Ko-ken Tools 1 in Square Drive 6-Point Socket, 51mm - 8400M-51

Koken 1 inch square drive 6 point socket in 51 mm is built to support high torque fastening tasks in automotive, industrial, and heavy equipment service environments. Produced to strict dimensional tolerances, this socket delivers consistent and accurate engagement with metric fasteners, helping maintain controlled torque transfer during tightening and removal. The 6 point profile applies force to the flat sides of the fastener, supporting secure contact under load and helping minimize rounding during repeated use. Carefully balanced wall thickness provides the strength needed for demanding applications while maintaining a practical outer diameter for use with professional tool systems. Koken's precision machining processes and rigorous quality control standards contribute to dependable long term performance and resistance to wear under continuous high load conditions. The accurately machined drive end ensures stable connection with 1 inch square drive ratchets, extensions, and torque tools, while the refined surface finish supports corrosion resistance and straightforward cleaning, reflecting the professional craftsmanship associated with Koken.

Specifications:

• Drive Shape: Square
• H Size: 36mm
• Input Drive Size: 1 in
• Length: 70mm
• Opening: 6-Point
• Output Size: 51mm
• D1 Size: 75.3mm
• D2 Size: 66mm