The Housing,bearing Unit, cataloged under National Stock Number 3130-01-326-8001, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Walker Power Systems, Inc. Dba Tiernay Turbines. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-01-326-8001 |
| Primary Part Number | 212733-1 |
| Item Name | Housing,bearing Unit |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Walker Power Systems, Inc. Dba Tiernay Turbines |
| Status | ACTIVE |
| Style Designator | FLANGE BLOCK |
| Overall Outside Diameter | 5.750 INCHES NOMINAL IN |
| Bolt Circle Diameter | 5.125 INCHES NOMINAL IN |
| Housing Length | 1.625 INCHES NOMINAL IN |
| Housing Diameter | 5.750 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 |
|---|---|
| 212733-1 PRIMARY | Walker Power Systems, Inc. Dba Tiernay Turbines (USA) |
| Reference | Meaning |
|---|---|
| 273120 | 5/9 Secondary reference U.S. Government activity |
NSN 3130-01-326-8001 is a Housing,bearing Unit, manufactured by Walker Power Systems, Inc. Dba Tiernay Turbines, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-01-326-8001 has 1 manufacturer part number on file: 212733-1 (Walker Power Systems, Inc. Dba Tiernay Turbines).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-357-4481. Verify interchangeability with system specifications before substitution.
Key specifications for 212733-1: Style Designator: FLANGE BLOCK; Overall Outside Diameter: 5.750 INCHES NOMINAL IN; Bolt Circle Diameter: 5.125 INCHES NOMINAL IN; End Item Identification: 2590-01-268-8229 AUXILIARY POWER UNIT. 5 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.