Tapcon® Stainless Steel Screws Technical Information
Pullout (lbs.) in Concrete (3000 psi, cured 40 days)
| Anchor |
Depth of Embedment in Solid Material (Inches) |
| Diameter |
1" |
1-1/4" |
1-1/2" |
1-3/4" |
| 3/16" |
964 |
1080 |
1360 |
1595 |
| 1/4" |
1381 |
1616 |
2041 |
2332 |
Pullout in Hollow Block
| Anchor |
Depth of Embedment in Solid Material (Inches) |
| Diameter |
1-1/4" |
| 3/16" |
540 |
| 1/4" |
754 |
Shear
Anchor
Diameter |
Anchor
Embedment |
3145 PSI Hard
Rock Concrete |
Lightweight
Hollow block |
| 3/16" |
1-1/4" |
1460 |
1096 |
| 1/4" |
1-1/4" |
1622 |
1218 |
The figures above indicate average ultimate tension and shear failure values. A safety factor of 4:1 or 25% of ultimate value is generally accepted as a safe working load. Reference should always be made to applicable codes. All values are based on close tolerance holes drilled with Buildex Tapcon® carbide drill bits. Performance of a Tapcon® anchor may vary in extremely hard concrete aggregates. Holding values depend on the quality of the base material. These figures are offered only as a guide and are not guaranteed in any way by Illinois Tool Works, Inc.