Page 8 - Technical Information Section

NEMA STANDARD PAD CONFIGURATIONS

These figures show the arrangements of 9/16” bolt holes which are
standardized for electrical power connectors under NEMA Standard CC1.

1" Min. 3" 5/8" 11/8" 4" 11/8"
5/8" 5/8" 13/4" 11/8" 13/4"

13/4" 4" 13/4"
3"

5/8"

Penn-Union Penn-Union 11/8"
Standard Suffix Standard Suffix
Penn-Union
–D –F Standard Suffix

5" –E
11/8"
6"

13/4" 4"

3/4" 13/4" 13/4" 3/4" 11/8" 11/4" 13/4" 13/4" 11/4"

Penn-Union Penn-Union
Standard Suffix Standard Suffix

–G –H

STUD SIZE CHART (INCHES)

Standard Stud Size #2 #4 #5 #6 #8 #10 1/4” 5/16” 3/8” 7/16”
Stud Size Decimal .375” .438”
Equivalent .086” .112” .127” .138” .164” .190” .250” .312” .392” .456”
Terminal Hole Diameter .406”
.090” .118” .130” .147” .173” .204” .270” .343”

Standard Stud Size 1/2” 5/8” 3/4” 7/8” 1”
Stud Size Decimal .875” 1.00”
Equivalent .500” .625” .750” .906”
Terminal Hole Diameter 1.031”
.531” .656” .810”
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