The Tubing,nonmetallic, cataloged under National Stock Number 4720-01-394-0549, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-394-0549 |
| Item Name | Tubing,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Measuring Method and Length | 144.000 INCHES NOMINAL OVERALL IN |
| Flexibility | FLEXIBLE |
| Material Document and Classification | MIL-R-6855, CLASS 2, GRADE 40 MIL SPEC SINGLE MATERIAL RESPONSE TUBE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.376 INCHES NOMINAL IN |
| Exterior Color | NATURAL |
| Specification/standard Data | 81349-MIL-R-6855/4 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | A TYPE AND 2 CLASS AND 40 GRADE |
| Inside Diameter | 0.250 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Material | RUBBER CHLOROPRENE CLASS CR TUBE |
| Nonmetallic Hardness Rating | 40.0 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 |
|---|---|
| 415186-1025 | 5/1 Secondary reference U.S. Government activity |
| MIL-R-6855/4 | 5/9 Secondary reference U.S. Government activity |
| M6855/4-08L105 | 2/2 Government specification standardization U.S. Government activity |
| MIL-PRF-6855/4 | 4/1 Identification reference U.S. Government activity |
NSN 4720-01-394-0549 is a Tubing,nonmetallic, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 4720-01-433-7175, 4720-01-442-2728, 4720-01-506-0161. Verify interchangeability with system specifications before substitution.
Key specifications for 4720-01-394-0549: Measuring Method and Length: 144.000 INCHES NOMINAL OVERALL IN; Flexibility: FLEXIBLE; Material Document and Classification: MIL-R-6855, CLASS 2, GRADE 40 MIL SPEC SINGLE MATERIAL RESPONSE TUBE; Cross-Sectional Shape Style: ROUND. 12 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.