Model: R37S1

Spark Plug

Properties:

Body Style
Electrically shielded, full insulator, gasket seat
Dc Resistance Rating In Ohms
1000.0
Reach Length
Between 0.793 inches and 0.813 inches
Usage Design
Engine other than aircraft
Width Across Flats
0.875 inches
Electrode Style
Four gap ground electrode
Mean Effective Pressure Rating
330.0 pounds per square inch
Seat Major Diameter
0.970 inches
Height Above Mounting Surface
Between 2.125 inches and 2.375 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
0.250 inches
Terminal Sleeve Inside Diameter
Between 0.290 inches and 0.300 inches
NSN
2925-00-240-3905
Part Number
R37S1
Description
Spark Plug
CAGE
0AFL4

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 R37S1 NSN 2925-00-240-3905

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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