The Strut Tube Bearing Assembly, cataloged under National Stock Number 3130-01-651-4078, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Strut Tube Bearing Assembly |
| FSC / FSG | 3130 — Bearings, Mounted (FSG 31) |
| Manufacturers | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (CAGE 78286); Science Applications International Corporation Dba Saic Div Classified Aircraft Operations (CAGE 74RJ4) |
| Parameter | Value |
|---|---|
| NSN | 3130-01-651-4078 |
| Primary Part Number | 21D1210-100 |
| Item Name | Strut Tube Bearing Assembly |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 21D1210-100 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 21D1210-100 PRIMARY | Science Applications International Corporation Dba Saic Div Classified Aircraft Operations (USA) |
| Reference | Meaning |
|---|---|
| 21D1210-100 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3130-01-651-4078 is a Strut Tube Bearing Assembly, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-01-651-4078 has 2 manufacturer part numbers on file: 21D1210-100 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 21D1210-100 (Science Applications International Corporation Dba Saic Div Classified Aircraft Operations).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 3130-01-651-4078 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.