The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-01-258-4697, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Rbc Transport Dynamics Corp Div Rbc Transport Dynamics. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-258-4697 |
| Primary Part Number | GB520ES30 |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Rbc Transport Dynamics Corp Div Rbc Transport Dynamics |
| Status | ACTIVE |
| Inner Member Width | 1.4980 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN |
| Outer Member Width | 1.0660 INCHES MINIMUM AND 1.0760 INCHES MAXIMUM IN |
| Static Radial Load Rating | 184500 POUNDS LBS |
| Bore Diameter | 1.8745 INCHES MINIMUM AND 1.8750 INCHES MAXIMUM IN |
| Material | STEEL COMP 630 OUTER RACE MEMBER |
| Material | STEEL COMP 630 INNER MEMBER |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE AND PLASTIC POLYAMIDE NYLON AND PLASTIC PHENOLIC RACE LINER |
| Outer Member Outside Diameter | 2.7807 INCHES MINIMUM AND 2.7812 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 |
|---|---|
| GB520ES30 PRIMARY | Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA) |
| GB520ES30 PRIMARY | New Hampshire Ball Bearings Inc Div Astro Division (USA) |
| GB520ES30 PRIMARY | U S Bearings (USA) |
| GB520ES30 PRIMARY | Kamatics Corporation (USA) |
| Reference | Meaning |
|---|---|
| KSC122600P-6 | 5/1 Secondary reference Kamatics Corporation |
| 03-826-30E-003 | 5/1 Secondary reference Rbc Transport Dynamics Corp Div Rbc Transport Dynamics |
| ADB30-302 | 5/1 Secondary reference New Hampshire Ball Bearings Inc Div Astro Division |
| GB520ES30 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| HSP30TL109 | 5/1 Secondary reference U S Bearings |
NSN 3120-01-258-4697 is a Bearing,plain,self-Aligning, manufactured by Rbc Transport Dynamics Corp Div Rbc Transport Dynamics, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-258-4697 has 4 manufacturer part numbers on file: GB520ES30 (Rbc Transport Dynamics Corp Div Rbc Transport Dynamics), GB520ES30 (New Hampshire Ball Bearings Inc Div Astro Division), GB520ES30 (U S Bearings), GB520ES30 (Kamatics Corporation).
Key specifications for GB520ES30: Inner Member Width: 1.4980 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN; Outer Member Width: 1.0660 INCHES MINIMUM AND 1.0760 INCHES MAXIMUM IN; Static Radial Load Rating: 184500 POUNDS LBS; Bore Diameter: 1.8745 INCHES MINIMUM AND 1.8750 INCHES MAXIMUM IN. 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.