Unbrako 1/2x3-1/4 inch Grade 8 Half Threaded UNC Hex Head Bolt/Screw, 170411 (Pack of 25)

The Unbrako fastener brand name is widely recognized throughout the world. The Unbrako brand is over 80 years olddeveloped in the 1920s and today is recognized as the brand and performance leader in over 25 industrialized countries. Unbrako socket screws are used in machine tools tools and dies earth moving and mining machinery and a wide range of industrial and engineering applications. Unbrako runs in-process Statistical Process Control on selected dynamic dimensional characteristics of their products. Unbrako is very proud to be registered to the International Quality System ISO 9001 since 1996.

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