Página 247 - BURNDY

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Canada: 1-800-387-6487
www.burndy.com
US: 1-800-346-4175
Blue highlighted items are industry standard and most frequently ordered.
Hardware
BURNDY
®
D-2
DURIUM™ BOLT
SILICON BRONZE
BURNDY
®
introduced silicon-bronze bolts,
nuts, and other hardware items on outdoor
connector applications in 1927. Today the
DURIUM™ trademark is a standard for
this use.
DURIUM™ bolts combine high strength with
corrosion resistance.
Bolts up to 2 inches
long are fully threaded; longer bolts are
threaded for two inches.
Heads have
HARDWARE DATA
RECOMMENDED
TIGHTENING TORQUE
The hardware used in connectors must be
compatible with the connector material, have
high mechanical strength and be corrosion
resistant and correspond to NEMA
recommendations.
Copper alloy connectors have hardware
made of DURIUM™, which is BURNDY's
trade name for silicon bronze alloy ASTMB99
type B. This material was first introduced by
BURNDY
®
in 1927 for use in outdoor
construction, and today, is the standard
throughout the industry.
Aluminum connectors generally have
aluminum alloy hardware. The bolts are
2024T4 and anodized to resist corrosion. The
nuts are 6061T6, which is resistant to corro-
sion and does not require anodizing. Both
nuts and bolts are lubricated to eliminate
DURIUM™ and Steel Hardware Aluminum Hardware
Bolt
Size
Recommended
Torque
(Inch Pounds)
Bolt
Size
Recommended
Torque
(Inch Pounds)
1/4 - 20
80
1/2 - 13
5/8 - 11
3/4 - 10
300
5/16 - 18
180
480
3/8 - 16
240
650
1/2 - 13
480
5/8 - 11
660
3/4 - 10
1,050
galling and to provide consistent clamping
forces.
To reduce or greatly exceed the recommend-
ed torque can adversely affect the perform-
ance of the connector.
Thread
B
Thread
B
Thread
B
Catalog Number
Size
Length
Catalog Number
Size
Length
Catalog Number
Size
Length
25x50 HEB BOX
1/4-20
1/2
38x125 HEB BOX
3/8-16
1-1/4
50x300 HEB BOX
1/2-13
3
25x62 HEB BOX
1/4-20
5/8
38x150 HEB BOX
3/8-16
1-1/2
50x325 HEB BOX
1/2-13
3-1/4
25x75 HEB BOX
1/4-20
3/4
38x175 HEB BOX
3/8-16
1-3/4
50x350 HEB BOX
1/2-13
3-1/2
25x100 HEB BOX
1/4-20
1
38x200 HEB BOX
3/8-16
2
50x375 HEB BOX
1/2-13
3-3/4
25x125 HEB BOX
1/4-20
1-1/4
38x225 HEB BOX
3/8-16
2-1/4
50x400 HEB BOX
1/2-13
4
25x150 HEB BOX
1/4-20
1-1/2
38x250 HEB BOX
3/8-16
2-1/2
50x450 HEB BOX
1/2-13
4-1/2
25x200 HEB BOX
1/4-20
2
38x275 HEB BOX
3/8-16
2-3/4
50x500 HEB BOX
1/2-13
5
25x250 HEB BOX
1/4-20
2-1/2
38x300 HEB BOX
3/8-16
3
50x550 HEB BOX
1/2-13
5-1/2
25x300 HEB BOX
1/4-20
3
38x325 HEB BOX
3/8-16
3-1/4
50x600 HEB BOX
1/2-13
6
31x50 HEB BOX
5/16-18
1/2
38x350 HEB BOX
3/8-16
3-1/2
62x100 HEB BOX
5/8-11
1
31x62 HEB BOX
5/16-18
5/8
38x400 HEB BOX
3/8-16
4
62x125 HEB BOX
5/8-11
1-1/4
31x75 HEB BOX
5/16-18
3/4
38x450 HEB BOX
3/8-16
4-1/2
62x150 HEB BOX
5/8-11
1-1/2
31x100 HEB BOX
5/16-18
1
38x500 HEB BOX
3/8-16
5
62x175 HEB BOX
5/8-11
1-3/4
31x125 HEB BOX
5/16-18
1-1/4
44x150 HEB BOX
7/16-14
1-1/2
62x200 HEB BOX
5/8-11
2
31x150 HEB BOX
5/16-18
1-1/2
44x200 HEB BOX
7/16-14
2
62x225 HEB BOX
5/8-11
2-1/4
31x175 HEB BOX
5/16-18
1-3/4
50x75 HEB BOX
1/2-13
3/4
62x250 HEB BOX
5/8-11
2-1/2
31x200 HEB BOX
5/16-18
2
50x100 HEB BOX
1/2-13
1
62x275 HEB BOX
5/8-11
2-3/4
31x250 HEB BOX
5/16-18
2-1/2
50x125 HEB BOX
1/2-13
1-1/4
62x300 HEB BOX
5/8-11
3
31x300 HEB BOX
5/16-18
3
50x150 HEB BOX
1/2-13
1-1/2
62x325 HEB BOX
5/8-11
3-1/4
38x50 HEB BOX
3/8-16
1/2
50x175 HEB BOX
1/2-13
1-3/4
62x350 HEB BOX
5/8-11
3-1/2
38x62 HEB BOX
3/8-16
5/8
50x200 HEB BOX
1/2-13
2
62x400 HEB BOX
5/8-11
4
38x75 HEB BOX
3/8-16
3/4
50x225 HEB BOX
1/2-13
2-1/4
62x450 HEB BOX
5/8-11
4-1/2
38x88 HEB BOX
3/8-16
7/8
50x250 HEB BOX
1/2-13
2-1/2
62x500 HEB BOX
5/8-11
5
38x100 HEB BOX
3/8-16
1
50x275 HEB BOX
1/2-13
2-3/4
62x600 HEB BOX
5/8-11
6
American Standard dimension, and the
threads are per American National Coarse
Series, Class #2 fit. The silicon bronze is per
ASTM B99.