The Pulley,timing Belt, cataloged under National Stock Number 3020-01-138-6650, 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 Div Stock Drive Products. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-138-6650 |
| Primary Part Number | A6A3RL3881-1 |
| Item Name | Pulley,timing Belt |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Designatronics Inc Div Stock Drive Products |
| Status | ACTIVE |
| Hub Type | SETSCREW |
| Hub Diameter | 0.438 INCHES NOMINAL IN |
| Face Type | SINGLE ROW SPROCKET TEETH |
| Material Document and Classification | QQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Bore Type | SPECIFIED |
| Face Groove/tooth Quantity | 11 |
| Surface Treatment | ANODIZE |
| Bore Diameter | 0.688 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 |
| Face Width | 0.438 INCHES NOMINAL 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 |
|---|---|
| A6A3RL3881-1 PRIMARY | Designatronics Inc Div Stock Drive Products (USA) |
| 0841430004 | Riimic, Llc Dba Sunair Electronics (USA) |
| Reference | Meaning |
|---|---|
| RL3881-1 | 5/9 Secondary reference Designatronics Inc Div Stock Drive Products |
| A6A3RL388-1 | 5/9 Secondary reference Designatronics Inc Div Stock Drive Products |
NSN 3020-01-138-6650 is a Pulley,timing Belt, manufactured by Designatronics Inc Div Stock Drive Products, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-138-6650 has 2 manufacturer part numbers on file: A6A3RL3881-1 (Designatronics Inc Div Stock Drive Products), 0841430004 (Riimic, Llc Dba Sunair Electronics).
Key specifications for A6A3RL3881-1: Hub Type: SETSCREW; Hub Diameter: 0.438 INCHES NOMINAL IN; Face Type: SINGLE ROW SPROCKET TEETH; Material Document and Classification: QQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE. 10 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.