The Gear,internal, cataloged under National Stock Number 3020-01-199-1920, 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 Hersey Measurement Co Div of Miller Industries Inc. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-199-1920 |
| Primary Part Number | BDN507B PIECE 17 |
| Item Name | Gear,internal |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hersey Measurement Co Div of Miller Industries Inc |
| Status | ACTIVE |
| Material | COPPER ALLOY 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 |
|---|---|
| BDN507B PIECE 17 PRIMARY | Hersey Measurement Co Div of Miller Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| BDN507B17 | C/1 Advisory reference — outside the item-of-supply concept Hersey Measurement Co Div of Miller Industries Inc |
| S4823D3197353 | D/9 Drawing number reference only U.S. Government activity |
| BDN507B | D/9 Drawing number reference only Hersey Measurement Co Div of Miller Industries Inc |
| S4823D3197353 PIECE 17 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-01-199-1920 is a Gear,internal, manufactured by Hersey Measurement Co Div of Miller Industries Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-199-1920 has 1 manufacturer part number on file: BDN507B PIECE 17 (Hersey Measurement Co Div of Miller Industries Inc).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-199-1929. Verify interchangeability with system specifications before substitution.
Key specifications for BDN507B PIECE 17: Material: COPPER ALLOY 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.