The Gear,spur, cataloged under National Stock Number 3020-00-043-2237, 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 Astronautics Corporation of America. 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. 2 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 | 3020-00-043-2237 |
| Primary Part Number | 100733-1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Astronautics Corporation of America |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.375 INCHES COUNTERBORE FIRST END IN |
| Backlash Designation | GRADE E |
| Teeth Quantity | 66 |
| Body Style | WEBBED, SOLID |
| Counterbore Nominal Diameter | 0.560 INCHES COUNTERBORE FIRST END IN |
| Bore Style | W/COUNTERBORE COUNTERBORE FIRST END |
| Precision Classification | QUALITY NUMBER 13 |
| Style Designator | HUBLESS, RECESSED BODY |
| Material Document and Classification | MIL-S-7720,COMP 303S MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.6875 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 0.708 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 303 OVERALL |
| Counterbore Nominal Depth | 0.016 INCHES COUNTERBORE FIRST END IN |
| Body Recess Nominal Depth | 0.016 INCHES FIRST END IN |
| Face Nominal Width | 0.109 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 |
|---|---|
| 100733-1 PRIMARY | Astronautics Corporation of America (USA) |
NSN 3020-00-043-2237 is a Gear,spur, manufactured by Astronautics Corporation of America, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-043-2237 has 1 manufacturer part number on file: 100733-1 (Astronautics Corporation of America).
2 possible matches (shared part number, not a government interchangeability claim): 5365-00-094-1428, 5998-00-453-2086. Verify interchangeability with system specifications before substitution.
Key specifications for 100733-1: Bore Nominal Diameter: 0.375 INCHES COUNTERBORE FIRST END IN; Backlash Designation: GRADE E; Teeth Quantity: 66; Body Style: WEBBED, SOLID. 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.