Designed for UNC (Unified National Coarse) threads with a nominal diameter of 1/4 inch and 24 threads per inch, this screwdriver bit is a staple in mechanical assembly and equipment maintenance. It features an ISO-standard Phillips #2 cross-recess profile, precisely matching the depth and angle of 1/4"-24 screw slots with a tolerance of ±0.05mm. This ensures accurate torque transmission, reducing slippage by 35% compared to standard Phillips bits and minimizing screw stripping or bit wear.

The unique tetrahedral pyramidal tip design penetrates deep into the screw recess, distributing force evenly across the material. This makes it particularly effective for high-strength materials like stainless steel and alloy steel. A built-in magnetic ring (≥2N holding force) at the bit's tail secures 1/4"-24 screws, preventing drops during overhead or confined-space operations. For electronic applications, select models feature an anti-static coating that dissipates static electricity in <0.1 seconds, safeguarding sensitive components from electrostatic damage.

Constructed from S2 alloy steel or chrome-molybdenum-vanadium steel, the bit undergoes quenching and tempering to achieve a hardness of HRC 58-62, ensuring exceptional wear resistance and impact toughness. The shank is laser-engraved with "1/4"-24 PH2" and color-coded (e.g., red for UNC threads) for quick identification. Widely used in automotive engine repair, industrial machinery assembly, and furniture hardware installation, this bit is a trusted tool for professionals and DIY enthusiasts alike.