The Center Steering Arm, cataloged under National Stock Number 4710-01-477-0721, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4710-01-477-0721 |
| Primary Part Number | 3854 |
| Item Name | Center Steering Arm |
| FSC / FSG | 4710 / 47 — Pipe, Tube and Rigid Tubing |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Overall Diameter | 2.000 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Material | IRON |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 3854 | Pdi Ground Support Systems, Inc. (USA) |
| 3854 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 02-0137 PRIMARY | Trailer Component Manufacturing Inc. (USA) |
| 3573AS225-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 3573AS225 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 02-137 | 5/9 Secondary reference Trailer Component Manufacturing Inc. |
NSN 4710-01-477-0721 is a Center Steering Arm, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.
NSN 4710-01-477-0721 has 4 manufacturer part numbers on file: 3854 (Pdi Ground Support Systems, Inc.), 3854 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 02-0137 (Trailer Component Manufacturing Inc.), 3573AS225-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 3854: Overall Height: 1.120 INCHES MINIMUM AND 3.380 INCHES MAXIMUM IN; Overall Diameter: 2.000 INCHES NOMINAL IN; Criticality Code Justification: FEAT; Overall Length: 19.750 INCHES NOMINAL IN. 3 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.