The Tube Assembly,metal, cataloged under National Stock Number 4710-01-399-0804, is classified within Federal Supply Class 4710 (Pipe, Tube and Rigid 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4710-01-399-0804 |
| Primary Part Number | 165A575-1 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Seat Angle in Deg | 45.0 SINGLE END |
| Design Form | PREBENT |
| Mating End Quantity | 2 SINGLE END |
| Material Document and Classification | MIL-T-8606 MIL SPEC SINGLE MATERIAL RESPONSE TUBING |
| Wall Thickness | 0.035 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND SINGLE END |
| Nominal Thread Size | 0.4375 INCHES SINGLE END IN |
| End Connection Style | FLARE SINGLE END |
| Tube Outside Diameter | 0.250 INCHES NOMINAL IN |
| Thread Class | 3B SINGLE END |
| Material | STEEL TUBING |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) SINGLE END |
| End Connection Spec/std | MIL,AN818-4J |
| 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 |
|---|---|
| 165A575-1 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
| Reference | Meaning |
|---|---|
| 165A575 | D/9 Drawing number reference only Lockheed Martin Corporation Div Rotary and Mission Systems |
NSN 4710-01-399-0804 is a Tube Assembly,metal, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-399-0804 has 1 manufacturer part number on file: 165A575-1 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for 165A575-1: Seat Angle in Deg: 45.0 SINGLE END; Design Form: PREBENT; Mating End Quantity: 2 SINGLE END; Material Document and Classification: MIL-T-8606 MIL SPEC SINGLE MATERIAL RESPONSE TUBING. 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.