Model #SH20A

Spark plug (NSN 2925-00-580-4931)

Special Features
Item is used on army trucks
Body Style
Electrically shielded, partial insulator, gasket seat
Dc Resistance Rating In Ohms
Reach Length
Between 0.527 inches and 0.562 inches
Usage Design
Aircraft engine
Width Across Flats
Between 0.870 inches and 0.878 inches
Electrode Style
Triple gap ground electrode
Thread Size And Series/type Designator And Location
18-1.5mm base and 5/8-24 unef shielding
Seat Major Diameter
0.965 inches
Height Above Mounting Surface
Between 2.500 inches and 2.624 inches
Top To Terminal Contact Distance
Between 1.000 inches and 1.070 inches
Top To Shield Thread Distance
0.120 inches
Shield Thread Length
0.250 inches
Barrel Inside Diameter
Between 0.459 inches and 0.479 inches
Terminal Sleeve Inside Diameter
Between 0.378 inches and 0.388 inches
Spark Plug
Cage Code

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Updated: 07/14/2020