The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-242-4573, 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 Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co (CAGE 14127); Tuthill Corp Hansen Coupling Div (CAGE 73992); Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (CAGE 00624); Oshkosh Defense Llc (CAGE 75Q65) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-242-4573 |
| Primary Part Number | K6S12 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co |
| Status | ACTIVE |
| 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 |
|---|---|
| K6S12 PRIMARY | Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co (USA) |
| 6-K-12 | Tuthill Corp Hansen Coupling Div (USA) |
| 6-K-12 PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| 3789783 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 1HA57 | 5/9 Secondary reference Oshkosh Corp |
| 3789783 | 5/9 Secondary reference Oshkosh Corp |
| 12357237-3 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
| H6-63-T12 | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division |
| H6-63-T12 | 5/9 Secondary reference U.S. Government activity |
| 12357237 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
| 12365755-11 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 12365755 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 4730-01-242-4573 is a Coupling Half,quick Disconnect, manufactured by Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-242-4573 has 4 manufacturer part numbers on file: K6S12 (Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co), 6-K-12 (Tuthill Corp Hansen Coupling Div), 6-K-12 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), 3789783 (Oshkosh Defense Llc).
6 possible matches (shared part number, not a government interchangeability claim): 4730-01-243-3539, 4730-01-243-3540, 4730-01-245-7604. Verify interchangeability with system specifications before substitution.
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.