The Gear,spur, cataloged under National Stock Number 3020-00-679-9256, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-679-9256 |
| Primary Part Number | 8756534 |
| 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 | 0.252 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.938 INCHES BOTH ENDS IN |
| Teeth Quantity | 26 |
| Body Style | WEBBED, SOLID |
| Bore Style | TAPERED W/KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.031 INCHES FIRST END IN |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM TEETH |
| Style Designator | ONE PROTRUDING HUB, ONE FLUSH HUB |
| Taper Major Nominal Diameter | 1.056 INCHES BOTH ENDS IN |
| Material Document and Classification | MIL-S-13048-CANC MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.7143 INCHES NOMINAL IN |
| Tooth Form | STUB |
| Features Provided | TAPERED KEYWAY |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 3.937 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.661 INCHES BOTH ENDS IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.844 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 |
|---|---|
| 8756534 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 3020006799256 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 3020-00-679-9256 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 3020-00-679-9256 has 1 manufacturer part number on file: 8756534 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8756534: Keyway Nominal Width: 0.252 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.938 INCHES BOTH ENDS IN; Teeth Quantity: 26; Body Style: WEBBED, SOLID. 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.