The Bearing,ball,annular, cataloged under National Stock Number 3110-01-280-3665, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Thyssenkrupp Rothe Erde Usa Inc.. Government technical data includes 3 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-280-3665 |
| Primary Part Number | A20-55NID |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Thyssenkrupp Rothe Erde Usa Inc. |
| Status | ACTIVE |
| Overall Outside Diameter | 62.6300 INCHES NOMINAL IN |
| Features Provided | LUBRICATION HOLE |
| Bore Diameter | 45.6500 INCHES NOMINAL 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 |
|---|---|
| 503-01801 ITEM 55 | Lake Shore Systems, Inc. (USA) |
| A20-55NID PRIMARY | Thyssenkrupp Rothe Erde Usa Inc. (USA) |
NSN 3110-01-280-3665 is a Bearing,ball,annular, manufactured by Thyssenkrupp Rothe Erde Usa Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-280-3665 has 2 manufacturer part numbers on file: 503-01801 ITEM 55 (Lake Shore Systems, Inc.), A20-55NID (Thyssenkrupp Rothe Erde Usa Inc.).
Key specifications for A20-55NID: Overall Width: 5.7500 INCHES NOMINAL IN; Overall Outside Diameter: 62.6300 INCHES NOMINAL IN; Features Provided: LUBRICATION HOLE; Special Features: 35 MOUNTING HOLES ON OUTER RACE,1.3125 IN. DIA,ON A 60.1250 IN. DIA BOLT CIRCLE;36 MOUNTING HOLES ON INNER RACE,1.3125 IN. DIA,ON A 50.5000 IN. DIA BOLT CIRCLE 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.