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Nitto screwdriver bits are high-performance tools manufactured by Nitto Seiko in Japan, designed for precision fastening in both manual and automatic applications. These bits are engineered to meet JIS (Japanese Industrial Standard) specifications, ensuring a superior fit with Japanese-made screws compared to standard Phillips bits.
Precision Fit: Designed based on JIS B4633 standards, which provides a tighter fit in cross-recess screw heads to minimize "cam-out" (the bit slipping out of the screw) and prevent damage to the screw head.
High Durability: Constructed with specialized materials and heat treatment processes that offer high hardness (often exceeding HRC60) and high torque resistance.
Optimal Torque Transmission: The drive point design minimizes stress at the tip, reducing the risk of chipping or breakage during high-speed or high-torque operations.
Universal Compatibility: Features a standard 6.35mm (1/4") hex shank, making them compatible with most electric, pneumatic, and hand-held screwdrivers.
PH1 (#1): Best suited for smaller screws found in electronics, small appliances, and precision machinery.
PH2 (#2): The industry standard for most construction, furniture assembly, and automotive fasteners.
PH3 (#3): Designed for larger, heavy-duty screws used in structural framing, heavy machinery, and thick metal materials.

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