MARYLAND METRICS
THREAD DATA CHARTS

METRIC THREAD -- ELECTRICAL THREAD -- Pg

80 deg

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Pg thread usage will eventually be phased out in continental Europe. A new metric thread standard (EN 50262) will be phased in as mandatory beginning on March 1, 2001 replacing the Pg thread. Metric electrical threads are already in use in the UK where they have replaced the (now obsolete for electrical use) BSP threads.

PG
MARYLAND METRICS -- THREAD DATA CHART:
METRIC Pg ELECTRICAL THREAD DIN 40430 (Stahlpanzerrohr-Gewinde)
 
Pg
Nominal
Size
Callout
Thread
Form
Type
Major
Diameter
mm
d=D
Pitch
mm
p
Threads
per
inch
tpi
Pitch
Diameter
mm
d2=D2
Minor
Diameter
Male Thd.
d1
Thread
Height
H1
Tap
Drill
Diameter
mm
Radius

mm
Pg7 Pg 12.5 1.27 20 11.89 11.28 0.61 11.4 0.14
Pg9 Pg 15.2 1.411 18 14.53 13.86 0.67 14 0.15
Pg11 Pg 18.6 1.411 18 17.93 17.26 0.67 17.25 0.15
Pg13.5 Pg 20.4 1.411 18 19.73 19.06 0.67 19 0.15
Pg16 Pg 22.5 1.411 18 21.83 21.16 0.67 21.25 0.15
Pg21 Pg 28.3 1.588 16 27.54 26.78 0.76 26.75 0.17
Pg29 Pg 37 1.588 16 36.24 35.48 0.76 35.5 0.17
Pg36 Pg 47 1.588 16 46.24 45.48 0.76 45.5 0.17
Pg42 Pg 54 1.588 16 53.24 52.48 0.76 52.5 0.17
Pg48 Pg 59.3 1.588 16 58.54 57.78 0.76 57.75 0.17
For clearance drill diameter: (Pg 7 thru Pg 13.5 add 0.1 mm to major diameter)
For clearance drill diameter: (Pg 16 thru Pg 48 add 0.25 mm to major diameter)
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