The Gear,antibacklash,spur, cataloged under National Stock Number 3020-01-328-1846, 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 Northrop Grumman Systems Corporation. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Gear,antibacklash,spur |
| FSC / FSG | 3020 — Gears, Pulleys, Sprockets, and Transmission Chain (FSG 30) |
| Manufacturers | Southern Gear & Machine Inc (CAGE 01351); Northrop Grumman Systems Corporation (CAGE 03956) |
| Parameter | Value |
|---|---|
| NSN | 3020-01-328-1846 |
| Primary Part Number | PL1977611 FIND NO 12 |
| Item Name | Gear,antibacklash,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| 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 |
|---|---|
| MAB150-SS32CT/.1873/P2 | Southern Gear & Machine Inc (USA) |
| PL1977611 FIND NO 12 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1858751 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| PL1977611 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 3020-01-328-1846 is a Gear,antibacklash,spur, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-328-1846 has 2 manufacturer part numbers on file: MAB150-SS32CT/.1873/P2 (Southern Gear & Machine Inc), PL1977611 FIND NO 12 (Northrop Grumman Systems Corporation).
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.