The Ball Screw Assembly,carriage Dri, cataloged under National Stock Number 3950-01-038-4467, is classified within Federal Supply Class 3950 (Winches, Hoists, Cranes, and Derricks) of the Materials Handling Equipment group. The manufacturer of record is Beaver Aerospace & Defense, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3950-01-038-4467 |
| Primary Part Number | B20417 |
| Item Name | Ball Screw Assembly,carriage Dri |
| FSC / FSG | 3950 / 39 — Winches, Hoists, Cranes, and Derricks |
| Manufacturer | Beaver Aerospace & Defense, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | 122.90 OVERALL LENGTH; BALL 440C STEEL; NICKEL PLATE BALL SCREW; NUT AISI 8620 STEEL; BALL NUT FINISH W/BLACK OXIDE; 2.675 IN. RADIAL CLEARANCE ENVELOPE FOR BALL NUT AND BALL RETURN IN |
| 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 |
|---|---|
| B20417 PRIMARY | Beaver Aerospace & Defense, Inc. (USA) |
| W63283211 PRIMARY | Nsk Corp Bearing Div (USA) |
| Reference | Meaning |
|---|---|
| 3021510 | 5/2 Secondary reference U.S. Government activity |
| 3021510 | 5/9 Secondary reference U.S. Government activity |
| 3021510 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| B20417 | 5/9 Secondary reference Beaver Precision Products Inc |
| 3021510 | 5/9 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
NSN 3950-01-038-4467 is a Ball Screw Assembly,carriage Dri, manufactured by Beaver Aerospace & Defense, Inc., classified under FSC 3950, Winches, Hoists, Cranes, and Derricks. Status: active.
NSN 3950-01-038-4467 has 2 manufacturer part numbers on file: B20417 (Beaver Aerospace & Defense, Inc.), W63283211 (Nsk Corp Bearing Div).
Key specifications for B20417: General Characteristics Item Description: 122.90 OVERALL LENGTH; BALL 440C STEEL; NICKEL PLATE BALL SCREW; NUT AISI 8620 STEEL; BALL NUT FINISH W/BLACK OXIDE; 2.675 IN. RADIAL CLEARANCE ENVELOPE FOR BALL NUT AND BALL RETURN IN. 1 specification is 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.