The Gear,helical, cataloged under National Stock Number 3020-01-270-6504, 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 W S Darley & Co. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-270-6504 |
| Primary Part Number | 2702823 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | W S Darley & Co |
| Status | ACTIVE |
| Bore Style | W/ KEYWAY BOTH ENDS |
| 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 |
|---|---|
| 051-00001-59 | Kovatch Corp. (USA) |
| H359-53 | W S Darley & Co (USA) |
| 2702823 PRIMARY | W S Darley & Co (USA) |
| Reference | Meaning |
|---|---|
| J95-23 | 3/9 Design control — primary reference W S Darley & Co |
| H359 | D/9 Drawing number reference only W S Darley & Co |
| J95 | 5/9 Secondary reference W S Darley & Co |
| 51-00001-59 | 5/9 Secondary reference Kovatch Corp. |
NSN 3020-01-270-6504 is a Gear,helical, manufactured by W S Darley & Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-270-6504 has 3 manufacturer part numbers on file: 051-00001-59 (Kovatch Corp.), H359-53 (W S Darley & Co), 2702823 (W S Darley & Co).
1 possible match (shared part number, not a government interchangeability claim): 1670-01-431-0730. Verify interchangeability with system specifications before substitution.
Key specifications for 2702823: Bore Style: W/ KEYWAY BOTH ENDS. 1 specification is 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.