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What sizes do concrete screws come in?
Home centers and hardware stores stock concrete screws in two diameters, 3/16 in. and 1/4 in. The 3/16-in. diameter screws are plenty strong for most home tasks like installing furring strips, screwing down walls to concrete floors, and attaching hardware to block or brick.
How deep should Tapcons be in concrete?
The depth of the hole that a Tapcon® concrete screw will be installed into is critical. The hole must be drilled 1/4” deeper than the screw will penetrate. This extra space at the bottom of the hole allows for an area for the dust created during the tapping process to fall without impacting installation.
What are the smallest Tapcon screws?
Concrete Screw Information
| Screw diameter | Masonry bit size * | Minimum embedment |
|---|---|---|
| 3/16″ | 5/32″ | 1-1/8″ |
| 1-1/2″ ** | ||
| 1/4″ | 3/16″ | 1″ |
| 1-1/4″ |
Do I need to drill a pilot hole for concrete screws?
It’s essential to make the pilot hole deeper than the length of your concrete screws to ensure that when the concrete screws are cutting threads there is room for any dust coming from the concrete or brick.
How much weight can Tapcon screws hold?
1,360 lbs. *A safety factor of 4:1 or 25% of ultimate pullout/shear value is generally accepted as a safe working load.
What size drill bit do I need for 1/4 inch Tapcon?
The Tapcon drill bit that is used depends on the diameter of the Tapcon screw being installed. The 3/16” Tapcon requires the use of 5/32” diameter bit, and the 1/4” Tapcon requires a 3/16” diameter bit.
How do I choose concrete anchors?
The best holding values are achieved when the concrete is hard and the embedment into the concrete is deep. The larger the diameter- the higher holding values the anchor will have. For example, a 3/4″ diameter anchor has a minimum embedment of 3-1/4″ and a 1/4″ anchor has a minimum embedment of 1″.
What are the technical specifications for Tapcon screws?
There are numerous technical specifications that must be considered when using Tapcon® screws. Determinations must be made on the diameter of the screw – standard or large diameter, length of the screw – ranging from 1-1/4″ to 6″, head style – hex slotted or flat phillips,…
How big of a hole do you need for a Tapcon?
A 3/16” Tapcon requires a 5/32” hole and a 1/4” Tapcon requires a 3/16” hole. Bit Diameter – the bit must meet ANSI standards, have a carbide tip and be used in a hammer drill that is set in the hammer and rotation mode while drilling the hole.
What kind of bit is used for Tapcon?
The 5/32″ bit is used for the 3/16″ Tapcon® concrete screw and the 3/16″ bit is used for the 1/4″ Tapcon. These bits can be used for either the standard blue Tapcon or the stainless steel Tapcons.
How big is a stainless steel Tapcon washer?
The stainless steel Tapcon comes in a 3/16” diameter in the flat countersunk head and in a 1/4” diameter with the hex washer head and the flat Phillips countersunk. Diameter – CAD drawings can be found on the manufacturer’s website: Tapcon Drawing.