The Housing,bearing Unit, cataloged under National Stock Number 3130-00-045-3351, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is The W.w. Williams Company, Llc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-00-045-3351 |
| Primary Part Number | 6777850 |
| Item Name | Housing,bearing Unit |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | The W.w. Williams Company, Llc |
| Status | ACTIVE |
| Flange Thickness | 0.108 INCHES NOMINAL IN |
| Style Designator | FLANGE BLOCK |
| Bolt Circle Diameter | 4.860 INCHES NOMINAL IN |
| Bore Diameter | 1.8950 INCHES NOMINAL IN |
| Housing Length | 2.273 INCHES NOMINAL IN |
| Housing Diameter | 5.430 INCHES NOMINAL 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 |
|---|---|
| 340020C1 | Dressta North America Ltd (USA) |
| 6777850 PRIMARY | The W.w. Williams Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 340020C1 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 6777850 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| 320113H1 | 5/9 Secondary reference Komatsu American Intl Co |
| 340020C1 | 5/9 Secondary reference U.S. Government activity |
| 6777850 | 5/9 Secondary reference K and K Engineered Products Inc |
| 6777850 | 5/9 Secondary reference Defense Systems Inc |
NSN 3130-00-045-3351 is a Housing,bearing Unit, manufactured by The W.w. Williams Company, Llc, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-00-045-3351 has 2 manufacturer part numbers on file: 340020C1 (Dressta North America Ltd), 6777850 (The W.w. Williams Company, Llc).
Key specifications for 6777850: Flange Thickness: 0.108 INCHES NOMINAL IN; Style Designator: FLANGE BLOCK; Bolt Circle Diameter: 4.860 INCHES NOMINAL IN; Bore Diameter: 1.8950 INCHES NOMINAL IN. 6 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.