BA Machine Screws with Nuts, Round Head, Slotted. Brass 410 Pieces AB4N. Machine Screws with Nuts, Round Head, Slotted – BA. 410 Pieces. Round Head and slotted. Brass Machine Screws. Machine Screws: 6BA x 1/2″, 6BA x 3/4″, 6BA x 1″, 4BA x 1/2″, 4BA x 3/4″, 4BA x 1″, 2BA x 1/2″, 2BA x 3/4″, 2BA x 1″, 2BA x 1 1/2″.
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