The Bearing,washer,thrust, cataloged under National Stock Number 3120-00-554-5481, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-554-5481 |
| Item Name | Bearing,washer,thrust |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Status | ACTIVE |
| Surface Finish | 13.0 MICROINCHES OVERALL |
| Corner Shape | SQUARE ALL CORNERS |
| Overall Thickness | 0.0640 INCHES NOMINAL IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | ROUND |
| Material Document and Classification | MIL-S-18729,COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.6400 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 1.0630 INCHES NOMINAL IN |
| Material | STEEL COMP 4130 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 | X |
| Reference | Meaning |
|---|---|
| 47-620-254-1 | 3/2 Design control — primary reference U.S. Government activity |
| 47-620-254-1 | 5/9 Secondary reference U.S. Government activity |
NSN 3120-00-554-5481 is a Bearing,washer,thrust, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
Key specifications for 3120-00-554-5481: Surface Finish: 13.0 MICROINCHES OVERALL; Corner Shape: SQUARE ALL CORNERS; Overall Thickness: 0.0640 INCHES NOMINAL IN; Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL. 11 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.