The Tube Assembly,metal, cataloged under National Stock Number 4710-00-055-3701, is classified within Federal Supply Class 4710 (Pipe, Tube and Rigid Tubing) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4710-00-055-3701 |
| Item Name | Tube Assembly,metal |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Status | ACTIVE |
| Seat Angle in Deg | 45.0 SINGLE END |
| Design Form | STRAIGHT |
| Mating End Quantity | 2 SINGLE END |
| Thread Pitch Diameters | +0.258 TO 0.270 INCHES SINGLE END IN |
| Material Document and Classification | MIL-T-8504, COMP 304 MIL SPEC SINGLE MATERIAL RESPONSE TUBING |
| Wall Thickness | 0.028 INCHES NOMINAL IN |
| Nominal Thread Size | 0.500 INCHES SINGLE END IN |
| End Connection Style | SWIVEL NUT, FLARED SINGLE END |
| Tube Outside Diameter | 0.312 INCHES NOMINAL IN |
| Thread Class | 3B SINGLE END |
| Material | STEEL COMP 304 TUBING |
| Material | STEEL COMP 304 SINGLE END |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) SINGLE END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 869547-1 | 3/2 Design control — primary reference U.S. Government activity |
| 869073-1 | 5/2 Secondary reference U.S. Government activity |
NSN 4710-00-055-3701 is a Tube Assembly,metal, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5340-01-691-2587. Verify interchangeability with system specifications before substitution.
Key specifications for 4710-00-055-3701: Seat Angle in Deg: 45.0 SINGLE END; Design Form: STRAIGHT; Mating End Quantity: 2 SINGLE END; Thread Pitch Diameters: +0.258 TO 0.270 INCHES SINGLE END IN. 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.