The Adapter,straight,pipe to Hose, cataloged under National Stock Number 4730-01-178-0677, 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10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-178-0677 |
| Item Name | Adapter,straight,pipe to Hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Connection Style | SOCKET (PIPE) FIRST END |
| Connection Style | BARBED OR BEADED (HOSE) SECOND END |
| Nominal Inside Diameter Hose Accommodated | 0.250 INCHES SECOND END IN |
| Nominal Overall Length | 2.000 INCHES IN |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Connection Type | UNTHREADED EXTERNAL HOSE SECOND END |
| Material Document and Classification | QQ-S-763,CL 304,COND A FED SPEC 1ST MATERIAL RESPONSE OVERALL |
| Operating Pressure | 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | STEEL COMP 304 OVERALL |
| 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 |
|---|---|
| 845-2445103-0350 | 3/2 Design control — primary reference U.S. Government activity |
| 845-2445103 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-178-0677 is a Adapter,straight,pipe to Hose, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-261-2507. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-178-0677: Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN; Connection Style: SOCKET (PIPE) FIRST END; Connection Style: BARBED OR BEADED (HOSE) SECOND END; Nominal Inside Diameter Hose Accommodated: 0.250 INCHES SECOND END IN. 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.