The Pulley,groove, cataloged under National Stock Number 3020-01-443-6249, 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 Schroeder Industries Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-443-6249 |
| Primary Part Number | ATB-633-2 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Schroeder Industries Llc |
| Status | ACTIVE |
| Bore Feature | INCLUDED |
| Groove Shape | V |
| Bearings | INCLUDED |
| Bearing Type | SLEEVE |
| 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 |
|---|---|
| D-4232 ITEM 176 | Schroeder Industries Llc (USA) |
| ATB-633-2 PRIMARY | Schroeder Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| TB-633-2 | C/1 Advisory reference — outside the item-of-supply concept Schroeder Industries Llc |
NSN 3020-01-443-6249 is a Pulley,groove, manufactured by Schroeder Industries Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-443-6249 has 2 manufacturer part numbers on file: D-4232 ITEM 176 (Schroeder Industries Llc), ATB-633-2 (Schroeder Industries Llc).
Key specifications for ATB-633-2: Bore Feature: INCLUDED; Groove Shape: V; Bearings: INCLUDED; Bearing Type: SLEEVE. 4 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.