The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-031-7121, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-031-7121 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Measuring Method and Length | 23.000 INCHES NOMINAL WORKING IN |
| Temp Rating | 165.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flange Thickness | 0.620 INCHES NOMINAL FIRST END IN |
| Flange Thickness | 0.620 INCHES NOMINAL SECOND END IN |
| Minimum Inside Bending Radius | 14.000 INCHES IN |
| Connection Style | RAISED FIRST END |
| Connection Style | RAISED SWIVEL SECOND END |
| Flange Outside Diameter | 4.620 INCHES NOMINAL FIRST END IN |
| Flange Outside Diameter | 4.620 INCHES NOMINAL SECOND END IN |
| End Connection Design | STRAIGHT FIRST END |
| End Connection Design | STRAIGHT SECOND 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 |
| Bolt Hole Diameter | 0.620 INCHES NOMINAL FIRST END IN |
| Bolt Hole Diameter | 0.620 INCHES NOMINAL SECOND END IN |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 1.540 INCHES NOMINAL IN |
| Exterior Color | NATURAL |
| Inside Diameter | 1.250 INCHES NOMINAL IN |
| Inside Surface Condition | CONVOLUTED |
| Bolt Hole Quantity | 4 SECOND END |
| Bolt Hole Quantity | 4 FIRST END |
| Bolt Circle Diameter | 3.514 INCHES NOMINAL FIRST END IN |
| Bolt Circle Diameter | 3.514 INCHES NOMINAL SECOND END IN |
| Raised Face Diameter | 2.482 INCHES NOMINAL FIRST END IN |
| Raised Face Diameter | 2.530 INCHES NOMINAL SECOND END IN |
| Raised Face Height | 0.056 INCHES NOMINAL FIRST END IN |
| Raised Face Height | 0.084 INCHES NOMINAL SECOND END IN |
| Outer Covering Environmental Protection | CORROSION RESISTANT |
| 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 |
|---|---|
| 104D105-1 | 3/2 Design control — primary reference U.S. Government activity |
| 104D105 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4720-01-031-7121 is a Hose Assembly,nonmetallic, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
Key specifications for 4720-01-031-7121: Measuring Method and Length: 23.000 INCHES NOMINAL WORKING IN; Temp Rating: 165.0 FAHRENHEIT SINGLE RESPONSE DEGF; Flange Thickness: 0.620 INCHES NOMINAL FIRST END IN; Flange Thickness: 0.620 INCHES NOMINAL SECOND END IN. 30 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.