Purchase Tapcon® Concrete Screws
Technical Information:
The Tapcon® brand concrete screw cuts threads
in a predrilled hole in concrete, brick or block. The screw
has alternating raised and lowered threads with diamond cut
notches which provide exceptional holding power and stability.
The Tapcon® brand concrete screw is available in both
3/16" or 1/4" diameters with either a flat phillips
#3 countersunk or a 5/16" hex washer head. All screws
are plated using the Climaseal® coating which provides extended
life and additional lubricity for ease of installation. Tapcon®
screws are also available in 410 stainless steel finished
with Climashield. The stainless steel screws have shown
no red rust in salt spray test performed at a certified A2LA
laboratory per ASTM B117 specifications. The Large Diameter Tapcons are available in 3/8”, 1/2”, 5/8” and 3/4", and come in standard, Envirex Coated and Stainless Steel.
Tapcon® Concrete Screw – Approvals:
Standard (3/16” and 1/4") Blue Screws meet the following:
- Miami Dade #07-0315.03
- ICC-ES Evaluation Report ESR-1671
- Florida Building Code FL7556
Large Diameter Tapcons meet the following:
- Metro-Dade County #04-1025.08
- Florida Building Code
Tapcon® Concrete Screw -
Applications:
Light to medium-duty in concrete, brick and block.
Tapcon® Concrete Screw -
Installation:
- Drill a pilot hole in the base material using a hammer drill and properly sized carbide tipped masonry drill bit. The depth of the hole should be
at least 1/2" deeper than the recommended anchor embedment.
- Clear the hole of all debris.
- Place the object to be fastened over the hole and insert the point of the Tapcon® concrete screw into the hole. Drive the screw in using a nut driver or #3 bit tip.
Be careful not to over-torque the screw – this will cause the screw to spin in the hole, stripping the threads.
Tapcon® Concrete Screw -
Screw Length:
The length of the Tapcon® fastener to be used
is determined by combining the thickness of the material to
be attached with the desired depth of embedment in the base
material. It is recommended that a minimum of 1" and
a maximum of 1-3/4" embedment be used in determining
fastener length. The diameter of the fastener and the depth
of embedment affect pullout strengths. A carbide-tipped drill
bit is supplied with each box of Tapcon® fasteners. The
correct hole must be drilled for the screw to obtain holding
values. In all cases the hole must be at least 1/4" deeper
than the depth of the fastener embedment.
Tapcon® Concrete Screw – Screw Spacing:
The manufacturer's recommended edge distance and anchor spacing for Tapcon® Concrete Screws is determined from the ICC Evaluation Report ESR-1671.
Tapcon® Concrete Screw - Technical Data:
Standard Blue Tapcon® Screws
| Pull Out Values (lbs.) - Concrete |
| Anchor Diameter |
Embedment Depth |
Concrete Strength |
| 2000 psi |
4000 psi |
5000 psi |
| |
1" |
600 |
650 |
800 |
| 3/16" |
1-1/2" |
1090 |
1090 |
1220 |
| |
1-3/4" |
1450 |
1460 |
1730 |
| |
1" |
750 |
800 |
950 |
| 1/4" |
1-1/2" |
1380 |
1820 |
2170 |
| |
1-3/4" |
2020 |
2380 |
2770 |
| Shear Values (lbs.) - Concrete |
| Anchor Diameter |
Embedment Depth |
Concrete Strength |
| 2000 psi |
4000 psi |
5000 psi |
| |
1" |
720 |
720 |
860 |
| 3/16" |
1-1/2" |
860 |
860 |
860 |
| |
1-3/4" |
870 |
990 |
990 |
| |
1" |
900 |
1360 |
1440 |
| 1/4" |
1-1/2" |
1200 |
1380 |
1670 |
| |
1-3/4" |
1670 |
1670 |
1670 |
| Tension and Shear (lbs.) in CMU (1" embedment) |
| |
Tension (lbs) |
Shear (lbs) |
| Anchor Diameter |
Light Weight |
Medium Weight |
Light Weight |
Medium Weight |
| 3/16" |
220 |
340 |
400 |
730 |
| 1/4" |
250 |
500 |
620 |
1000 |
Stainless Steel Tapcon® Screws
| Pull Out Values (lbs.) - Concrete (3000 psi, cured 40 days) |
| Anchor Diameter |
Depth of Embedment in Solid Material (inches) |
| 1" |
1-1/4" |
1-1/2" |
1-3/4" |
| 3/16" |
964 |
1080 |
1360 |
1595 |
| 1/4" |
1381 |
1616 |
2041 |
2332 |
| Pull Out Values (lbs.) - Hollow Block |
| Anchor Diameter |
Depth of Embedment in Solid Materials (1-1/4") |
| 3/16" |
540 |
| 1/4" |
754 |
| Shear Values (lbs.) |
| Anchor Diameter |
Anchor Embedment |
Shear Strength |
Shear Strength |
| 3145 PSI Hard |
Lightweight |
| Rock Concrete |
Hollow Block |
| 3/16" |
1-1/4" |
1460 |
1096 |
| 1/4" |
1-1/4" |
1622 |
1218 |
Large Diameter Tapcons
Carbon & Stainless Steel
| |
|
2000 PSI |
3000 PSI |
4000 PSI |
| Diameter |
Embedment Depth |
Tension (lbs.) |
Shear (lbs.) |
Tension (lbs.) |
Shear (lbs.) |
Tension (lbs.) |
Shear (lbs.) |
| 3/8" |
1-1/2" |
1336 |
2108 |
1652 |
2764 |
1968 |
3416 |
| |
2" |
1492 |
3036 |
2024 |
3228 |
2552 |
3420 |
| |
2-1/2" |
3732 |
3312 |
3748 |
3364 |
3760 |
3424 |
| |
3-1/2" |
5396 |
3312 |
6624 |
3368 |
7852 |
3428 |
| 1/2" |
2" |
3580 |
5644 |
3908 |
6512 |
4236 |
7380 |
| |
3-1/2" |
7252 |
6436 |
8044 |
7288 |
8836 |
8140 |
| |
4-1/2" |
10176 |
7384 |
10332 |
7968 |
10488 |
8552 |
| 5/8" |
2-3/4" |
5276 |
8656 |
6560 |
11064 |
7844 |
13476 |
| |
3-1/2" |
7972 |
10224 |
9848 |
12144 |
11724 |
14060 |
| |
4-1/2" |
11568 |
12316 |
13432 |
13580 |
16892 |
14840 |
| 3/4" |
3-1/4" |
6876 |
7140 |
9756 |
10728 |
12636 |
14316 |
| |
4-1/2" |
10304 |
13120 |
14424 |
16868 |
18540 |
20612 |
| |
5-1/2" |
13048 |
17908 |
18156 |
21718 |
23268 |
25652 |
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 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.