The Gear,antibacklash,spur, cataloged under National Stock Number 3020-01-103-0203, 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 Malwin Electronics Corp.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-103-0203 |
| Primary Part Number | 900-0101-1 |
| Item Name | Gear,antibacklash,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Malwin Electronics Corp. |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.120 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.188 INCHES BOTH ENDS IN |
| Teeth Quantity | 36 |
| Clamping Surface Nominal Length | 0.172 INCHES FIRST END IN |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.547 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.072 INCHES SECOND END IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 0.5620 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | SPLIT FIRST END |
| Hub Style Designator | PLAIN SECOND END |
| Nominal Outside Diameter | 0.594 INCHES IN |
| Surface Treatment | CHROMATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM OVERALL |
| Attachment Method | CLAMP |
| Face Nominal Width | 0.100 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 |
|---|---|
| 900-0101-1 PRIMARY | Malwin Electronics Corp. (USA) |
| Reference | Meaning |
|---|---|
| 900-0101 | D/9 Drawing number reference only Malwin Electronics Corp. |
NSN 3020-01-103-0203 is a Gear,antibacklash,spur, manufactured by Malwin Electronics Corp., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-103-0203 has 1 manufacturer part number on file: 900-0101-1 (Malwin Electronics Corp.).
4 possible matches (shared part number, not a government interchangeability claim): 6615-01-263-2455, 5999-01-343-0874, 5325-01-408-0116. Verify interchangeability with system specifications before substitution.
Key specifications for 900-0101-1: Bore Nominal Diameter: 0.120 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.188 INCHES BOTH ENDS IN; Teeth Quantity: 36; Clamping Surface Nominal Length: 0.172 INCHES FIRST END IN. 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.