The Starter,engine,electrical, cataloged under National Stock Number 2920-00-640-7607, is classified within Federal Supply Class 2920 (Engine Electrical System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Prestolite Electric Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2920-00-640-7607 |
| Primary Part Number | MAY4131M |
| Item Name | Starter,engine,electrical |
| FSC / FSG | 2920 / 29 — Engine Electrical System Components, Nonaircraft |
| Manufacturer | Prestolite Electric Inc |
| Status | ACTIVE |
| Armature Actuation Device Type | RELAY |
| Voltage in Volts | 12.0 |
| Engaging Mechanism Opening Angular Deviation in Deg | 155.0 |
| Mounting Hole Diameter | 0.484 INCHES NOMINAL IN |
| Shaft Rotation Direction | CLOCKWISE |
| Mounting Flange Shape Style | OVAL |
| Engaging Mechanism to Armature Positional Relationship | STRAIGHT |
| Mounting Flange Angular Deviation in Deg | 55.0 |
| Mounting Hole Circle Radius | 2.062 INCHES NOMINAL IN |
| Lock Test Current Rating in Amps | 175.0 |
| Engaging Mechanism Style | PERIPHERAL OUTBOARD GEAR DRIVE W/WORM SHAFT AND TORSION DRIVE SPRING W/DRIVE HOUSING |
| Terminal Type and Quantity | 1 THREADED STUD |
| 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 |
|---|---|
| MAY4131M PRIMARY | Prestolite Electric Inc (USA) |
| Reference | Meaning |
|---|---|
| MAY4131M | 5/9 Secondary reference Prestolite Electric Inc |
NSN 2920-00-640-7607 is a Starter,engine,electrical, manufactured by Prestolite Electric Inc, classified under FSC 2920, Engine Electrical System Components, Nonaircraft. Status: active.
NSN 2920-00-640-7607 has 1 manufacturer part number on file: MAY4131M (Prestolite Electric Inc).
Key specifications for MAY4131M: Armature Actuation Device Type: RELAY; Voltage in Volts: 12.0; Engaging Mechanism Opening Angular Deviation in Deg: 155.0; Mounting Hole Diameter: 0.484 INCHES NOMINAL IN. 12 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.