Technical Specifications - Leadwood Screw Anchors
There are numerous technical specifications that must be considered when using Leadwood Screw Anchors.
Considerations include: Leadwood Screw Anchor diameter, Leadwood Screw Anchor length, sheet metal screw diameter and required hole size. The longer length Leadwood Screw Anchors are ideal when working with soft masonry. The size of the Leadwood Screw Anchor refers to the diameter of the sheet metal screw used to expand this anchor. Once all of these factors have been determined, you can find the expected holding values in the technical information below.
Leadwood Screw Anchor Screw Length:
To determine the length of screw required for your Leadwood Screw Anchor, simply add the thickness of the fixture to be fastened to the length of the Leadwood Screw Anchor.
Leadwood Screw Anchor Spacing:
The forces on a Leadwood Screw Anchor are transferred to the material in which it is installed. If the anchors are installed too close together, it can cause an interaction of the forces, thus reducing the holding power of the anchor. As a rule of thumb, the expansion anchor industry has established a minimum standard of ten (10) anchor diameters for spacing between anchors and five (5) anchor diameters from an unsupported edge. When vibration or sudden impact are part of the load conditions, the spacing should be increased.
Leadwood Screw Anchor Ultimate Holding Values** - CONCRETE
| 6-8 |
3/4 |
1/4 |
286 |
LWSA634 |
100 |
| 6-8 |
1 |
1/4 |
352 |
LWSA6100 |
100 |
| 6-8 |
1-1/2 |
1/4 |
440 |
LWSA6112 |
100 |
| 10-14 |
3/4 |
5/16 |
792 |
LWSA1034 |
100 |
| 10-14 |
1 |
5/16 |
792 |
LWSA10110 |
100 |
| 10-14 |
1-1/2 |
5/16 |
990 |
LWSA10112 |
100 |
| 16-18 |
1 |
3/8 |
1254 |
LWSA16100 |
100 |
| 16-18 |
1-1/2 |
3/8 |
1254 |
LWSA16112 |
100 |
** 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. All values are based on close-tolerance holes drilled with carbide tipped drill bits. Designated holding power depends on the quality of the masonry material, depth of embedment, and proper hole size.