Model #MILS7886

Spark plug (NSN 2925-00-056-7058)

Special Features
Fine wire (platinum) electrodes, 0.015 in. Min, 0.018 in. Max gap

Body Style

Electrically shielded, partial insulator, gasket seat

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

3/4-20 unef shielding

Thread Size And Series/type Designator And Location

18-1.5mm base

Seat Major Diameter

Between 0.950 inches and 0.970 inches

Height Above Mounting Surface

Between 2.438 inches and 2.562 inches

Top To Terminal Contact Distance

Between 1.480 inches and 1.570 inches

Top To Shield Thread Distance

Between 0.105 inches and 0.145 inches

Shield Thread Length

0.335 inches

Barrel Inside Diameter

Between 0.555 inches and 0.565 inches

Terminal Sleeve Inside Diameter

Between 0.378 inches and 0.398 inches

Nondefinitive Specification/std Data

1 type

Description

Spark Plug

Cage Code

81349

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