The Gear Assembly,speed Decreaser, cataloged under National Stock Number 3010-01-203-7315, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 7 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 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 | 3010-01-203-7315 |
| Primary Part Number | U4-6 |
| Item Name | Gear Assembly,speed Decreaser |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Roller Bearing Co of America, Inc Div Pic Design |
| Status | ACTIVE |
| Input Shaft Quantity | 1 |
| Design Type | SINGLE REDUCTION |
| Input Shaft Type | STRAIGHT |
| Shaft Position | SHAFTS EXTEND 0.500 IN FROM BOTH ENDS IN |
| Total Ratio | 15.27 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 |
|---|---|
| U4-6 PRIMARY | Roller Bearing Co of America, Inc Div Pic Design (USA) |
NSN 3010-01-203-7315 is a Gear Assembly,speed Decreaser, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-203-7315 has 1 manufacturer part number on file: U4-6 (Roller Bearing Co of America, Inc Div Pic Design).
1 possible match (shared part number, not a government interchangeability claim): 6520-01-460-7069. Verify interchangeability with system specifications before substitution.
Key specifications for U4-6: Input Shaft Quantity: 1; Design Type: SINGLE REDUCTION; Input Shaft Type: STRAIGHT; Shaft Position: SHAFTS EXTEND 0.500 IN FROM BOTH ENDS IN. 7 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.