The Hose,nonmetallic, cataloged under National Stock Number 4720-01-229-9688, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Empire Abrasive Equipment Co Lp. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-229-9688 |
| Primary Part Number | 521331 |
| Item Name | Hose,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Empire Abrasive Equipment Co Lp |
| Status | ACTIVE |
| Cross-Sectional Shape Style | ROUND |
| Exterior Color | BLACK |
| Inside Diameter | 0.500 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | RUBBER TUBE |
| 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 |
|---|---|
| 521331 PRIMARY | Empire Abrasive Equipment Co Lp (USA) |
| Reference | Meaning |
|---|---|
| 521351 | 5/9 Secondary reference Empire Abrasive Equipment Co Lp |
NSN 4720-01-229-9688 is a Hose,nonmetallic, manufactured by Empire Abrasive Equipment Co Lp, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-229-9688 has 1 manufacturer part number on file: 521331 (Empire Abrasive Equipment Co Lp).
1 possible match (shared part number, not a government interchangeability claim): 5962-01-347-3457. Verify interchangeability with system specifications before substitution.
Key specifications for 521331: Cross-Sectional Shape Style: ROUND; Exterior Color: BLACK; Inside Diameter: 0.500 INCHES NOMINAL IN; Inside Surface Condition: SMOOTH. 6 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.