The Generator,engine Accessory, cataloged under National Stock Number 2920-00-477-3440, is classified within Federal Supply Class 2920 (Engine Electrical System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 30 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2920-00-477-3440 |
| Primary Part Number | 7S9782 |
| Item Name | Generator,engine Accessory |
| FSC / FSG | 2920 / 29 — Engine Electrical System Components, Nonaircraft |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Distance Between Shaft Center and Bottom Mounting Hole Center | 3.875 INCHES NOMINAL IN |
| Shaft Drive End Style | STRAIGHT SHAFT END, THREADED, W/KEYWAY |
| Distance Between Outside Surfaces of Hinge Bracket | 10.120 INCHES MINIMUM AND 10.182 INCHES MAXIMUM IN |
| Grounding Method | EXTERNAL |
| Thread Series | UNF |
| Distance From End to Keyway Center | 1.325 INCHES NOMINAL IN |
| Distance Between Inside Surfaces of Hinge Bracket | 9.020 INCHES MINIMUM AND 9.042 INCHES MAXIMUM IN |
| Thread Length | 0.730 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN |
| Bottom Mounting Hole Diameter | 0.514 INCHES MINIMUM AND 0.524 INCHES MAXIMUM IN |
| Mounting Style | BRACKET MTD W/THREE MTG HOLES, TOP HOLE THREADED |
| Voltage in Volts | 24.0 |
| Thread Diameter | 0.625 INCHES NOMINAL IN |
| Armature Minimum Speed in RPM at Full Current Output | 1720 |
| Shaft Rotation Direction | CLOCKWISE |
| Mounting Hole Thread Class | 2B |
| Angular Deviation of First Hole From Top Center in Deg | 193.0 |
| Mounting Hole Thread Diameter | 0.375 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Second Step Diameter | 0.874 INCHES NOMINAL IN |
| Mounting Hole Thread Direction | RIGHT-HAND |
| Keyway Length | 0.750 INCHES NOMINAL IN |
| Distance Between Shaft Center and Top Mounting Hole Center | 3.880 INCHES NOMINAL IN |
| Mounting Hole Thread Quantity Per Inch | 16 |
| Keyway Width | 0.156 INCHES NOMINAL IN |
| Ground Polarity Type | NEGATIVE OR POSITIVE |
| Thread Quantity Per Inch | 18 |
| Submersibility | NONSUBMERSIBLE |
| Maximum Output Current Rating in Amps | 20.0 |
| Furnished Items | COOLING FAN AND WOODRUFF KEY |
| Unthreaded Portion Length | 1.320 INCHES NOMINAL 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 |
|---|---|
| 7S9782 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 4M9102 | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 1106971 | 5/9 Secondary reference General Motors Corp |
| IPD4M9102 | 5/9 Secondary reference Industrial Parts Depot, Llc Dba Ipd |
| 1106971 | 5/9 Secondary reference General Motors Corp Delco Remy Div |
| 1106971 | 5/9 Secondary reference General Motors Corp AC-Delco Div Government Order Dept |
NSN 2920-00-477-3440 is a Generator,engine Accessory, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2920, Engine Electrical System Components, Nonaircraft. Status: active.
NSN 2920-00-477-3440 has 2 manufacturer part numbers on file: 7S9782 (Caterpillar Inc Div Caterpillar Defense), 4M9102 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 7S9782: Distance Between Shaft Center and Bottom Mounting Hole Center: 3.875 INCHES NOMINAL IN; Shaft Drive End Style: STRAIGHT SHAFT END, THREADED, W/KEYWAY; Distance Between Outside Surfaces of Hinge Bracket: 10.120 INCHES MINIMUM AND 10.182 INCHES MAXIMUM IN; Grounding Method: EXTERNAL. 30 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.