NGK standard plugs are constructed for longer life and optimum performance.
Features:
- Trivalent metal plating provides superior anti-corrosion and anti-seizing properties.
 - Corrugated ribs prevent flashover.
 - Pure alumina silicate ceramic insulator provides superior strength and better heat transfer.
 - Copper core aids in heat removal.
 - Triple seals prevent leakage.
 
Specifications:
- Sh ell Thread Diameter: 10mm
 - Thread Pitch: 1.0mm
 - Seat Type: Gasket
 - Reach: 12.7mm (1/2")
 - Hex Size: 5/8" (16mm)
 - Terminal Type: Solid
 - Gap: .035" (0.9mm)
 - Center Electrode:
 - Material: Nickel
 - Type: Standard
 - Size: 2.5mm
 - Projection: Non-Projected
 - Resistor Value: 1K Ohm
 - Heat Range: 6
 - Torque Specs:
- Cast Iron: 7.2–10.8 lb. ft.
 - Aluminium: 7.2–8.7 lb. ft.