The Hose Assembly,metallic, cataloged under National Stock Number 4720-01-330-6557, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Ohio Hydraulics Inc. Government technical data includes 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-330-6557 |
| Primary Part Number | OH23051381 |
| Item Name | Hose Assembly,metallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Ohio Hydraulics Inc |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES SECOND END |
| Measuring Method and Length | 24.380 INCHES NOMINAL WORKING IN |
| Minimum Inside Bending Radius | 12.000 INCHES IN |
| Connection Style | RAISED SECOND END |
| Connection Style | RAISED FIRST END |
| End Connection Design | ELBOW SECOND END |
| End Connection Design | STRAIGHT FIRST END |
| Layer Composition and Location | OUTER LAYER BRAIDED CORROSION RESISTANT STEEL WIRE |
| Connection Type | RAISED FACE FLANGE FIRST END |
| Connection Type | RAISED FACE FLANGE SECOND END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 2.790 INCHES NOMINAL IN |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Inside Diameter | 2.000 INCHES NOMINAL IN |
| Raised Face Diameter | 3.630 INCHES NOMINAL FIRST END IN |
| Burst Test Pressure | 1600.0 POUNDS PER SQUARE INCH LBS |
| Flange Style | ROUND W / BOLT HOLES FIRST END |
| Flange Style | ROUND W / BOLT HOLES SECOND END |
| End Flange Construction | SOLID SECOND END |
| End Flange Construction | SOLID FIRST END |
| Inner Conveying Tube Style | ANNULAR OPEN-PITCH CORRUGATED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| OH23051381 PRIMARY | Ohio Hydraulics Inc (USA) |
| Reference | Meaning |
|---|---|
| 23051381 | 7/2 Vendor item drawing reference Rolls-Royce Corporation |
NSN 4720-01-330-6557 is a Hose Assembly,metallic, manufactured by Ohio Hydraulics Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-330-6557 has 1 manufacturer part number on file: OH23051381 (Ohio Hydraulics Inc).
Key specifications for OH23051381: Flow Angle: 90.0 DEGREES SECOND END; Measuring Method and Length: 24.380 INCHES NOMINAL WORKING IN; Minimum Inside Bending Radius: 12.000 INCHES IN; Connection Style: RAISED SECOND END. 21 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.
NSN 4720-01-330-6557 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.