The Gear,spur, cataloged under National Stock Number 3020-01-018-7684, 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 Arrow Gear Llc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-018-7684 |
| Primary Part Number | A15D3720-1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Arrow Gear Llc |
| Status | ACTIVE |
| Teeth Quantity | 42 |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Hardness Rating | 59.0 ROCKWELL C MINIMUM AND 64.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 3.960 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS 6265 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.2000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 16 BOTH ENDS |
| Surface Treatment | OXIDE OVERALL |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A15D3720-1 PRIMARY | Arrow Gear Llc (USA) |
| A15D3720-1 | The Boeing Company (USA) |
NSN 3020-01-018-7684 is a Gear,spur, manufactured by Arrow Gear Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-018-7684 has 2 manufacturer part numbers on file: A15D3720-1 (Arrow Gear Llc), A15D3720-1 (The Boeing Company).
Key specifications for A15D3720-1: Teeth Quantity: 42; Body Style: PLAIN, WITH LIGHTENING HOLES; Hardness Rating: 59.0 ROCKWELL C MINIMUM AND 64.0 ROCKWELL C MAXIMUM OVERALL; Nominal Overall Length: 3.960 INCHES IN. 13 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.
NSN 3020-01-018-7684 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.