The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-00-818-9948, 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 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution. Government technical data includes 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-818-9948 |
| Primary Part Number | 3305-12 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY |
| Connection Style | FLARELESS ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION |
| Connection Type | INTERNAL QUICK DISCONNECT ALL ENDS |
| Style Designator | MALE COUPLING HALF |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES ALL ENDS IN |
| Quick Disconnect Nominal Size | 1.000 INCHES ALL ENDS IN |
| Leg Length | 1.250 INCHES MINIMUM IN |
| Nominal Thread Size | 1.062 INCHES ALL ENDS IN |
| Seat Angle | 12.0 DEGREES |
| Surface Treatment | ANODIZE BODY |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Material | ALUMINUM ALLOY BODY |
| Quick Disconnect Method | TWIST-LOCK ALL ENDS |
| Thread Series Designator | UN 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 |
|---|---|
| 3305-12 PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| Reference | Meaning |
|---|---|
| 5189339 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 4730PL0976280 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 668430-7 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-00-818-9948 is a Coupling Half,quick Disconnect, manufactured by Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-818-9948 has 1 manufacturer part number on file: 3305-12 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-083-2847. Verify interchangeability with system specifications before substitution.
Key specifications for 3305-12: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY; Connection Style: FLARELESS ALL ENDS; Connection Type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION; Connection Type: INTERNAL QUICK DISCONNECT ALL ENDS. 17 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.