The Gear,spur, cataloged under National Stock Number 3020-01-216-4175, 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 American Turbo Systems Inc. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-216-4175 |
| Primary Part Number | 101448-1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | American Turbo Systems Inc |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.378 INCHES BOTH ENDS IN |
| Teeth Quantity | 109 |
| Nominal Overall Length | 1.145 INCHES IN |
| Nominal Outside Diameter | 4.625 INCHES IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 3020-01-216-4175 is a Gear,spur, manufactured by American Turbo Systems Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-216-4175 has 2 manufacturer part numbers on file: 101448-1 (Walker Power Systems, Inc. Dba Tiernay Turbines), 101448-1 (American Turbo Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 1560-01-577-4253. Verify interchangeability with system specifications before substitution.
Key specifications for 101448-1: Bore Nominal Diameter: 1.378 INCHES BOTH ENDS IN; Teeth Quantity: 109; Nominal Overall Length: 1.145 INCHES IN; Nominal Outside Diameter: 4.625 INCHES IN. 6 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.