The Bearing,washer,thrust, cataloged under National Stock Number 3120-01-375-4657, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-375-4657 |
| Primary Part Number | 2B1-05127 |
| Item Name | Bearing,washer,thrust |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES RIGHT SIDE |
| Surface Finish | 125.0 MICROINCHES LEFT SIDE |
| Overall Thickness | 0.1300 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Style Designator | ROUND |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 2.7500 INCHES NOMINAL IN |
| Material | STEEL COMP 304 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 2B1-05127 PRIMARY | Lake Shore Systems, Inc. (USA) |
| 2B1-05127VM | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 2D3-03216 ITEM 5 | 5/1 Secondary reference Lake Shore Systems, Inc. |
| 2D3-03216 ITEM 5VM | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 3120-01-375-4657 is a Bearing,washer,thrust, manufactured by Lake Shore Systems, Inc., classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-375-4657 has 2 manufacturer part numbers on file: 2B1-05127 (Lake Shore Systems, Inc.), 2B1-05127VM (Naval Inventory Control Point Mechanicsburg).
Key specifications for 2B1-05127: Surface Finish: 125.0 MICROINCHES RIGHT SIDE; Surface Finish: 125.0 MICROINCHES LEFT SIDE; Overall Thickness: 0.1300 INCHES NOMINAL IN; Criticality Code Justification: FEAT. 8 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.