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Furniture Maker's Simple Trick Makes Screws Hold Infinitely Tighter
Torx: The Torx head, often referred to as a star head ... in further and hold/tighter and harder. Slotted Hex: The slotted hex screw is a hybrid of a screw and bold, making it useful for heavy ...
Why Is It Called a “Phillips Head” Screwdriver?
In 1933, Phillips obtained the rights to a socket screw invented by John Thompson that had a cross-slotted rather than slit ...