The Tube Assembly,metal, cataloged under National Stock Number 4710-01-225-9166, 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 O T S I. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4710-01-225-9166 |
| Primary Part Number | 5548090-002 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | O T S I |
| Status | ACTIVE |
| Seat Angle in Deg | 37.0 SINGLE END |
| Design Form | PREBENT |
| Mating End Quantity | 2 SINGLE END |
| Material Document and Classification | ASTM A269, GRADE T+304 ASSN STD SINGLE MATERIAL RESPONSE TUBING |
| Wall Thickness | 0.035 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND SINGLE END |
| Nominal Thread Size | 0.562 INCHES SINGLE END IN |
| End Connection Style | SWIVEL NUT WITH COMPRESSION SLEEVE SINGLE END |
| Tube Outside Diameter | 0.375 INCHES NOMINAL IN |
| Thread Class | 2B SINGLE END |
| Material | STEEL CORROSION RESISTING SINGLE END |
| Material | STEEL COMP 304 TUBING |
| Thread Series Designator | UNF SINGLE END |
| End Connection Spec/std | MIL,MS51531,PART NO. MS51531-B6S AND MIL,MS51533,PART NO. MS51533-B6S |
| 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 |
|---|---|
| 5548090-002 | Naval Sea Systems Command (USA) |
| 5548090-002 PRIMARY | O T S I (USA) |
| Reference | Meaning |
|---|---|
| 5548090 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4710-01-225-9166 is a Tube Assembly,metal, manufactured by O T S I, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-225-9166 has 2 manufacturer part numbers on file: 5548090-002 (Naval Sea Systems Command), 5548090-002 (O T S I).
2 possible matches (shared part number, not a government interchangeability claim): 4710-01-225-9167, 4710-01-378-7900. Verify interchangeability with system specifications before substitution.
Key specifications for 5548090-002: Seat Angle in Deg: 37.0 SINGLE END; Design Form: PREBENT; Mating End Quantity: 2 SINGLE END; Material Document and Classification: ASTM A269, GRADE T+304 ASSN STD SINGLE MATERIAL RESPONSE TUBING. 14 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.