The Gear,helical, cataloged under National Stock Number 3020-00-693-8389, 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 Asrc Federal Facilities Logistics, Llc. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-693-8389 |
| Primary Part Number | 01770-0070 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Asrc Federal Facilities Logistics, Llc |
| Status | ACTIVE |
| Helix Angle | 23.2158 DEGREES |
| Teeth Quantity | 27 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Mounting Hole Type and Quantity | 3 PLAIN TRANSVERSELY THROUGH FACE |
| Nominal Distance Between Body Face and Protruding Hub End | 0.563 INCHES BOTH ENDS IN |
| Mounting Hole Nominal Diameter | 0.125 INCHES TRANSVERSELY THROUGH FACE IN |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 3.9090 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 4.126 INCHES IN |
| Pressure Angle | 23.2058 DEGREES |
| Material | STEEL OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 1.063 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 |
|---|---|
| 01770-0070 PRIMARY | Asrc Federal Facilities Logistics, Llc (USA) |
| Reference | Meaning |
|---|---|
| 01770-0070 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-693-8389 is a Gear,helical, manufactured by Asrc Federal Facilities Logistics, Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-693-8389 has 1 manufacturer part number on file: 01770-0070 (Asrc Federal Facilities Logistics, Llc).
Key specifications for 01770-0070: Helix Angle: 23.2158 DEGREES; Teeth Quantity: 27; Body Style: PLAIN, SOLID; Tooth Direction: LEFT. 17 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.