The Gear,spur, cataloged under National Stock Number 3020-00-692-5003, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-692-5003 |
| Primary Part Number | 8686240 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Keyway Nominal Width | 0.189 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.624 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.125 INCHES FIRST END IN |
| Teeth Quantity | 27 |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.432 INCHES FIRST END IN |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 0.870 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | 66,AISI/SAE 4150,6150,8650,5150 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.2500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 2.437 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.418 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4150 AND STEEL COMP 6150 AND STEEL COMP 8650 AND STEEL COMP 5150 OVERALL |
| Face Nominal Width | 0.438 INCHES 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 |
|---|---|
| 8686240 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 3020006925003 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 3020-00-692-5003 is a Gear,spur, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-692-5003 has 1 manufacturer part number on file: 8686240 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8686240: Keyway Nominal Width: 0.189 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.624 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.125 INCHES FIRST END IN; Teeth Quantity: 27. 19 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.