The Tubing,nonmetallic, cataloged under National Stock Number 4720-01-528-7573, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Meridian Industries, Inc Dba Kent Elastomer Products. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-528-7573 |
| Primary Part Number | BL503 |
| Item Name | Tubing,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Meridian Industries, Inc Dba Kent Elastomer Products |
| Status | ACTIVE |
| Flexibility | FLEXIBLE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.210 INCHES NOMINAL IN |
| Exterior Color | BLACK |
| Inside Diameter | 0.160 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| 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 |
|---|---|
| BL503 PRIMARY | Meridian Industries, Inc Dba Kent Elastomer Products (USA) |
| Reference | Meaning |
|---|---|
| 3307264 | D/9 Drawing number reference only U.S. Government activity |
| 3307264-3 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4720-01-528-7573 is a Tubing,nonmetallic, manufactured by Meridian Industries, Inc Dba Kent Elastomer Products, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-528-7573 has 1 manufacturer part number on file: BL503 (Meridian Industries, Inc Dba Kent Elastomer Products).
Key specifications for BL503: Flexibility: FLEXIBLE; Cross-Sectional Shape Style: ROUND; Outside Diameter: 0.210 INCHES NOMINAL IN; Exterior Color: BLACK. 7 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.