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Used as an alternative fastening method to using nails and through bolts when attaching multi-ply LVL, dimensional beams and girder trusses Requires no predrilling Flat head sits flush, allowing for easy application of drywall or trim Approved for single-sided installation TORX(R) ttap(R) drive system maximizes bit fit and reduces the potential for strippingYou may also like 5/8inches-11 x 3 FT Grade 18-8 Stainless Steel Threaded Rod, Bundle of 3 - by, LLC$$Tools & Hardware Other.