The Tubing Assembly,nonmetallic, cataloged under National Stock Number 4720-01-281-6746, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-281-6746 |
| Primary Part Number | 740792 |
| Item Name | Tubing Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Inside Surface Condition | SMOOTH |
| 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 |
|---|---|
| 740792 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 740792 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4720-01-281-6746 is a Tubing Assembly,nonmetallic, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-281-6746 has 1 manufacturer part number on file: 740792 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
1 possible match (shared part number, not a government interchangeability claim): 6515-01-493-9026. Verify interchangeability with system specifications before substitution.
Key specifications for 740792: Inside Surface Condition: SMOOTH. 1 specification is 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.