Torx® Tamper-Resistant Masonry Screws
UltraCon® Masonry Screws are the optimal fastening solution for use in
concrete, brick, or hollow block. This unique screw combines the
security feature of a Torx® tamperresistant drive with the superior
quality and easy installation of an UltraCon® masonry screw. The special
Hi-Lo thread literally taps threads into masonry materials. The high,
sharp thread with its notched cutting edge cuts deeply and easily. The
alternating low thread provides stability for fast, accurate driving.
The screws are coated with Stalgard® finish to provide superior
corrosion resistance. Fasteners coated with Stalgard® finish typically
show no red rust or other base material corrosion on significant
surfaces even after 800 hours of 5% neutral salt spray exposure (ASTM
UltraCon® and Torx® are
registered trademarks of Accument Intellectual Properties, LLC.
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UltraCon products and pricing
A = Attachment
B = UltraCon®embedment
(min. of 1", max. of 1-3/4")
A+B = UltraCon® length
B+C = Hole depth (must be at least 1/4"
Fastener Length and Diameter
The length of the UltraCon®
fastener to be used is determined by combining the thickness of the
attachment (A) with the desired depth of embedment in the masonry
material (B). 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.
Application strength requirements and safety factors should be
considered when determining the depth of embedment and fastener
Please reference the
Performance Data chart on this page.
The correct hole depth (B & C)
can normally be obtained by drilling the full length of this bit. In all
cases, the hole must be at least 1/4" deeper than the depth of the
fastener embedment. Normal safety precautions should be observed when
drilling the holes to avoid electrical installations, other utilities
and reinforcement bars.
The diameter of the drilled
hole is also important to the
performance of the UltraCon® masonry fastener. To provide the
proper hole diameters, Elco® carbide-tipped drill bits are
manufactured to closer standards than those called for in the
American National Standard. Using Elco® carbide-tipped bits will help
assure consistent performance and maximum pullout strength.
Elco® is a registered
trademark of Accument Intellectual Properties LLC.