The Pulley,groove, cataloged under National Stock Number 3020-00-221-8669, 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 Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 28 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-221-8669 |
| Primary Part Number | 40-2080911 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Securing Method | DRILLED HOLE |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.051 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | OFFSET |
| Groove Shape | V |
| Outside Diameter | 4.320 INCHES MINIMUM AND 4.370 INCHES MAXIMUM IN |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 4.250 INCHES NOMINAL IN |
| Groove Depth | 0.562 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| V Groove Angle in Deg | 36.0 |
| Securing Hole Quantity | 4 |
| Bolt Circle Diameter | 2.000 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.328 INCHES NOMINAL IN |
| Distance From Outside Flange/rim to Hub End and Location | 2.093 INCHES NOMINAL AA END AND 2.855 INCHES NOMINAL BB END IN |
| Hole Location | LOCATED ON END OF HUB EQUALLY SPACED |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 1.309 INCHES MINIMUM AND 1.313 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Face Width | 0.813 INCHES NOMINAL IN |
| Groove Width | 0.500 INCHES NOMINAL IN |
| Securing Location | AA END |
| Lightening Hole | NOT INCLUDED |
| 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 |
|---|---|
| 40-2080911 PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 40-2080911 | 5/9 Secondary reference Hercules Engine Co Inc |
| 287372B | 5/9 Secondary reference Hercules Engine Co Inc |
NSN 3020-00-221-8669 is a Pulley,groove, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-221-8669 has 1 manufacturer part number on file: 40-2080911 (Brinkley Technology Group Llc Dba Hercules Manufacturing).
Key specifications for 40-2080911: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Securing Method: DRILLED HOLE; Split Hub Feature: NOT INCLUDED. 28 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.