The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-691-9489, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-691-9489 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | PUSH (INTERNAL) FIRST FLUID END CONNECTION |
| Connection Style | SOCKET SECOND FLUID END CONNECTION |
| Connection Type | EXTERNAL QUICK DISCONNECT FIRST FLUID END CONNECTION |
| Connection Type | UNTHREADED UNIVERSAL FITTING BOLT END SECOND FLUID END CONNECTION |
| Style Designator | FEMALE COUPLING HALF |
| Nominal Thread Size | 1.0625 INCHES ALL ENDS IN |
| Media for Which Designed | HYDRAULIC FLUID, WATER BASE SINGLE RESPONSE |
| Thread Quantity Per Inch | 12 SECOND FLUID END CONNECTION |
| Quick Disconnect Method | PUSH-PULL FIRST FLUID END CONNECTION |
| Thread Series Designator | UNF 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 |
| Reference | Meaning |
|---|---|
| FEM-621-12FO-NL | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-691-9489 is a Coupling Half,quick Disconnect, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-691-9489: Connection Style: PUSH (INTERNAL) FIRST FLUID END CONNECTION; Connection Style: SOCKET SECOND FLUID END CONNECTION; Connection Type: EXTERNAL QUICK DISCONNECT FIRST FLUID END CONNECTION; Connection Type: UNTHREADED UNIVERSAL FITTING BOLT END SECOND FLUID END CONNECTION. 10 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.