Technical Specifications
Before installing double expansion anchors, certain technical specifications need to be considered to ensure correct placement and setting. A double expansion anchor bolt ranges in size from 1/4" to 3/4" diameter. These concrete fasteners are made from Zamac 5 alloy and are rust-resistant. The unique feature of double expansion anchors are that they eliminate high stress points during expansion as concrete stress is distributed the full length of the fastener. They work well in concrete, brick, stone, and block.
| 1/4” – 3/4” bolt diameter |
| Zamac 5 alloy Available In: Zamac |
ULTIMATE HOLDING VAULES – CONCRETE*
| 1/4-20 |
1-3/8 |
1/2 |
2,820 |
DE14 |
100 |
| 5/16-18 |
1-3/16 |
5/8 |
2,990 |
DE516 |
50 |
| 3/8-16 |
2-1/16 |
3/4 |
5,995 |
DE38 |
50 |
| 1/2-13 |
2-1/2 |
7/8 |
9,140 |
DE12 |
25 |
| 5/8-11 |
3 |
1 |
12,050 |
DE58 |
25 |
| 3/4-10 |
4 |
1-1/4 |
14,500 |
DE34 |
10 |
*Values shown are average ultimate values and are offered only as a guide and are not guaranteed. A safety factor of 4:1 or 25% is generally
accepted as a safe working load. Reference should be made to applicable codes for the specific working ratio. *Tested by ATEC in accordance
with ASTM E488-90 and ICBO Minimum embedment for satisfactory anchor performance is 4-1/2 bolt diameters. Deeper embedment will
yield higher tension and shear capacity.