The Coil,ignition, cataloged under National Stock Number 2925-00-142-0641, is classified within Federal Supply Class 2925 (Engine Electrical System Components, Aircraft Prime Moving) of the Engine Accessories group. The manufacturer of record is Unison Industries Llc. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2925-00-142-0641 |
| Primary Part Number | 10-78840 |
| Item Name | Coil,ignition |
| FSC / FSG | 2925 / 29 — Engine Electrical System Components, Aircraft Prime Moving |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| High Voltage Terminal Quantity | 1 |
| Material Type | METALLIC ENCLOSURE |
| First Mounting Hole Diameter | 0.201 INCHES NOMINAL IN |
| Low Voltage Terminal Quantity | 1 |
| Diameter | 1.938 INCHES NOMINAL IN |
| Distance From Base of Coil to Mounting | 3.992 INCHES NOMINAL IN |
| Second Mounting Hole Diameter | 0.201 INCHES NOMINAL IN |
| DC Primary Voltage Rating | 14.0 VOLTS MINIMUM AND 29.0 VOLTS MAXIMUM |
| Height | 4.344 INCHES NOMINAL IN |
| Center to Center Distance Between First and Second Mounting Holes | 2.500 INCHES NOMINAL IN |
| Submersibility | NONSUBMERSIBLE |
| Mounting Removability | NONREMOVABLE |
| Filling Medium | COMPOUND |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 10-78840 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 10-78840 | 5/9 Secondary reference Amphenol Corp Div Amphenol Aerospace Operations |
NSN 2925-00-142-0641 is a Coil,ignition, manufactured by Unison Industries Llc, classified under FSC 2925, Engine Electrical System Components, Aircraft Prime Moving. Status: active.
NSN 2925-00-142-0641 has 1 manufacturer part number on file: 10-78840 (Unison Industries Llc).
Key specifications for 10-78840: High Voltage Terminal Quantity: 1; Material Type: METALLIC ENCLOSURE; First Mounting Hole Diameter: 0.201 INCHES NOMINAL IN; Low Voltage Terminal Quantity: 1. 13 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.
NSN 2925-00-142-0641 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.