Phillips panhead machine screw, 4-40, zinc. Designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. Has a general purpose bearing area and can be substituted in most applications for round, truss, or binding heads. Phillips drive is the most common drive used and is designed to "camout" when the screw reaches optimum tightness, thus preventing damage to the screw head.
Phillips panhead machine screw, 8-32, zinc. Phillips panhead machine screw, 4-40, zinc. Designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. Has a general purpose bearing area and can be substituted in most applications for round, truss, or binding heads. Phillips drive is the most common drive used and is designed to "camout" when the screw reaches optimum tightness, thus preventing damage to the screw head.
Phillips panhead machine screw, 10-32, zinc. Phillips panhead machine screw, 4-40, zinc. Designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. Has a general purpose bearing area and can be substituted in most applications for round, truss, or binding heads. Phillips drive is the most common drive used and is designed to "camout" when the screw reaches optimum tightness, thus preventing damage to the screw head.
Self tapping Phillips panhead machine screw #8, zinc type AB. Type AB screws tap their own mating internal thread. They require a preformed hole for installation into metallic materials but not necessary for wood or plastic materials. Combines locating point of Type A with thread size and pitch of Type B. Normal limitations of Type B apply. Has a general purpose bearing area and can be substituted in most applications for round, truss, or binding heads. Provides good control in driving and is the most recommended drive.
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