The Gear,helical, cataloged under National Stock Number 3020-00-756-0807, 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 Trw Inc Trw Intl Trade Government Sales Dept. Government technical data includes 18 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-756-0807 |
| Primary Part Number | TG2757 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Trw Inc Trw Intl Trade Government Sales Dept |
| Status | ACTIVE |
| Keyway Nominal Width | 0.188 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.378 INCHES BOTH ENDS IN |
| Helix Angle | 68.0000 DEGREES |
| Teeth Quantity | 29 |
| Body Style | WEBBED, OFFSET, SOLID |
| Tooth Direction | LEFT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS, RECESSED BODY |
| Pitch Diameter | 3.1573 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Features Provided | CASEHARDENED |
| Nominal Outside Diameter | 3.3750 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.786 INCHES BOTH ENDS IN |
| Pressure Angle | 14.0000 DEGREES |
| Material | STEEL OVERALL |
| Body Recess Nominal Depth | 0.150 INCHES FIRST END IN |
| Face Nominal Width | 0.884 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 |
|---|---|
| TG2757 | Trw Inc Trw Intl Trade Government Sales Dept (USA) |
| TG2755 | Trw Inc Trw Intl Trade Government Sales Dept (USA) |
| TG2753 | Trw Inc Trw Intl Trade Government Sales Dept (USA) |
| Reference | Meaning |
|---|---|
| C5TZ-6306-B | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| C5TZ-6306-A | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| C5AZ-6306-B | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| E1TZ6256A AND E1TZ6306A | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| E1TZ6256A AND E1TZ6306A | 3/9 Design control — primary reference Ford Motor Company |
NSN 3020-00-756-0807 is a Gear,helical, manufactured by Trw Inc Trw Intl Trade Government Sales Dept, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-756-0807 has 3 manufacturer part numbers on file: TG2757 (Trw Inc Trw Intl Trade Government Sales Dept), TG2755 (Trw Inc Trw Intl Trade Government Sales Dept), TG2753 (Trw Inc Trw Intl Trade Government Sales Dept).
Key specifications for TG2757: Keyway Nominal Width: 0.188 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.378 INCHES BOTH ENDS IN; Helix Angle: 68.0000 DEGREES; Teeth Quantity: 29. 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.