The Tubing,nonmetallic, cataloged under National Stock Number 4720-01-278-8673, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4720-01-278-8673 |
| Primary Part Number | 5223027-5 |
| Item Name | Tubing,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Measuring Method and Length | 262.000 INCHES NOMINAL OVERALL IN |
| Temp Rating | -80.0 FAHRENHEIT AND 425.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flexibility | FLEXIBLE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.870 INCHES NOMINAL IN |
| Specification/standard Data | 81348-ZZ-R-765 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | 2A CLASS AND 80 GRADE A |
| Inside Diameter | 0.750 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Minimum Tensile Strength | 650 POUNDS PER SQUARE INCH LBS |
| Outer Covering Environmental Protection | HEAT RESISTANT |
| Material | RUBBER SILICONE CLASS Q TUBE |
| Nonmetallic Hardness Rating | 80.0 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 |
| Part Number | Manufacturer |
|---|---|
| 5223027-5 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
| Reference | Meaning |
|---|---|
| 5223027-5 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 5223027 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4720-01-278-8673 is a Tubing,nonmetallic, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-278-8673 has 1 manufacturer part number on file: 5223027-5 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for 5223027-5: Measuring Method and Length: 262.000 INCHES NOMINAL OVERALL IN; Temp Rating: -80.0 FAHRENHEIT AND 425.0 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.