The Gear,spur, cataloged under National Stock Number 3020-00-753-9755, 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 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-753-9755 |
| Primary Part Number | 7539755 |
| 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 | 3.731 INCHES SECOND END IN |
| Hub Nominal Diameter | 4.255 INCHES SECOND END IN |
| Teeth Quantity | 28 |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Flange Nominal Thickness | 0.375 INCHES IN |
| Flange Nominal Diameter | 10.750 INCHES IN |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 9 PLAIN AXIALLY THROUGH BODY FIRST END |
| Mounting Hole Nominal Diameter | 0.531 INCHES AXIALLY THROUGH FLANGE IN |
| Hardness Rating | 60.0 ROCKWELL C NOMINAL OVERALL |
| Style Designator | FLANGED END |
| Material Document and Classification | MIL-S-48172 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.6667 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Distance Between Outer Body Face and Inner Flange Face | 2.278 INCHES IN |
| Nominal Outside Diameter | 10.750 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 8615H OVERALL |
| Bolt Hole Circle Nominal Diameter | 9.750 INCHES AXIALLY THROUGH FLANGE IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 1.250 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 |
|---|---|
| 6763417 | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 6763417 | General Motors Corp (USA) |
| 7539755 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 3020007539755 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 3020-00-753-9755 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 3020-00-753-9755 has 3 manufacturer part numbers on file: 6763417 (Allison Transmission Inc Dba Allison Transmission, Inc), 6763417 (General Motors Corp), 7539755 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7539755: Bore Nominal Diameter: 3.731 INCHES SECOND END IN; Hub Nominal Diameter: 4.255 INCHES SECOND END IN; Teeth Quantity: 28; Body Style: PLAIN, WITH LIGHTENING HOLES. 21 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.