The Gear,helical, cataloged under National Stock Number 3020-01-300-3095, 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 Timken Gears & Services Inc. Div Philadelphia Gear. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-300-3095 |
| Primary Part Number | 50-105-0437-2 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Timken Gears & Services Inc. Div Philadelphia Gear |
| Status | ACTIVE |
| Keyway Nominal Width | 1.000 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 4.500 INCHES BOTH ENDS IN |
| Teeth Quantity | 82 |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Outside Diameter | 16.766 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 2.750 INCHES BOTH ENDS IN |
| Material | STEEL COMP 4140 OVERALL |
| 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 |
|---|---|
| 50-105-0437-2 PRIMARY | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
| Reference | Meaning |
|---|---|
| B-200161-D-011 ITEM 53 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-01-300-3095 is a Gear,helical, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-300-3095 has 1 manufacturer part number on file: 50-105-0437-2 (Timken Gears & Services Inc. Div Philadelphia Gear).
Key specifications for 50-105-0437-2: Keyway Nominal Width: 1.000 INCHES BOTH ENDS IN; Bore Nominal Diameter: 4.500 INCHES BOTH ENDS IN; Teeth Quantity: 82; Bore Style: W/ KEYWAY BOTH ENDS. 7 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.