The Housing,gear Worm, cataloged under National Stock Number 3020-01-125-9995, 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 Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-125-9995 |
| Primary Part Number | 520-4674703 ITEM 2 |
| Item Name | Housing,gear Worm |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | COPPER-NICKEL MIL-C-20159 TY 1;15.750 IN. O/A LG;POLYTETRAFLUOROETHYLENE COATED;125.0 AND 32.0 MICROINCH FINISH;15 MTG HOLES IN |
| 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 |
|---|---|
| 520-4674703 ITEM 2 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 520-4674703 | D/9 Drawing number reference only U.S. Government activity |
| 87611-1417 | D/9 Drawing number reference only U.S. Government activity |
| 4674703-0002 | 3/2 Design control — primary reference U.S. Government activity |
| 87611-1417 ITEM 2 | 5/9 Secondary reference U.S. Government activity |
| 520-4674703 ITE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 87611-1417 ITEM 2 | 5/9 Secondary reference Oceanetics Inc |
NSN 3020-01-125-9995 is a Housing,gear Worm, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-125-9995 has 1 manufacturer part number on file: 520-4674703 ITEM 2 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-192-7179. Verify interchangeability with system specifications before substitution.
Key specifications for 520-4674703 ITEM 2: General Characteristics Item Description: COPPER-NICKEL MIL-C-20159 TY 1;15.750 IN. O/A LG;POLYTETRAFLUOROETHYLENE COATED;125.0 AND 32.0 MICROINCH FINISH;15 MTG HOLES IN. 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.