Model: RB312S

Spark Plug

Properties:

Body Style
Electrically shielded, full insulator, gasket seat
Reach Length
0.625 inches
Usage Design
Engine other than aircraft
Width Across Flats
0.937 inches
Electrode Style
Two flat ground electrode
Thread Size And Series/type Designator And Location
7/8-18 uns base
Mean Effective Pressure Rating
245.0 pounds per square inch
Seat Major Diameter
1.125 inches
Height Above Mounting Surface
2.625 inches
Top To Terminal Contact Distance
1.000 inches
Top To Shield Thread Distance
0.125 inches
Shield Thread Length
0.500 inches
Terminal Sleeve Inside Diameter
0.378 inches
Nondefinitive Specification/std Data
2 type and a class
NSN
2920-00-075-5121
Part Number
RB312S
Description
Spark Plug
CAGE
05045

An item containing two or more electrodes across which an electric spark is discharged to ignite a fuel and air mixture, primarily in internal combustion engines. Excludes glow plug; and electrode.

Part RB312S NSN 2920-00-075-5121

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00294
FIIG:
A10400
Concept No.:
App. Key:
A
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 8511100000
  • SITC: 77831
  • End Use: Engines and engine parts (carburetors, pistons, rings, and valves)
  • NAICS: 336320
  • USDA: 1

Freight Class: Spark plugs for internal combustion engines

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