The Pulley,groove, cataloged under National Stock Number 3020-01-418-4078, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-418-4078 |
| 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 | 5.124 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Shape | V |
| Outside Diameter | 58.000 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-A-200/8, ALLOY 6061 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/11, ALLOY 6061, T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 3 |
| V Groove Angle in Deg | 42.0 |
| Surface Treatment | ANODIZE |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 55.160 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Face Width | 5.124 INCHES NOMINAL IN |
| Groove Width | 0.500 INCHES NOMINAL IN |
| Furnished Items and Quantity | 32 FLAT WASHER, 32 LOCK WASHER, 32 CAP SCREW, 1 CONN LINK SPRING CLIP, 1 ROLLER CHAIN, 8 RING |
| 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 |
|---|---|
| 5749813-013 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 568-5749813 FIND 11 | D/9 Drawing number reference only Naval Sea Systems Command |
| 5749813-013 | 3/9 Design control — primary reference Textron Systems Corp |
| 568-5749813 | 5/9 Secondary reference Naval Sea Systems Command |
| 5759813-013 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 3020-01-418-4078 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-418-4078: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED; Bore Length: 5.124 INCHES NOMINAL IN. 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.