B1/2-13 x 1 3/8 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR FPU188 The thread rolling design provides

The thread rolling design provides superior holding power and resistance to vibration loosening

and a truss head

7-12 x 3 Phillips Flat Head w/Nibs Deep Thread Wood Screw Type 17 Point 2/3 Thrd Zinc & Bake are designed for use in wood applications

It is grade 8

Its 5/8-inch internal diameter fits snugly around bolts of the same size

B1/2-13 x 1 3/8 MS90728, Alloy Steel B1821 Coarse Cap Screw Per ASTM A354BD Zinc Yellow DFAR FPU188 The thread rolling design providesB1 2 13 x 1 3 8 MS90728 is an Alloy Steel B1821 Coarse Cap Screw that meets the specifications of ASTM A354BD. It has a diameter of 1 2 inch, a length of 1 3 8 inches, and a thread pitch of 13 threads per inch. The screw is zinc plated yellow and meets the requirements of the Defense Federal Acquisition Regulation Supplement (DFARS). It is commonly used in industrial and construction applications where high strength and corrosion resistance are