5/16-18 x 1 Weld Screw with Nibs Under The Head Fully Threaded Plain NK188 The screw is 1 1/4

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5/16-18 x 1 Weld Screw with Nibs Under The Head Fully Threaded Plain NK188 The screw is 1 1/4**5 16 18 x 1 Weld Screw with Nibs Under the Head Fully Threaded Plain** This weld screw features a 5 16 inch diameter and an 18 threads per inch (TPI) pitch. It measures 1 inch in length and is fully threaded for maximum holding power. The screw has a plain finish and is designed for welding applications. The nibs under the head provide additional grip and prevent the screw from turning when welded. This screw is commonly used in metal fabrication,