The Gear,spur, cataloged under National Stock Number 3020-00-730-6554, 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 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-730-6554 |
| Primary Part Number | 8351570 |
| 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 |
| Bore Nominal Diameter | 1.661 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 2.640 INCHES FIRST END IN |
| Teeth Quantity | 36 |
| Body Style | PLAIN, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.771 INCHES FIRST END IN |
| Hardness Rating | 90.0 ROCKWELL SUPERFICIAL 15-N NOMINAL TEETH |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND A1SI/SAE 8620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.6000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Spline Quantity | 26 BOTH ENDS |
| Nominal Outside Diameter | 3.795 INCHES IN |
| Pressure Angle | 30.0000 DEGREES |
| Material | STEEL OVERALL |
| Spline Pitch Diameter | 1.6250 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 1.665 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 |
|---|---|
| 8351570 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 3020007306554 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 3020-00-730-6554 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 3020-00-730-6554 has 1 manufacturer part number on file: 8351570 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8351570: Bore Nominal Diameter: 1.661 INCHES BOTH ENDS IN; Hub Nominal Diameter: 2.640 INCHES FIRST END IN; Teeth Quantity: 36; Body Style: PLAIN, SOLID. 18 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.