The Pulley,groove, cataloged under National Stock Number 3020-00-988-9604, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-988-9604 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 2.000 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.530 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 8.500 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | FED STD NO 66,AISI C1015 THROUGH C1025 OR SAE 1015 THROUGH SAE 1025 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Groove Depth | 1.250 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Counterbore Depth | 0.218 INCHES NOMINAL IN |
| Groove Quantity | 1 |
| Counterbore Location | BOTH ENDS |
| Counterbore Diameter | 6.250 INCHES NOMINAL IN |
| Surface Treatment | COPPER |
| Counterbore Feature | INCLUDED |
| Bore Diameter | 3.935 INCHES MINIMUM AND 3.936 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Face Width | 2.000 INCHES NOMINAL IN |
| Groove Width | 1.500 INCHES NOMINAL IN |
| 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 |
| Reference | Meaning |
|---|---|
| 202-1033-1 | 3/9 Design control — primary reference Pneumo Abex Corp |
NSN 3020-00-988-9604 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-988-9604: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED; Bore Length: 2.000 INCHES NOMINAL IN. 24 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.