Grade 8, 9-16"-18 Hex Head Cap Screw, Black Oxide Steel, 4-1-2 in L, 5 PK U04160.056.0450

The ZORO SELECT - U04160.056.0450 is a Hex Head Cap Screw, a type of fastener characterized by its hexagonal-shaped head. Constructed of steel and coated with black oxide, a treatment known to offer certain levels of durability and corrosion resistance, this screw is manufactured according to ASME B18.2.1 dimensional standards which are commonly recognized in many industrial applications. Drive: The external hex drive requires a wrench or socket of the same shape for application.Fastener Length: With a length of 4-1/2 inches, this is the maximum depth it could potentially reach into material when used as intended.Globally Sourced: Procured from international manufacturers providing diverse range of quality and price options.Material Grade/Class: Grade 8 standard indicating strength, hardness, and resistance properties suitable for various applications.Rockwell Hardness: HRC33 measure indicates a level of hardness that can provide some degree of penetration resistance under certain conditions.Tensile Strength: Tested under controlled conditions to handle up to 150,000 psi tensile stress; actual performance may vary based on usage conditions.Thread Direction & Style: Right hand thread direction tightens clockwise while partially threaded style allows flexibility in different types of applications