The Pulley,flat, cataloged under National Stock Number 3020-01-396-7805, 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 Wiggins Lift Co Inc. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-396-7805 |
| Primary Part Number | 640101 |
| Item Name | Pulley,flat |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Wiggins Lift Co Inc |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Bearing Quantity | 2 |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.750 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Flange Quantity | 2 |
| Outside Diameter | 5.000 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Outside Diameter | 5.630 INCHES NOMINAL IN |
| Rim Type | SOLID |
| Bore Type | STRAIGHT |
| Bearings | INCLUDED |
| Bearing Type | BALL |
| Keying Facility | NOT INCLUDED |
| Flange Width | 0.185 INCHES NOMINAL IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 1.9685 INCHES NOMINAL IN |
| Flange Location | OUTSIDE |
| Crown Face | NOT INCLUDED |
| Face Width | 1.380 INCHES NOMINAL IN |
| Furnished Items and Quantity | ONE SNAP 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 |
| Part Number | Manufacturer |
|---|---|
| 640101 | Wiggins Lift Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 098634 | 3/9 Design control — primary reference Brudi Equipment Inc |
NSN 3020-01-396-7805 is a Pulley,flat, manufactured by Wiggins Lift Co Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-396-7805 has 1 manufacturer part number on file: 640101 (Wiggins Lift Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-528-9371. Verify interchangeability with system specifications before substitution.
Key specifications for 640101: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Bearing Quantity: 2; Split Hub Feature: NOT INCLUDED. 23 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.