The Gear,spur, cataloged under National Stock Number 3020-00-246-9983, 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 Designatronics Inc Perfect Gear and Instrument Div. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-246-9983 |
| Primary Part Number | G66S90 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Designatronics Inc Perfect Gear and Instrument Div |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 SETSCREW |
| Bore Nominal Diameter | 0.187 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.375 INCHES FIRST END IN |
| Backlash Designation | GRADE C |
| Teeth Quantity | 90 |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.219 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-S-763,CLASS303 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.9365 INCHES MINIMUM AND 0.9375 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 0.957 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 303 OVERALL |
| Face Nominal Width | 0.187 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 |
|---|---|
| G66S90 PRIMARY | Designatronics Inc Perfect Gear and Instrument Div (USA) |
| E34-90 PRIMARY | Designatronics Incorporated Div Sterling Instruments Div (USA) |
| GP60-90 PRIMARY | Secs Inc (USA) |
| 10670740 | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 419361-1090 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 3020-00-246-9983 is a Gear,spur, manufactured by Designatronics Inc Perfect Gear and Instrument Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-246-9983 has 4 manufacturer part numbers on file: G66S90 (Designatronics Inc Perfect Gear and Instrument Div), E34-90 (Designatronics Incorporated Div Sterling Instruments Div), GP60-90 (Secs Inc), 10670740 (Us Army Aviation and Missile Command).
Key specifications for G66S90: Furnished Items and Quantity: 1 SETSCREW; Bore Nominal Diameter: 0.187 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.375 INCHES FIRST END IN; Backlash Designation: GRADE C. 20 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.