The Guard,mechanical Drive, cataloged under National Stock Number 3020-01-571-0324, 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 The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-571-0324 |
| Primary Part Number | 811-71 |
| Item Name | Guard,mechanical Drive |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C |
| Status | ACTIVE |
| 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 |
|---|---|
| 811-71 PRIMARY | The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C (USA) |
| Reference | Meaning |
|---|---|
| 811-71 | 3/9 Design control — primary reference Cleveland Gear Company, Inc. Dba Cleveland Gear Co |
NSN 3020-01-571-0324 is a Guard,mechanical Drive, manufactured by The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-571-0324 has 1 manufacturer part number on file: 811-71 (The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C).
Key specifications for 811-71: End Item Identification: STRAINER, 8.00 IPS. 0 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.