The Tubing,nonmetallic, cataloged under National Stock Number 4720-00-189-9733, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-00-189-9733 |
| Item Name | Tubing,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Measuring Method and Length | 600.000 INCHES NOMINAL OVERALL IN |
| Flexibility | FLEXIBLE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.554 INCHES NOMINAL IN |
| Specification/standard Data | 81349-MIL-T-20537 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | 1 CLASS AND 3 CLASS |
| Inside Diameter | 0.188 INCHES NOMINAL IN |
| Minimum Tensile Strength | 1000 POUNDS PER SQUARE INCH LBS |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Outer Covering Environmental Protection | COLD RESISTANT AND LIGHT RESISTANT |
| Material | RUBBER SYNTHETIC TUBE |
| 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 |
|---|---|
| MIL-T-20537 | 4/1 Identification reference U.S. Government activity |
NSN 4720-00-189-9733 is a Tubing,nonmetallic, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4720-00-235-5458. Verify interchangeability with system specifications before substitution.
Key specifications for 4720-00-189-9733: Measuring Method and Length: 600.000 INCHES NOMINAL OVERALL IN; Flexibility: FLEXIBLE; Cross-Sectional Shape Style: ROUND; Outside Diameter: 0.554 INCHES NOMINAL IN. 11 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.