Model #AC181

Spark plug (NSN 2925-00-142-8731)

Body Style

Electrically shielded, full insulator, gasket seat

Dc Resistance Rating In Ohms

1500.0

Reach Length

Between 0.792 inches and 0.812 inches

Usage Design

Aircraft engine

Width Across Flats

Between 0.870 inches and 0.878 inches

Electrode Style

Two flat ground electrode

Thread Size And Series/type Designator And Location

5/8-24 unef shielding

Thread Size And Series/type Designator And Location

18-1.5mm base

Mean Effective Pressure Rating

340.0 pounds per square inch

Seat Major Diameter

0.960 inches

Height Above Mounting Surface

Between 2.188 inches and 2.312 inches

Top To Terminal Contact Distance

Between 1.000 inches and 1.070 inches

Top To Shield Thread Distance

Between 0.105 inches and 0.145 inches

Shield Thread Length

0.375 inches

Terminal Sleeve Inside Diameter

Between 0.378 inches and 0.388 inches

Description

Spark Plug

Cage Code

7X677

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