The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-01-446-5239, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is New Hampshire Ball Bearings Inc Div Astro Division. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 — Bearings, Plain, Unmounted (FSG 31) |
| Manufacturers | New Hampshire Ball Bearings Inc Div Astro Division (CAGE 15860); Rexnord Industries, Llc Dba Psi Bearings Div Psi Bearings (CAGE 57606); Valley-Todeco, Inc. Dba Arconic Fastening Systems (CAGE 06710); Rbc Specline Inc Dba Specline Inc (CAGE 16746) |
| Parameter | Value |
|---|---|
| NSN | 3120-01-446-5239 |
| Primary Part Number | 4D0037-20S-N |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | New Hampshire Ball Bearings Inc Div Astro Division |
| Status | ACTIVE |
| 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 |
|---|---|
| 4D0037-20S-N PRIMARY | New Hampshire Ball Bearings Inc Div Astro Division (USA) |
| 4D0037-20S-N PRIMARY | Rexnord Industries, Llc Dba Psi Bearings Div Psi Bearings (USA) |
| 4D0037-20S-N PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 4D0037-20S-N PRIMARY | Rbc Specline Inc Dba Specline Inc (USA) |
| Reference | Meaning |
|---|---|
| P26110S-N | 5/1 Secondary reference Rexnord Industries, Llc Dba Psi Bearings Div Psi Bearings |
| 4D0037-20S-N | 3/2 Design control — primary reference U.S. Government activity |
| VTB09880S-N | 5/1 Secondary reference Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| 4D0037-20S-N | 1/2 Source control — Government-approved source U.S. Government activity |
| 4D0037-20-SN | 5/9 Secondary reference Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| BSG20S-N | 5/1 Secondary reference Rbc Specline Inc Dba Specline Inc |
| 4D0037-20S-N | 3/2 Design control — primary reference U.S. Government activity |
| BSSR-20-2245S-N | 5/1 Secondary reference U.S. Government activity |
| AMB-20-1037S-N | 5/1 Secondary reference New Hampshire Ball Bearings Inc Div Astro Division |
| KMB20S-N-51 | 5/1 Secondary reference U.S. Government activity |
NSN 3120-01-446-5239 is a Bearing,plain,self-Aligning, manufactured by New Hampshire Ball Bearings Inc Div Astro Division, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-446-5239 has 4 manufacturer part numbers on file: 4D0037-20S-N (New Hampshire Ball Bearings Inc Div Astro Division), 4D0037-20S-N (Rexnord Industries, Llc Dba Psi Bearings Div Psi Bearings), 4D0037-20S-N (Valley-Todeco, Inc. Dba Arconic Fastening Systems), 4D0037-20S-N (Rbc Specline Inc Dba Specline Inc).
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.