The Bearing,washer,thrust, cataloged under National Stock Number 3120-00-293-9989, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. Government technical data includes 9 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through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-293-9989 |
| Primary Part Number | TW401C1 |
| Item Name | Bearing,washer,thrust |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Overall Thickness | 0.1890 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN |
| Style Designator | ROUND |
| Diameter | 3.0000 INCHES MINIMUM AND 3.0020 INCHES MAXIMUM IN |
| Surface Condition | GROUND |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 4.2470 INCHES MINIMUM AND 4.2490 INCHES MAXIMUM IN |
| Material | IRON 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 |
| Part Number | Manufacturer |
|---|---|
| TW401C1 PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| Reference | Meaning |
|---|---|
| D2-9420PC229 | 5/9 Secondary reference Usm Corp Sub of Emhart Industries Inc Farrel Co Div |
| E1874-46 | 5/9 Secondary reference Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| 356951 | 5/9 Secondary reference Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| E1873PC46 | 5/9 Secondary reference Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| D2-9420-229 | 5/9 Secondary reference Usm Corp Sub of Emhart Industries Inc Farrel Co Div |
| E2390PC46 | 5/9 Secondary reference Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| E1872PC46 | 5/9 Secondary reference Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| DE99S4501-43PC46 | 5/2 Secondary reference U.S. Government activity |
| DE129S4200-241265PC229 | 5/2 Secondary reference U.S. Government activity |
| DE99S4501-42PC46 | 5/2 Secondary reference U.S. Government activity |
| DE99S4501-44PC46 | 5/2 Secondary reference U.S. Government activity |
NSN 3120-00-293-9989 is a Bearing,washer,thrust, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-00-293-9989 has 1 manufacturer part number on file: TW401C1 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
Key specifications for TW401C1: Corner Shape: SQUARE ALL CORNERS; Overall Thickness: 0.1890 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN; Style Designator: ROUND; Diameter: 3.0000 INCHES MINIMUM AND 3.0020 INCHES MAXIMUM IN. 9 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.