The Bearing,washer,thrust, cataloged under National Stock Number 3120-01-258-0897, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Deere & Co. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-258-0897 |
| Primary Part Number | R55721 |
| Item Name | Bearing,washer,thrust |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Deere & Co |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Keyway Radius | 0.0300 INCHES MINIMUM AND 0.0500 INCHES MAXIMUM IN |
| Overall Thickness | 0.1630 INCHES MINIMUM AND 0.1670 INCHES MAXIMUM IN |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | ROUND W/KEYWAYS |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Condition | GROUND |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 2.2800 INCHES NOMINAL IN |
| Keyway Quantity | 8 |
| Center Hole Keyway Quantity | 8 |
| Minor Diameter | 1.7550 INCHES MINIMUM AND 1.7650 INCHES MAXIMUM IN |
| Material | STEEL COMP 1552 OVERALL |
| Major Diameter | 1.9010 INCHES MINIMUM AND 1.9050 INCHES MAXIMUM IN |
| Center Hole Shape Style | ROUND W/KEYWAYS |
| Washer Keyway Depth | 0.0100 INCHES MINIMUM AND 0.0300 INCHES MAXIMUM 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 |
|---|---|
| R55721 PRIMARY | Deere & Co (USA) |
NSN 3120-01-258-0897 is a Bearing,washer,thrust, manufactured by Deere & Co, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-258-0897 has 1 manufacturer part number on file: R55721 (Deere & Co).
Key specifications for R55721: Corner Shape: SQUARE ALL CORNERS; Keyway Radius: 0.0300 INCHES MINIMUM AND 0.0500 INCHES MAXIMUM IN; Overall Thickness: 0.1630 INCHES MINIMUM AND 0.1670 INCHES MAXIMUM IN; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL. 16 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.