The Bearing,ball,duplex, cataloged under National Stock Number 3110-01-044-7289, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-044-7289 |
| Primary Part Number | ESB052-18NT |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZW |
| Departure From Cited Document | ANNUAL BALL BEARING FOR QUIET OPERATION APPLICATION TO SUBMARINE USAGE |
| Reference Number Differentiating Characteristics | ANNUAL BALL BEARING FOR QUIET OPERATION APPLICATION TO SUBMARINE USAGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| ESB052-18NT | Naval Inventory Control Point Mechanicsburg (USA) |
| M17931-A044NT | Naval Inventory Control Point Mechanicsburg (USA) |
| A-509-278 ITEM NO 20NT | Naval Inventory Control Point Mechanicsburg (USA) |
| MIL-B-17931ENT | Naval Inventory Control Point Mechanicsburg (USA) |
| 17931A044NT | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| A-509-278 ITEM NO 20 | 3/1 Design control — primary reference Hansome Energy Systems Inc |
| 995863070 | 5/9 Secondary reference U.S. Government activity |
| 79999112NT | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 17931A044 | 5/1 Secondary reference U.S. Government activity |
| M17931-A044 | 5/1 Secondary reference U.S. Government activity |
| MIL-B-17931E | 4/1 Identification reference U.S. Government activity |
| M17931-A044 | 5/1 Secondary reference Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation |
| M17931-A044 | 5/1 Secondary reference Timken Co Div the Timken Company |
| 3586-1PC26 | 5/9 Secondary reference U.S. Government activity |
| 79999112 | 5/9 Secondary reference U.S. Government activity |
| ESB052-18 | 5/1 Secondary reference Hansome Energy Systems Inc |
NSN 3110-01-044-7289 is a Bearing,ball,duplex, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-044-7289 has 5 manufacturer part numbers on file: ESB052-18NT (Naval Inventory Control Point Mechanicsburg), M17931-A044NT (Naval Inventory Control Point Mechanicsburg), A-509-278 ITEM NO 20NT (Naval Inventory Control Point Mechanicsburg), MIL-B-17931ENT (Naval Inventory Control Point Mechanicsburg), 17931A044NT (Naval Inventory Control Point Mechanicsburg).
Key specifications for ESB052-18NT: Criticality Code Justification: ZZZW; Departure From Cited Document: ANNUAL BALL BEARING FOR QUIET OPERATION APPLICATION TO SUBMARINE USAGE; End Item Identification: MOTOR AC 440 V 200HP 1200RPM V; Reference Number Differentiating Characteristics: ANNUAL BALL BEARING FOR QUIET OPERATION APPLICATION TO SUBMARINE USAGE. 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.
NSN 3110-01-044-7289 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.