Model: B4S

Spark Plug

Properties:

Body Style
Electrically shielded, full insulator, gasket seat
Reach Length
Between 0.490 inches and 0.500 inches
Usage Design
Engine other than aircraft
Width Across Flats
0.875 inches
Electrode Style
B1 single flat shell ground electrode (see also style 4)
Electrode Style
Single flat shell ground electrode (see also style 4)
Mean Effective Pressure Rating
Between 180.0 pounds per square inch and 229.0 pounds per square inch
Seat Major Diameter
1.000 inches
Height Above Mounting Surface
Between 2.328 inches and 2.348 inches
Top To Terminal Contact Distance
1.000 inches
Top To Shield Thread Distance
0.125 inches
Shield Thread Length
0.375 inches
Terminal Sleeve Inside Diameter
Between 0.378 inches and 0.388 inches
Nondefinitive Specification/std Data
2 type and b class
NSN
2920-00-287-8818
Part Number
B4S
Description
Spark Plug
CAGE
26377

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 B4S NSN 2920-00-287-8818

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
177080
UFC:
87080
LTL:
RATING VARIABLE
LCL:
100.0
WCC:
583
TCC:
Z
SHC:
5
ACC:
Equipment for Aircraft

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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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