Torx, Hex & Spline Bit Set with 3/8" & 1/2" Drive Adaptors – 40pcs

This 40-piece YATO screwdriver bit set combines Torx, Hex and Spline profiles for specialist fastening tasks in automotive and mechanical servicing. Made from S2 alloy steel with a hardness of 58–62 HRC, the bits are designed to resist twisting and high tightening torques. Each profile is supplied in 30 mm and 75 mm lengths, while two adaptors allow the 10 mm hex-shank bits to be used with compatible 3/8" and 1/2" square-drive tools. A practical storage case keeps the assortment organised.

Basic details

• Product name: YATO Torx, Hex & Spline Screwdriver Bit Set

• Model / symbol: YT-0400

• Series: GRD

• Number of pieces: 40

• Bit profiles: Torx, Hex and Spline

• Bit lengths: 30 mm and 75 mm

• Bit shank: 10 mm hexagonal

• Bit material: S2 alloy steel

• Bit hardness: 58–62 HRC

• Tip finish: Sandblasted

• Adaptor material: CrV 6150 steel

• Included adaptor drive sizes: 3/8" and 1/2"

• Storage: Carrying case.

Sizes and contents

The set also includes:

• 1 × 3/8" square-drive adaptor for 10 mm hex-shank bits.

• 1 × 1/2" square-drive adaptor for 10 mm hex-shank bits.

• Storage case.

The 40-piece tool count comprises 38 bits and two adaptors; the storage case is additional.

Design and construction

• S2 alloy steel bits with a uniform, fine-grained material structure.

• Hardened to 58–62 HRC for durability and resistance to twisting.

• Sandblasted working tips.

• Two bit lengths provide options for different access requirements.

• CrV 6150 steel adaptors connect the bits to compatible square-drive tools.

• Carrying case keeps the bits and adaptors together for storage and transport.

Typical applications

• Automotive servicing involving Torx, Hex and Spline fasteners.

• Specialist mechanical repair and maintenance.

• Tightening and loosening compatible special-profile screws.

• Professional and home workshop tasks requiring the included bit sizes.