The Gear,antibacklash,spur, cataloged under National Stock Number 3020-01-166-3289, 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 Southern Gear & Machine Inc. Government technical data includes 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-166-3289 |
| Primary Part Number | AB650-176/CT1875P2 |
| Item Name | Gear,antibacklash,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Southern Gear & Machine Inc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.187 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.563 INCHES FIRST END IN |
| Teeth Quantity | 176 |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 12 |
| Nominal Overall Length | 0.4375 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Tooth Form | STANDARD |
| Hub Style Designator | SPLIT FIRST END |
| Surface Treatment | PASSIVATE HUB |
| Surface Treatment | ANODIZE SECOND GEAR |
| Surface Treatment | ANODIZE FIRST GEAR |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY FIRST GEAR |
| Material | STEEL CORROSION RESISTING SPRING |
| Material | STEEL CORROSION RESISTING HUB |
| Face Nominal Width | 0.125 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 |
|---|---|
| AB650-176/CT1875P2 PRIMARY | Southern Gear & Machine Inc (USA) |
NSN 3020-01-166-3289 is a Gear,antibacklash,spur, manufactured by Southern Gear & Machine Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-166-3289 has 1 manufacturer part number on file: AB650-176/CT1875P2 (Southern Gear & Machine Inc).
Key specifications for AB650-176/CT1875P2: Bore Nominal Diameter: 0.187 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.563 INCHES FIRST END IN; Teeth Quantity: 176; Bore Style: PLAIN BOTH ENDS. 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.