Example (note that not
all 6 fields will always be used, such as in B8ES):
|
B |
CPR |
6 |
E |
S |
-11 |
|
Letter |
Thread
Diameter |
|
A |
18mm |
|
B |
14mm |
|
C |
10mm |
|
D |
12mm |
|
J |
12mm |
Second box from example (CPR):
|
Letter |
Construction |
|
C |
Hex size 5/8" |
|
K |
5/8" projected
tip (ISO) |
|
M |
Compact type |
|
P |
Projected insulator
type |
|
R |
Resistor type |
|
U |
Surface or semi-surface
discharge type |
|
Z |
Inductive resistor |
|
Heat
Range |
Fourth box from example (E):
|
Letter |
Thread
Reach |
|
E |
19mm (3/4") |
|
F |
Tapered seat |
|
H |
12.7mm (1/2") |
|
L |
11.2mm (7/16") |
|
No symbol: |
|
Fifth box from example (S):
|
Letter |
Firing
End Construction |
|
A |
Special design |
|
B |
Special design for
Honda CVCC |
|
C |
Low angle ground
electrode |
|
G |
Fine wire nickel
alloy center electrode |
|
GV |
Gold-palladium center
electrode
|
|
H |
Partial thread |
|
K |
2 ground electrodes
for Toyota / BMW |
|
L |
Half heat range |
|
LM |
Compact type for
lawn mower |
|
M |
2 ground electrodes
for Mazda rotary engine |
|
N |
Special side electrode |
|
P |
Premium platinum |
|
Q |
4 ground electrodes |
|
R |
Special ground electrode |
|
S |
Standard 2.6mmø
center electrode |
|
T |
3 ground electrode |
|
U |
Semi-surface discharge |
|
V |
Fine wire gold-palladium
center electrode |
|
VX |
High performance
platinum |
|
W |
Tungsten electrode |
|
X |
Booster gap |
|
Y |
V-grooved center
electrode |
|
Z |
Thick 2.9mmø center
electrode |
Sixth box from example (-11):
|
Number |
Gap |
|
-8 |
0.8mm (0.032") |
|
-9 |
0.9mm (0.036") |
|
-10 |
1.0mm (0.040") |
|
-11 |
1.1mm (0.044") |
|
-13 |
1.3mm (0.050") |
|
-14 |
1.4mm (0.055") |
|
-15 |
1.5mm (0.060") |
|
-20 |
2.1mm (0.080") |
|
|
 |
 |
Please write with any suggestions or comments
|