The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-01-040-2220, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 12 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 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 | 3120-01-040-2220 |
| Primary Part Number | 8031530 |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Inner Member Width | 2.3750 INCHES NOMINAL IN |
| Outer Member Width | 2.5000 INCHES NOMINAL IN |
| Style Designator | WITHOUT INSERT OR LINER |
| Material Document and Classification | MIL-L-46010 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION |
| Lubrication Feature | GROOVE AND PERFORATION INNER MEMBER |
| Surface Treatment | PASSIVATE OUTER RING |
| Bore Diameter | 3.0000 INCHES MINIMUM AND 3.0010 INCHES MAXIMUM IN |
| Material | LUBRICANT DRY FILM LUBRICATION |
| Material | STEEL COMP 630 OUTER RACE MEMBER |
| Material | COPPER ALLOY 932 INNER MEMBER |
| Material | STEEL COMP 302 OUTER RING |
| Outer Member Outside Diameter | 4.2505 INCHES MINIMUM AND 4.2510 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 |
|---|---|
| 8031530 PRIMARY | Us Army Aviation and Missile Command (USA) |
NSN 3120-01-040-2220 is a Bearing,plain,self-Aligning, manufactured by Us Army Aviation and Missile Command, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-040-2220 has 1 manufacturer part number on file: 8031530 (Us Army Aviation and Missile Command).
1 possible match (shared part number, not a government interchangeability claim): 5895-01-545-5176. Verify interchangeability with system specifications before substitution.
Key specifications for 8031530: Inner Member Width: 2.3750 INCHES NOMINAL IN; Outer Member Width: 2.5000 INCHES NOMINAL IN; Style Designator: WITHOUT INSERT OR LINER; Material Document and Classification: MIL-L-46010 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION. 12 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.