The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-00-122-4962, 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 Brown Helicopter, Inc. Dba Brown Helicopter Inc. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-122-4962 |
| Primary Part Number | 591-39 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Brown Helicopter, Inc. Dba Brown Helicopter Inc |
| Status | ACTIVE |
| Connection Style | PLAIN ALL ENDS |
| Style Designator | MALE COUPLING HALF |
| Quick Disconnect Nominal Size | 0.562 INCHES ALL ENDS IN |
| Leg Length | 0.400 INCHES NOMINAL IN |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Maximum Operating Temp | 300.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Maximum Operating Temp | 300.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Surface Treatment | CADMIUM OR ZINC BODY |
| Material | STEEL BODY |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Thread Series Designator | NPSF 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 |
|---|---|
| 591-39 | Brown Helicopter, Inc. Dba Brown Helicopter Inc (USA) |
| 10865915 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 10863220 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 591-39 | 5/9 Secondary reference U.S. Government activity |
| 4730001224962 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 8906-055 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4730-00-122-4962 is a Coupling Half,quick Disconnect, manufactured by Brown Helicopter, Inc. Dba Brown Helicopter Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-122-4962 has 2 manufacturer part numbers on file: 591-39 (Brown Helicopter, Inc. Dba Brown Helicopter Inc), 10865915 (U S Army Tank Automotive Command Amsta-Im-Mm).
5 possible matches (shared part number, not a government interchangeability claim): 4730-00-800-2828, 6605-01-355-4743, 5340-01-446-0300. Verify interchangeability with system specifications before substitution.
Key specifications for 591-39: Connection Style: PLAIN ALL ENDS; Style Designator: MALE COUPLING HALF; Overall Length: 1.320 INCHES NOMINAL IN; Quick Disconnect Nominal Size: 0.562 INCHES ALL ENDS IN. 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.