P5004 - Cremation Retort Igniter — 1/2" NPT x 3.75"
P5004 - Cremation Retort Igniter — 1/2" NPT x 3.75"
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U.S.-manufactured spark igniter for cremation retort and incinerator burners. Use the measurements below to compare this standard U.S. Ignition build with the part in hand.
Identification measurements
| Manufacturer part number | P5004 |
|---|---|
| Mounting thread | 1/2-14 NPT |
| A — overall/reference length | 6.22 in |
| B — length below the mount | 3.75 in |
| Hex size | 7/8 in |
| Terminal thread | 8-32 NC |
| Lower insulator length | 0.49 in |
| Electrode diameter | 0.125 in |
| Electrode gap (drawing) | 0.09 in |
How to compare: Verify the mounting thread first. In the manufacturer drawing, A is the overall/reference length and B is the length below the mounting reference. Also compare the hex, terminal, lower-insulator length, electrode diameter, and electrode gap. Do not rely on a product photo or printed part number alone; U.S. Ignition offers custom labeling and alternative lengths.
Verified cross-references
Auburn I-64-3 · Crown CA477
U.S. Ignition states that its igniters and flame rods use 96% alumina ceramic and Kanthal D electrodes and are 100% tested before shipment.
Keep one on the shelf — a failed igniter means no light-off.
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