The Tubing,nonmetallic, cataloged under National Stock Number 4720-01-373-8403, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-373-8403 |
| Item Name | Tubing,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Measuring Method and Length | 72.000 INCHES NOMINAL OVERALL IN |
| Temp Rating | 212.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flexibility | FLEXIBLE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.438 INCHES NOMINAL IN |
| Specification/standard Data | 81349-MIL-R-6855 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | B TYPE AND 30 GRADE AND 4 CLASS |
| Inside Diameter | 0.375 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Outer Covering Environmental Protection | OIL RESISTANT |
| Material | RUBBER SYNTHETIC TUBE |
| Nonmetallic Hardness Rating | 30.0 NOMINAL SHORE DUROMETER A |
| 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-R-6855 | 5/9 Secondary reference U.S. Government activity |
| M6855/4-31L143 | 2/2 Government specification standardization U.S. Government activity |
| MIL-PRF-6855/4 | 4/1 Identification reference U.S. Government activity |
NSN 4720-01-373-8403 is a Tubing,nonmetallic, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
Key specifications for 4720-01-373-8403: Measuring Method and Length: 72.000 INCHES NOMINAL OVERALL IN; Temp Rating: 212.0 FAHRENHEIT SINGLE RESPONSE DEGF; Flexibility: FLEXIBLE; Cross-Sectional Shape Style: ROUND. 13 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.