The Gear,spur, cataloged under National Stock Number 3020-01-088-3673, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-088-3673 |
| Primary Part Number | 70351-08171-105 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Teeth Quantity | 83 |
| Body Style | PLAIN, SOLID |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | RECESSED HUBS |
| Pitch Diameter | 8.0470 INCHES MINIMUM AND 8.0670 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Pressure Angle | 22.5000 DEGREES |
| 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 |
|---|---|
| 70351-08171-105 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 3020-01-088-3673 is a Gear,spur, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-088-3673 has 1 manufacturer part number on file: 70351-08171-105 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 70351-08171-105: Teeth Quantity: 83; Body Style: PLAIN, SOLID; Bore Style: W/COUNTERBORE BOTH ENDS; Hardness Rating: 30.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL. 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.
NSN 3020-01-088-3673 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.