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CreteFlex Stainless Steel Concrete Screws

Tuesday, June 11, 2013
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Purchase Stainless Steel Tapcons

Uses

These stainless steel masonry screws can be used in applications where stainless steel is required to fasten an item or fixture to masonry base materials, such as an electrical junction box, plywood, light fixture or a 2x4.

Head Styles

There are two different head styles are available: the slotted hex washer head for use in applications where the head of the screws sits on top of the surface of the material being fastened and the Phillips flat countersunk for use in applications where the head sits flush with the surface of the item being fastened.

Diameter

CreteFlex screws are manufactured in a one-quarter inch (1/4”) diameter, which is designated by the first number in the description.

Length

CreteFlex screws are available in lengths from 1-1/4” to 6”, which is designated by the second number in the description. The hex headed screw is measured from underneath the head; the flat countersunk is measured as an overall length including the head.

Diameter of Hole

A 7/32” diameter hole must be drilled into the base material using a hammer drill and a carbide tipped bit that meets ANSI standards. This will ensure proper tolerance for each diameter of both the hex and flat headed stainless steel CreteFlex screw.

Depth of Hole

The hole must be drilled into the masonry material a minimum of 1/4” deeper than the screw will penetrate the masonry. It is important that the hole allows the screw to be installed at minimum embedment depth.

Embedment

  • Minimum Embedment – the CreteFlex screw must be installed in the masonry a minimum of
  • Maximum Embedment – the CreteFlex screw must be installed 1-3/4” for all lengths

Thickness of Material Being Fastened

Each different length of Philips flat head or hex head screw is designed to fasten materials of different thickness.  The maximum thickness of material to be fastened can be determined by subtracting the minimum embedment depth of 1” from the length of the screw.  For example, subtract 1” from the overall length of a 3-3/4” long CreteFlex screw to determine that 2-3/4” would equal the maximum thickness of the material that can be fastened with this length of the screw.

Performance Data

2,732 PSI ConcreteHollow Block (2,070 PSI)
Embedment Pull-Out (Lbs.) Shear (Lbs.) Pull-Out (Lbs.) Shear (Lbs.)
1” 762 2591 780 1324

Anchor Selection

Each box of CreteFlex screws is packaged 100 pieces per box, with one proper diameter and length bit in each box.

Installing CreteFlex Screws

  1. Drill a hole in the base material using a hammer drill and a 7/32” carbide tipped bit that meets ANSI standards.
  2. Make sure that the hole is drilled a minimum of 1/4” deeper than the screw will penetrate and will allow the screw to reach minimum embedment.
  3. Using compressed air, wire brush or vacuum, clean the hole of all dust.
  4. Insert the pointed end of the screw through the fixture and into the hole in the base material.
  5. Using a 3# Phillips bit tip for the flat head or a 5/16” nut driver for the hex head, screw into the hole by tapping threads until the head of the screw is tight against the surface of the material being fastened.

Purchase Stainless Steel Tapcons



 

Always use personal protective equipmentAs with any anchoring project, it is important to keep safety in mind and follow instructions carefully. Always remember to wear safety goggles, handle all tools with extra care and follow all technical specifications. This article is meant to serve only as a basic explanation of concrete fasteners. Always refer to manufacturer's instructions or consult a contracting expert during any anchoring project.

Article Written By:
Mike Pistorino, Vice-President Operations

 

 

 

 


Concrete Fastening Systems, Inc. has over 40 years of experience selling concrete fasteners. We can ship out one box or a whole pallet of concrete anchors. Our products are of the highest quality... "your satisfaction is guaranteed". We ship all orders the same day the order is received.

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