The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-01-009-4513, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Rbc Aircraft Products, Inc.. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-009-4513 |
| Primary Part Number | BS8ATC21Z |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Rbc Aircraft Products, Inc. |
| Status | ACTIVE |
| Inner Member Width | 0.3410 INCHES MINIMUM AND 0.3430 INCHES MAXIMUM IN |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM OUTER RACE MEMBER |
| Hardness Rating | 58.0 ROCKWELL C MAXIMUM INNER MEMBER |
| Outer Member Width | 0.2450 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN |
| Style Designator | WITH INSERT AND/OR LINER |
| Material Document and Classification | AMS 5613 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5630 ASSN STD 2ND MATERIAL RESPONSE OUTER RACE MEMBER |
| Bore Diameter | 0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Material | PLASTIC TETRAFLUOROETHYLENE RACE LINER |
| Material | STEEL COMP 410 OR STEEL COMP 440C OUTER RACE MEMBER |
| Outer Member Outside Diameter | 0.6557 INCHES MINIMUM AND 0.6562 INCHES MAXIMUM 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 |
|---|---|
| BS8ATC21Z PRIMARY | Rbc Aircraft Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| BS8ATC21Z | 3/9 Design control — primary reference Timken Co Div the Timken Company |
NSN 3120-01-009-4513 is a Bearing,plain,self-Aligning, manufactured by Rbc Aircraft Products, Inc., classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-009-4513 has 1 manufacturer part number on file: BS8ATC21Z (Rbc Aircraft Products, Inc.).
Key specifications for BS8ATC21Z: Inner Member Width: 0.3410 INCHES MINIMUM AND 0.3430 INCHES MAXIMUM IN; Hardness Rating: 28.0 ROCKWELL C MINIMUM OUTER RACE MEMBER; Hardness Rating: 58.0 ROCKWELL C MAXIMUM INNER MEMBER; Outer Member Width: 0.2450 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN. 10 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.