The Gear Assembly,speed Decreaser, cataloged under National Stock Number 3010-01-244-7300, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 6 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-244-7300 |
| Primary Part Number | 4Z289B-RAT 15 TO 1 |
| Item Name | Gear Assembly,speed Decreaser |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Design Type | SINGLE REDUCTION |
| Gear Type | WORM |
| Shaft Position | OUTPUT SHAFT EXTENDS TO RIGHT |
| Total Ratio | 15 TO 1 |
| Output Shaft Type | STRAIGHT |
| Output Shaft Quantity | 1 |
| 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 |
|---|---|
| 4Z289B-RAT 15 TO 1 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| Reference | Meaning |
|---|---|
| M0D 4Z289B-RAT | C/1 Advisory reference — outside the item-of-supply concept W.w. Grainger, Inc. Div Government Sales Division |
NSN 3010-01-244-7300 is a Gear Assembly,speed Decreaser, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-244-7300 has 1 manufacturer part number on file: 4Z289B-RAT 15 TO 1 (W.w. Grainger, Inc. Div Government Sales Division).
Key specifications for 4Z289B-RAT 15 TO 1: Design Type: SINGLE REDUCTION; Gear Type: WORM; Shaft Position: OUTPUT SHAFT EXTENDS TO RIGHT; Total Ratio: 15 TO 1. 6 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.