The Tubing,nonmetallic, cataloged under National Stock Number 4720-01-159-2188, 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11 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-159-2188 |
| Item Name | Tubing,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Status | ACTIVE |
| Flexibility | FLEXIBLE |
| Material Document and Classification | MIL-R-6855, CLASS 2, TYPE A, GRADE 40 MIL SPEC SINGLE MATERIAL RESPONSE TUBE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.625 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 2 CLASS AND A TYPE AND 40 GRADE |
| Inside Diameter | 0.250 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Minimum Tensile Strength | 1200 POUNDS PER SQUARE INCH LBS |
| Outer Covering Environmental Protection | OIL RESISTANT AND OZONE RESISTANT AND WEATHERPROOF AND LOW TEMPERATURE |
| 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 |
|---|---|
| MIL-PRF-6855/4 | 4/1 Identification reference U.S. Government activity |
| M6855/4-09E083 | 2/2 Government specification standardization U.S. Government activity |
| M6855/4A-09E083 | 5/9 Secondary reference U.S. Government activity |
| MILR6855CLA2TYA | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MIL-R-6855 CL2 GR50 TYA.25THK | 5/9 Secondary reference U.S. Government activity |
| MILR6855CLA2TYB | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MIL-R-6855 | 5/9 Secondary reference U.S. Government activity |
NSN 4720-01-159-2188 is a Tubing,nonmetallic, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
Key specifications for 4720-01-159-2188: Flexibility: FLEXIBLE; Material Document and Classification: MIL-R-6855, CLASS 2, TYPE A, GRADE 40 MIL SPEC SINGLE MATERIAL RESPONSE TUBE; Cross-Sectional Shape Style: ROUND; Outside Diameter: 0.625 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.