The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-00-554-4852, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Roller Bearing Company of America, Inc.. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3120-00-554-4852 |
| Primary Part Number | 9986924 |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Roller Bearing Company of America, Inc. |
| Status | ACTIVE |
| Inner Member Width | 0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Outer Member Width | 0.1845 INCHES NOMINAL IN |
| Style Designator | WITH INSERT AND/OR LINER |
| Surface Treatment | CHROMIUM INNER MEMBER |
| Bore Diameter | 0.1645 INCHES MINIMUM AND 0.1650 INCHES MAXIMUM IN |
| Outer Member Outside Diameter | 0.4682 INCHES MINIMUM AND 0.4687 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 |
|---|---|
| 9986924 | Us Army Aviation and Missile Command (USA) |
| 9986924 PRIMARY | Roller Bearing Company of America, Inc. (USA) |
| 9986924 PRIMARY | Triumph Engine Control Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 27235 | 5/1 Secondary reference Triumph Engine Control Systems Llc |
| 9986924 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
| LSS2 | 5/1 Secondary reference Roller Bearing Company of America, Inc. |
NSN 3120-00-554-4852 is a Bearing,plain,self-Aligning, manufactured by Roller Bearing Company of America, Inc., classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-00-554-4852 has 3 manufacturer part numbers on file: 9986924 (Us Army Aviation and Missile Command), 9986924 (Roller Bearing Company of America, Inc.), 9986924 (Triumph Engine Control Systems Llc).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-189-6757. Verify interchangeability with system specifications before substitution.
Key specifications for 9986924: Inner Member Width: 0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN; Outer Member Width: 0.1845 INCHES NOMINAL IN; Style Designator: WITH INSERT AND/OR LINER; Special Features: SNUG FIT BRG. 6 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.