Dover Resources Inc Dba Opw Engineered Systems), 633C-4SST (Dover Fluid Management, Inc. Div Dover Resources Inc.).
Key specifications for 633C-SS30: Furnished Items and Quantity: 1 GASKET; Connection Style: BARBED OR SERRATED END ALL ENDS; Nominal Inside Diameter Hose Accommodated: 4.000 INCHES ALL ENDS IN; Connection Type: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION. 12 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.