The Tester,spark Plug, cataloged under National Stock Number 4910-01-474-2283, is classified within Federal Supply Class 4910 (Motor Vehicle Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Brunswick Corp Mariner Outboards Div. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4910-01-474-2283 |
| Primary Part Number | 91-850439T 1 |
| Item Name | Tester,spark Plug |
| FSC / FSG | 4910 / 49 — Motor Vehicle Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Brunswick Corp Mariner Outboards Div |
| Status | ACTIVE |
| 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 |
|---|---|
| 91-850439T 1 PRIMARY | Brunswick Corp Mariner Outboards Div (USA) |
| Reference | Meaning |
|---|---|
| 91-850439T | 5/9 Secondary reference Brunswick Corp Mariner Outboards Div |
| 91-850439 | 5/9 Secondary reference Brunswick Corp Mariner Outboards Div |
NSN 4910-01-474-2283 is a Tester,spark Plug, manufactured by Brunswick Corp Mariner Outboards Div, classified under FSC 4910, Motor Vehicle Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4910-01-474-2283 has 1 manufacturer part number on file: 91-850439T 1 (Brunswick Corp Mariner Outboards Div).
1 possible match (shared part number, not a government interchangeability claim): 4910-01-511-9069. Verify interchangeability with system specifications before substitution.
Key specifications for 91-850439T 1: Special Features: MANUFACTURER ITEM NAME: SPARKPLUG TESTER; End Item Identification: MERCURY OUTBOARD MOTORS. 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.
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.