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
Size
Anchor Length
Drill Size
* Ultimate
Pullout Lbs
* Ultimate Shear
Lbs
Box Quantity
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
Box Quantity
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.
For further information, sizes, pricing, and to order SINGLE & DOUBLE MACHINE BOLT SHIELDS
in the above categories and more, click the links below

SINGLE MACHINE BOLT SHIELDS

DOUBLE MACHINE BOLT SHIELDS