Screwdriver bit YATO YT-04357 — 12-spline flange M17, length 100 mm, 1/2" shank

YATO YT-04357 is a single screwdriver bit with a 12-spline flange tip sized M17, 100 mm overall length and a 1/2" (25.4 / 2 mm) shank designed for use with 1/2" drive holders and sockets. Manufactured from chromium-vanadium steel, this bit provides the geometry and strength required for applications that demand positive 12-spline engagement. It is intended for professional and workshop environments where controlled torque transfer and accurate fit to spline fasteners are required.

Advantages

The 12-spline flange geometry ensures reliable contact with matching fasteners, reducing the risk of rounding or cam-out under load. Constructed from chromium-vanadium steel, the bit combines hardness and toughness for repeated use in automotive and mechanical repair tasks. The 100 mm length offers extended reach in recessed or hard-to-access fasteners while the 1/2" shank provides compatibility with common drive tools, torque wrenches and socket adapters.

Suitable for

• Automotive spline flange fasteners
• Mechanical assembly and disassembly
• Industrial maintenance and repair
• Workshops requiring 1/2" drive compatibility

Key specifications

• Tip type: 12-spline flange, M17
• Length: 100 mm
• Shank: 1/2" (25.4 / 2 mm)
• Material: Chromium-vanadium steel
• Pack quantity: single piece

How to use

Select a compatible 1/2" drive holder or socket adapter and securely insert the 1/2" shank of the bit. Engage the 12-spline flange tip with the mating fastener ensuring full seating before applying torque. Apply steady pressure and avoid excessive impact forces unless the bit and tool are rated for impact use. After use, inspect the tip for wear and store in a bit holder or tool chest to prevent damage.

Usage recommendations

Use appropriate torque settings and tools matched to the fastener specification. Replace the bit if visible rounding or wear appears on the spline surfaces to maintain safe and accurate engagement.