Size = 10-32 x .750" STI SHCS T30 Hexalobular Bit (Included) Head Diameter = .350" Head Length = .251" PreCoil Socket Head Cap Screws are purpose-built for STI (Screw Thread Insert) tapped holes — the oversized internal threads you cut before installing a Heli-Coil.
Instead of running standard threads, only to later blow-out to STI sized
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These things save time and money. We can just use the holes in the part without needing extra clamps