The Gear,helical, cataloged under National Stock Number 3020-01-270-3371, 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 Argo Turboserve Corporation Div Argo Turboserve Corp.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-270-3371 |
| Primary Part Number | NK-1687-1 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Argo Turboserve Corporation Div Argo Turboserve Corp. |
| Status | ACTIVE |
| Material | STEEL COMP 1118 OVERALL |
| 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 |
|---|---|
| NK-1687-1 | Argo Turboserve Corporation Div Argo Turboserve Corp. (USA) |
| Reference | Meaning |
|---|---|
| NK-1687 | 5/9 Secondary reference U.S. Government activity |
| NK-1687-1 | 3/9 Design control — primary reference U.S. Government activity |
| S-1097 PIECE 78 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-270-3371 is a Gear,helical, manufactured by Argo Turboserve Corporation Div Argo Turboserve Corp., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-270-3371 has 1 manufacturer part number on file: NK-1687-1 (Argo Turboserve Corporation Div Argo Turboserve Corp.).
Key specifications for NK-1687-1: End Item Identification: VALVE OPERATOR GIMPEL PART NO.S-1097; Material: STEEL COMP 1118 OVERALL. 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.