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For over 20 years, GRK has produced contractor-grade fasteners for
professional use, incorporating innovative design features to make screws
that are faster and easier to drive, hold better in wood, plastic and
composite materials, and reduce the risk of splitting.
GRK screws all have  Torx
heads (and are supplied with a matching Torx bit) to reduce the potential
for cam-out and slippage in the drive. The hardened steel screws have
a rust-resistant Climatek™ coating that won’t react with treated
lumber; the 305 stainless-steel versions have a Pheinox™ coating
for additional long-term corrosion resistance in marine environments,
below-ground use or other harsh conditions.
Made of hardened steel for high torque and shear strength, these are
GRK's toughest screws, highly recommended for load-bearing applications.
Self-tapping tips eliminate need for pre-drilling; sawtooth-like ridges
on threads near the tip reduce friction and driving effort. Secondary
threads enlarge the upper portion of the hole slightly so the Torx-drive
screw seats snugly with less torque. The broad, washer-style head spreads
the bearing surface over a large contact area, improving hold. A small
bevelled shoulder under the head helps the screw seat squarely in hinges
and other hardware.
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A. RSS™ Screws, Climatek™
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Size
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Quantity
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Included Torx Bit
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1+
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5+
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93Z03.12
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1/4" x 1-1/2"
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50
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T-25
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$11.80
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$10.10
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93Z03.16
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1/4" x 2"
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50
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T-25
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$14.80
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$12.60
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93Z03.20
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1/4" x 2-1/2"
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50
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T-25
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$15.90
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$13.50
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93Z03.25
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5/16" x 3-1/8"
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100
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T-30
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$50.70
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$43.10
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93Z03.28
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5/16" x 3-1/2"
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100
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T-30
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$54.60
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$46.40
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93Z03.32
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5/16" x 4"
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100
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T-30
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$54.90
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$46.70
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B. RSS™ Screws, Stainless Steel/Pheinox™
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Size
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Quantity
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Included Torx Bit
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1+
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5+
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93Z03.62
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1/4" x 1-1/2"
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50
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T-25
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$22.25
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$18.90
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93Z03.82
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5/16" x 4"
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100
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T-30
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$105.00
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$89.00
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