The Unbrako alloy steel set screw has a black oxide finish, knurled cup point, and hex socket drive, and meets American Society of Mechanical Engineers ASME B18.3 specifications. The knurled cup point has a serrated edge that grips the mating surface with enough power for use in permanent and semi-permanent applications and helps resist loosening due to vibration. Alloy steel is often used in applications where strength is the primary consideration, and the black oxide finish offers mild corrosion resistance and lubricity. The hex socket drive, also known as an internal hex drive, has a hexagonal slot that requires an Allen key driver, also known as a hex key or Allen wrench.Set screws are threaded fasteners that typically do not have an external head. They fasten objects together to secure their placement, often in semi-permanent applications and where fine adjustment is needed since they do not require drilled holes in the object it is clamping against. Set screws are available with a variety of point styles, which determine how the screw interacts with the object it is placed against.Unbrako manufactures high-strength socket screws and other fasteners, including dowel pins and shoulder screws. The company, founded more than 80 years ago, meets International Organization for Standardization (ISO) standards 9001:2000 and TS 16949:2002.
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