The Gear,reverse, cataloged under National Stock Number 3020-00-735-4240, 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 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-735-4240 |
| Primary Part Number | 8351643 |
| Item Name | Gear,reverse |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,COMPOSITION 4145,MIL-SPEC MIL-S-46172; 8.906 IN. O/A DIA,2.500 IN. O/A LG; OD INVOLUTE SPLINE,52 TEETH,20 DEG PRESSURE ANGLE,8.6667 PITCH DIA,8.317 ROOT DIA; ID SPUR GEAR,75 TEETH,10 PITCH,25 DEG PRESSURE ANGLE,7.500 IN. PITCH DIA,7.800 IN. ROOT DIA 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 |
|---|---|
| 8351643 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 2520007354240 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 8351643 | 5/9 Secondary reference Tongil Heavy Industries Co. Ltd |
| 8351643 | C/1 Advisory reference — outside the item-of-supply concept Snt Dynamics Co., Ltd. Div Security Team |
NSN 3020-00-735-4240 is a Gear,reverse, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-735-4240 has 1 manufacturer part number on file: 8351643 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8351643: General Characteristics Item Description: STEEL,COMPOSITION 4145,MIL-SPEC MIL-S-46172; 8.906 IN. O/A DIA,2.500 IN. O/A LG; OD INVOLUTE SPLINE,52 TEETH,20 DEG PRESSURE ANGLE,8.6667 PITCH DIA,8.317 ROOT DIA; ID SPUR GEAR,75 TEETH,10 PITCH,25 DEG PRESSURE ANGLE,7.500 IN. PITCH DIA,7.800 IN. ROOT DIA IN. 1 specification is 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.