The Tube Assembly,metal, cataloged under National Stock Number 4710-01-012-0573, 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 Smiths Tubular Systems-Laconia, Inc. Div Lewis & Saunders. Government technical data includes 15 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. 3 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 | 4710-01-012-0573 |
| Primary Part Number | 25424 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Smiths Tubular Systems-Laconia, Inc. Div Lewis & Saunders |
| Status | ACTIVE |
| Seat Angle in Deg | 37.0 SINGLE END |
| Design Form | PREBENT |
| Mating End Quantity | 2 SINGLE END |
| Material Document and Classification | AISI 304 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 321 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 347 ASSN STD SINGLE MATERIAL RESPONSE TUBING |
| Material Document and Classification | TYPE 316 ASSN STD SINGLE MATERIAL RESPONSE SINGLE END |
| Wall Thickness | 0.019 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND SINGLE END |
| Nominal Thread Size | 0.438 INCHES SINGLE END IN |
| End Connection Style | SWIVEL NUT, FLARED SINGLE END |
| Tube Outside Diameter | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Thread Class | 3B SINGLE END |
| Material | STEEL COMP 316 SINGLE END |
| Material | STEEL COMP 304 OR STEEL COMP 321 OR STEEL COMP 347 TUBING |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) SINGLE END |
| End Connection Spec/std | MIL,MS20819,PART NO. MS20819-4K AND AN,AN818,PART NO. AN818-4K |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4710-01-012-0573 is a Tube Assembly,metal, manufactured by Smiths Tubular Systems-Laconia, Inc. Div Lewis & Saunders, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-012-0573 has 2 manufacturer part numbers on file: 25424 (Smiths Tubular Systems-Laconia, Inc. Div Lewis & Saunders), 25424 (Williams International Co., L.l.c.).
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-055-8531, 5930-01-465-1041, 1005-01-601-5603. Verify interchangeability with system specifications before substitution.
Key specifications for 25424: Seat Angle in Deg: 37.0 SINGLE END; Design Form: PREBENT; Mating End Quantity: 2 SINGLE END; Material Document and Classification: AISI 304 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 321 ASSN STD SINGLE MATERIAL RESPONSE OR AISI 347 ASSN STD SINGLE MATERIAL RESPONSE TUBING. 15 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.
NSN 4710-01-012-0573 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.