The Pulley,groove, cataloged under National Stock Number 3020-00-377-2853, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 28 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-377-2853 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Distance From Center of Bore to Top of Key | 1.188 INCHES NOMINAL IN |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 3.312 INCHES NOMINAL AA END IN |
| Bore Feature | INCLUDED |
| Securing Method | THREADED HOLE(S) |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 5.000 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | OFFSET |
| Groove Shape | V |
| Outside Diameter | 9.000 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Shaft Size for Which Designed | 2.000 INCHES NOMINAL IN |
| Quantity | 1 |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 8.750 INCHES NOMINAL IN |
| Groove Depth | 0.625 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 2 |
| V Groove Angle in Deg | 34.0 |
| Protruding Hub Characteristic | PLAIN |
| Securing Hole Quantity | 2 |
| Thread Size | 0.312-18 |
| Keyway Width | 0.375 INCHES NOMINAL IN |
| Unable to Decode | UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 3.375 INCHES NOMINAL BB END IN |
| Hole Location | THRU BODY OF GEAR 180.0 APART |
| 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 |
|---|---|
| D6-940 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-377-2853 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3010-00-506-1302, 2925-00-724-1304. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-377-2853: Distance From Center of Bore to Top of Key: 1.188 INCHES NOMINAL IN; Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 3.312 INCHES NOMINAL AA END IN; Bore Feature: 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.