TAMPER-PRUF SCREWS 21630 5/16"-18 x 1 in Hex Button Tamper Resistant Screw,
$5.45
Tamper Resistant Screw, Head Type Button, Material Case Hardened Steel, Finish Black Oxide, Thread Size 5/16-18, Head Height 0.152 to 0.166 in, System of Measurement Inch, Package Quantity 10