The Gear,spur, cataloged under National Stock Number 3020-00-012-6029, 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 20 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 3020-00-012-6029 |
| Primary Part Number | S6135-20687-001 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Hub Nominal Diameter | 0.523 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.6230 INCHES SECOND END IN |
| Teeth Quantity | 7 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 0.500 INCHES SECOND END IN |
| Bore Style | SQUARE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.585 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.762 INCHES FIRST END IN |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 64.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 1.660 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.2000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 1.529 INCHES IN |
| Pressure Angle | 30.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Counterbore Nominal Depth | 1.060 INCHES SECOND END IN |
| Face Nominal Width | 0.313 INCHES IN |
| 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 |
|---|---|
| S6135-20687-001 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| S6135-20687-1 | Bmt Aerospace Usa, Inc (USA) |
| S6135-20687-1 | Triumph Gear Systems - Macomb, Inc (USA) |
| Reference | Meaning |
|---|---|
| S6135-20687-1 | 5/9 Secondary reference Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 3020-00-012-6029 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 3020-00-012-6029 has 3 manufacturer part numbers on file: S6135-20687-001 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), S6135-20687-1 (Bmt Aerospace Usa, Inc), S6135-20687-1 (Triumph Gear Systems - Macomb, Inc).
Key specifications for S6135-20687-001: Hub Nominal Diameter: 0.523 INCHES FIRST END IN; Hub Nominal Diameter: 0.6230 INCHES SECOND END IN; Teeth Quantity: 7; Body Style: PLAIN, SOLID. 20 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 3020-00-012-6029 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.