The Belt,positive Drive, cataloged under National Stock Number 3030-01-221-1551, is classified within Federal Supply Class 3030 (Belting, Drive Belts, Fan Belts, and Accessories) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3030-01-221-1551 |
| Primary Part Number | 1807035-33 |
| Item Name | Belt,positive Drive |
| FSC / FSG | 3030 / 30 — Belting, Drive Belts, Fan Belts, and Accessories |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Strengthening Feature | STEEL CORD |
| Drive Type and Quantity | 320 PIN |
| Style Designator | POSITIVE DRIVE, ROUND |
| Surface Condition | SMOOTH OVERALL |
| Nominal Pitch Distance | 0.157 INCHES IN |
| Nominal Width | 0.203 INCHES IN |
| Material | PLASTIC POLYURETHANE BODY |
| Nominal Pitch Length | 50.250 INCHES 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 |
|---|---|
| 1807035-33 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| PL1806903 FIND4 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 3TDF-320-E | 5/9 Secondary reference W. M. Berg, Inc. |
| PL1806903 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 3030-01-221-1551 is a Belt,positive Drive, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3030, Belting, Drive Belts, Fan Belts, and Accessories. Status: active.
NSN 3030-01-221-1551 has 2 manufacturer part numbers on file: 1807035-33 (Northrop Grumman Systems Corporation), PL1806903 FIND4 (Northrop Grumman Systems Corporation).
3 possible matches (shared part number, not a government interchangeability claim): 3020-01-221-1552, 3040-01-221-2022, 2030-01-240-6160. Verify interchangeability with system specifications before substitution.
Key specifications for 1807035-33: Strengthening Feature: STEEL CORD; Drive Type and Quantity: 320 PIN; Style Designator: POSITIVE DRIVE, ROUND; Surface Condition: SMOOTH OVERALL. 8 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.