The Pulley,groove, cataloged under National Stock Number 3020-01-084-8530, 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 Carlisle Power Transmission Products Inc. Government technical data includes 27 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-084-8530 |
| Primary Part Number | 4BQ54 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Carlisle Power Transmission Products Inc |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Taper Bore Minor Diameter | 2.109 INCHES NOMINAL IN |
| Securing Method | SPLIT-TAPERED BUSHING |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.250 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | OFFSET |
| Groove Shape | V |
| Standard V-Belt Section Designation for Which Designed | A AND B |
| Outside Diameter | 5.750 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 5.000 INCHES MINIMUM AND 5.400 INCHES MAXIMUM IN |
| Groove Depth | 0.612 INCHES NOMINAL IN |
| Bore Type | TAPERED |
| Bearings | NOT INCLUDED |
| Groove Quantity | 4 |
| Taper Bore Major Diameter | 2.188 INCHES NOMINAL IN |
| V Groove Angle in Deg | 34.0 |
| Surface Treatment | PAINT |
| Distance From Outside Flange/rim to Hub End and Location | 1.312 INCHES NOMINAL AA END AND 0.688 INCHES NOMINAL BB END IN |
| Counterbore Feature | NOT INCLUDED |
| Material | IRON CAST OVERALL |
| Face Width | 3.250 INCHES NOMINAL IN |
| Groove Width | 0.612 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 |
|---|---|
| 4B54SD | Emerson Electric Co Browning Mfg Div (USA) |
| 544B | TB Woods's Corporation (USA) |
| 4BQ54 PRIMARY | Carlisle Power Transmission Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 5.4 X 4B | 5/9 Secondary reference TB Woods's Corporation |
| 4B54 | 5/9 Secondary reference Eaton Corp Industrial Drives Operations |
| 67164-4054 | C/1 Advisory reference — outside the item-of-supply concept Tld Ace Corp Div Tld Ace |
| 4B54 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 4BQ54 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-084-8530 is a Pulley,groove, manufactured by Carlisle Power Transmission Products Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-084-8530 has 3 manufacturer part numbers on file: 4B54SD (Emerson Electric Co Browning Mfg Div), 544B (TB Woods's Corporation), 4BQ54 (Carlisle Power Transmission Products Inc).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-549-8224. Verify interchangeability with system specifications before substitution.
Key specifications for 4BQ54: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Taper Bore Minor Diameter: 2.109 INCHES NOMINAL IN; Securing Method: SPLIT-TAPERED BUSHING. 27 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.