The Gear,spur, cataloged under National Stock Number 3020-00-563-3836, 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 Us Army Aviation and Missile Command. Government technical data includes 21 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 | 3020-00-563-3836 |
| Primary Part Number | 8171741 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Keyway Nominal Width | 0.062 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.241 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.469 INCHES FIRST END IN |
| Backlash Designation | GRADE C |
| Teeth Quantity | 90 |
| Surface Treatment Document and Classification | MIL-STD-171,FINISH NO. 5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.237 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 5 OR QUALITY NUMBER 6 |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-S-764,TYPE 416 COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.8750 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 1.196 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.167 INCHES BOTH ENDS IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL COMP 416 OVERALL |
| Face Nominal Width | 0.188 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 |
|---|---|
| 8171741 PRIMARY | Us Army Aviation and Missile Command (USA) |
NSN 3020-00-563-3836 is a Gear,spur, manufactured by Us Army Aviation and Missile Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-563-3836 has 1 manufacturer part number on file: 8171741 (Us Army Aviation and Missile Command).
Key specifications for 8171741: Keyway Nominal Width: 0.062 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.241 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.469 INCHES FIRST END IN; Backlash Designation: GRADE C. 21 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.