Screwdriver Bit Set Yato YT-0415 10 pcs 12-spline 9.5 mm

The Yato YT-0415 10-piece screwdriver bit set contains twelve-spline flange bits with a 9.5 mm tip dimension and a 1/2" (25.4 / 2 mm) drive shank. Designed for mechanical fastening tasks that require a 12-spline interface, this kit provides a compact selection of bits for workshop, automotive and general repair work. The set is intended to fit standard 1/2" bit holders, impact sockets, and adaptors for use with ratchets and torque tools.

Advantages

The set offers hardened, precision-machined tips for consistent engagement with 12-spline fasteners, reducing the risk of cam-out and wear. The 1/2" shank size ensures compatibility with widely used sockets and drive tools, while the 9.5 mm tip dimension matches common spline profiles. Supplied as a compact 10-piece assortment, the set provides replacements and options for varied fastening positions and reduces the need to switch between incompatible bits during repair jobs.

Suitable for

• Automotive repair and maintenance where 12-spline fasteners are used
• Mechanical assembly and disassembly tasks requiring a 1/2" drive
• Industrial and workshop fastening jobs with spline-head screws
• DIY projects that demand durable, precise screwdriver bits

Key specifications

• Number of pieces: 10
• Tip type: 12-spline flange
• Tip dimension: 9.5 mm
• Shank / drive size: 1/2" (25.4 / 2 mm)
• Material and finish: hardened steel (precision-machined tips)

How to use

Select the appropriate 12-spline bit from the set and insert its 1/2" shank into a compatible bit holder, socket adapter, or ratchet. Ensure the bit seats fully in the fastener head before applying torque. For controlled torque applications, use a torque wrench or torque-limiting adapter compatible with a 1/2" drive. Inspect bits for wear or damage before use and replace any worn bits to maintain safe engagement with fasteners.

Usage recommendations

Use the bits with tools rated for the required torque and avoid excessive side load. Store the bits in a dry, organized case to prevent corrosion and tip damage; replace bits that show rounding or chipping to avoid fastener damage.