SINGLE & DOUBLE MACHINE BOLT
EXPANSION SHIELDS
The Single Expansion Shield consists of a two-piece expansion shield held together by a steel
band or wire, or interlocked by ears and lugs, and an expander nut.  The outer surface of the
shield is designed with ribs or corrugations to resist turning.  The nut is either conical or eliptical
in shape so as to fit within the shield body.  The Double Expansion Shield consists of a two-piece
tubular shield, a hollow wedge-shaped cone, and a wedge-shaped nut, which are brought
together into a single anchor unit.  The shield is connected by a pair of spring bands.  At one end
is the nut, and at the other end is the cone, each designed so as not to turn during expansion.
SINGLE MACHINE BOLT EXPANSION SHIELD
                   After you see what your looking for, make a list, then call, fax, or email us for price and
availability.  You'll find a staff that is eager to assist you.  
CALL  1-800-877-2907 or FAX  1-781-821-2845
SIZE
ANCHOR
LENGTH
DRILL SIZE
* ULTIMATE
PULLOUT LBS
* ULTIMATE
SHEAR LBS
SIZE
1/4
1-5/16
1/2
1,760
2,120
100
5/16
1-1/2
5/8
2,080
3,200
50
3/8
1-1/2
3/4
2,310
3,800
50
1/2
2"
7/8
3,600
8,100
50
5/8
2-5/8
1"
5,980
12,000
25
3/4
2-3/4
1-1/4
8,910
15,200
25
SIZE
ANCHOR
LENGTH
DRILL SIZE
* ULTIMATE
PULLOUT LBS
* ULTIMATE
SHEAR LBS
SIZE
1/4
1-3/8
1/2
1,850
2,650
100
5/16
1-5/8
5/8
2,000
3,570
50
3/8
2"
3/4
4,010
4,340
50
1/2
2-1/2
7/8
4,600
8,790
25
5/8
2-3/4
1"
5,950
13,000
25
3/4
4"
1-1/4
9,350
16,200
10
DOUBLE MACHINE BOLT EXPANSION SHIELD
* The pullout and shear values are average results obtained using 3,700 psi concrete.  A safe working
load should not exceed 25% of the stated values.
* The pullout and shear values are average results obtained using 3,700 psi concrete.  A safe working
load should not exceed 25% of the stated values.
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ANCHORS