The Pulley,groove, cataloged under National Stock Number 3020-01-443-0293, 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 Emerson Electric Co Browning Mfg Div. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-443-0293 |
| Primary Part Number | 2BK80X 1 7/16 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Emerson Electric Co Browning Mfg Div |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Securing Method | THREADED HOLE(S) |
| Bore Length | 2.094 INCHES NOMINAL IN |
| Design Form | SPOKED |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Groove Shape | V |
| Outside Diameter | 7.750 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 7.0000 INCHES NOMINAL IN |
| Groove Depth | 0.344 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 2 |
| V Groove Angle in Deg | 40.0 |
| Distance From Center of Bore to Bottom of Keyway | 0.907 INCHES NOMINAL IN |
| Securing Hole Quantity | 1 |
| Thread Size | 1/2-13 |
| Keyway Width | 0.375 INCHES NOMINAL IN |
| Distance From Outside Flange/rim to Hub End and Location | 0.344 INCHES NOMINAL AA END AND 0.500 INCHES NOMINAL BB END IN |
| Hole Location | OVER KEYWAY |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 1.438 INCHES NOMINAL IN |
| Material | IRON CAST OVERALL |
| Furnished Items | KEYING FACILITY |
| Face Width | 1.750 INCHES NOMINAL IN |
| 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 |
|---|---|
| 2BK80X 1 7/16 PRIMARY | Emerson Electric Co Browning Mfg Div (USA) |
| 1173-00-B PC5 | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
| Reference | Meaning |
|---|---|
| 2BK80 X 1.438 | 3/9 Design control — primary reference Emerson Electric Co Browning Mfg Div |
NSN 3020-01-443-0293 is a Pulley,groove, manufactured by Emerson Electric Co Browning Mfg Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-443-0293 has 2 manufacturer part numbers on file: 2BK80X 1 7/16 (Emerson Electric Co Browning Mfg Div), 1173-00-B PC5 (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil).
Key specifications for 2BK80X 1 7/16: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Securing Method: THREADED HOLE(S); Bore Length: 2.094 INCHES NOMINAL IN. 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.