The Bearing,washer,thrust, cataloged under National Stock Number 3120-01-031-8360, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3120-01-031-8360 |
| Item Name | Bearing,washer,thrust |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES RIGHT SIDE |
| Corner Shape | SQUARE FIRST OUTSIDE CORNER |
| Corner Shape | SQUARE FIRST INSIDE CORNER |
| Corner Shape | SQUARE SECOND INSIDE CORNER |
| Spherical Depth | 0.0015 INCHES MINIMUM AND 0.0025 INCHES MAXIMUM IN |
| Overall Thickness | 0.3115 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZW |
| Style Designator | ROUND |
| Diameter | 5.7500 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 7.5250 INCHES MINIMUM AND 7.5290 INCHES MAXIMUM IN |
| Departure From Cited Document | AS DIFFERENTIATED BY SPECIAL QUALITY CONTROL TESTING FOR MK 48 TORPEDO |
| Material | STEEL COMP E52100 OVERALL |
| Center Hole Shape Style | ROUND |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 2498557 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 2498557 | 3/1 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 3120-01-031-8360 is a Bearing,washer,thrust, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3120-01-436-1789. Verify interchangeability with system specifications before substitution.
Key specifications for 3120-01-031-8360: Surface Finish: 32.0 MICROINCHES RIGHT SIDE; Corner Shape: SQUARE FIRST OUTSIDE CORNER; Corner Shape: SQUARE FIRST INSIDE CORNER; Corner Shape: SQUARE SECOND INSIDE CORNER. 14 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.