The Coupling Half,self-Sealing, cataloged under National Stock Number 4730-01-370-4903, 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 Schroeder Industries Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-370-4903 |
| Primary Part Number | 2301-01-53.00 |
| Item Name | Coupling Half,self-Sealing |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Schroeder Industries Llc |
| Status | ACTIVE |
| Nominal Thread Size | 0.562 INCHES ALL ENDS IN |
| Material | STEEL CORROSION RESISTING BODY |
| 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 |
|---|---|
| 2301-01-53.00 PRIMARY | Schroeder Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| H6158001 | D/9 Drawing number reference only U.S. Government activity |
| H6158001 ITEM 232 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-370-4903 is a Coupling Half,self-Sealing, manufactured by Schroeder Industries Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-370-4903 has 1 manufacturer part number on file: 2301-01-53.00 (Schroeder Industries Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-371-1265. Verify interchangeability with system specifications before substitution.
Key specifications for 2301-01-53.00: Nominal Thread Size: 0.562 INCHES ALL ENDS IN; Material: STEEL CORROSION RESISTING BODY. 2 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.