COUNTERSUNK SELF TAPPING SCREWS. TORX TX20 T20 PIN DRIVE. TO DRIVE THE SCREWS YOU CAN ONLY USE T20 TX20 PIN TYPE TORX SECURITY BITS. CROSS HEAD PZ2 SOLID SECURITY TAMPER PROOF 6 POINT STAR 6 POINTED STAR SIX POINT STAR SIX POINTED STAR BIT PRECISION COUNTER SUNK COUNTER SINK COUNTERSINK FLAT TOP CROSS HEAD.
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