The Lead,ab Ignition, cataloged under National Stock Number 2925-01-039-6856, 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. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2925-01-039-6856 |
| Primary Part Number | 10-516625-1 |
| Item Name | Lead,ab Ignition |
| FSC / FSG | 2925 / 29 — Engine Electrical System Components, Aircraft Prime Moving |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 10-516625-1 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 5040T43P01 | 3/9 Design control — primary reference U.S. Government activity |
| 5040T43 | D/9 Drawing number reference only U.S. Government activity |
| 10-516625-1 | 5/9 Secondary reference Amphenol Corp Div Amphenol Aerospace Operations |
| 5040T43P01 99207 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 2925-01-039-6856 is a Lead,ab Ignition, manufactured by Unison Industries Llc, classified under FSC 2925, Engine Electrical System Components, Aircraft Prime Moving. Status: active.
NSN 2925-01-039-6856 has 1 manufacturer part number on file: 10-516625-1 (Unison Industries Llc).
1 possible match (shared part number, not a government interchangeability claim): 2925-01-569-3795. Verify interchangeability with system specifications before substitution.
Key specifications for 10-516625-1: End Item Identification: RELOCATED AB IGNITER. 0 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 2925-01-039-6856 has DEMIL Code Q. 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.