3M™ Scotchlok™ Copper Compression Lugs, 30000 and 31000 Series
4 of 7
Two Hole, Long-Barrel Lug Dimensions and Selection Guide [Dimensions in Inches and (Millimeters)]
3M™
Scotchlok™
Lug
Number
Conductor
Size AWG
or kcmil
(MCM)
Stud
Size
Color
Code
I.D., +/-
.010”
O.D.,
+/-
.010”
L,
Length,
+/- .100”
B,
Barrel
Length,
+/-
.100”
P, Pad
Length
, +/-
.060”
W,
Pad
Width
, +/-
.060”
C, Center of
Hole-to-End
of Pad, +/-
.030”
C1, Hole-
to-Hole,
Center –to-
Center, +/-
.015”
Agency
Approvals
31145 4/0 AWG
1/2
(12)
Purple
.548
(13,9)
.687
(17,4)
5.16
(131,1)
1.56
(39,6)
3.00
(76,2)
1.00
(25,4)
.63 (16,0) 1.75 (44,5) UL, CSA
31149 250 kcmil
1/2
(12)
Yellow
.595
(15,1)
.750
(19,1)
5.31
(134,9)
1.56
(39,6)
3.00
(76,2)
1.13
(28,7)
.63 (16,0) 1.75 (44,5) UL, CSA
31153 300 kcmil
1/2
(12)
White
.650
(16,5)
.813
(20,7)
5.75
(146,1)
1.94
(49,2)
3.00
(76,2)
1.22
(31,0)
.63 (16,0) 1.75 (44,5) UL, CSA
31156 350 kcmil
1/2
(12)
Red
.700
(17,8)
.875
(22,2)
5.75
(146,1)
1.94
(49,2)
3.00
(76,2)
1.31
(33,3)
.63 (16,0) 1.75 (44,5) UL, CSA
31160 400 kcmil
1/2
(12)
Blue
.762
(19,4)
.950
(24,1)
6.00
(152,4)
2.12
(53,8)
3.00
(76,2)
1.41
(35,8)
.63 (16,0) 1.75 (44,5) UL
31166 500 kcmil
1/2
(12)
Brown
.836
(21,2)
1.059
(26,9)
6.16
(156,5)
2.19
(55,6)
3.00
(76,2)
1.53
(38,9)
.63 (16,0) 1.75 (44,5) UL, CSA
31168 600 kcmil
1/2
(12)
Green
.923
(23,4)
1.188
(30,2)
6.72
(170,6)
2.62
(66,5)
3.00
(76,2)
1.69
(42,9)
.63 (16,0) 1.75 (44,5) UL
31172 750 kcmil
1/2
(12)
Black
1.031
(26,2)
1.299
(33,0)
7.00
(177,8)
2.81
(71,4)
3.00
(76,2)
1.72
(43,7)
.63 (16,0) 1.75 (44,5) UL, CSA
31178 1000 kcmil
1/2
(12)
White
1.173
(29,8)
1.500
(38,1)
7.28
(184,9)
2.94
(74,6)
3.00
(76,2)
1.72
(43,7)
.63 (16,0) 1.75 (44,5) UL, CSA
Typical
Properties
Not for specifications. Values are typical, not to be considered minimum or maximum.
Properties measured at room temperature 73°F (23°C) unless otherwise stated.
3M™ Scotchlok™ Copper Compression Lugs, 30000 and 31000 Series, when crimped
with approved die sets, can be used on cables with an operating temperature of 221
o
F
(105
o
C) and an emergency overload rating of 284
o
F (140
o
C). The lugs pass the
requirements of UL486A (Underwriters Laboratories standard for safety) and are CSA
Certified (as indicated in the above tables). The current rating of these lugs meets or
exceeds the current rating of the conductor size for which it is intended.
