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The VALUE COLLECTION -33648-1 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, fixtures, and structural joints. It features a 7/16-14 UNC thread size, a 1-1/2 inch length under head, and a 3/8 inch hex drive socket. Constructed from alloy steel with a black oxide finish, this fastener delivers solid tensile strength and moderate corrosion resistance. It is fully threaded, conforming to ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for precision-fit applications where dimensional consistency and load capacity matter.
This cap screw is suited for use in industrial machinery, equipment frames, tool fixtures, and general mechanical assemblies where a recessed hex drive is preferred over an external hex head. The 7/16-14 UNC coarse thread pattern provides reliable engagement in steel and cast iron tapped holes. The black oxide coating offers mild corrosion resistance and reduces light reflection, making it a common choice in both shop and field environments. This item is sold individually but carries a minimum order quantity of 25 units.
Designed as a standard ASME/ANSI B18.3 hex socket cap screw compatible with any 7/16-14 UNC tapped hole application requiring a fully threaded alloy steel fastener.
Installation is performed with a 3/8 inch hex key or T-handle driver; use of a calibrated torque wrench is recommended to avoid over-torquing alloy steel fasteners in tapped blind holes. Ensure the mating tapped hole is clean, free of debris, and dimensionally correct for 7/16-14 UNC thread engagement before installation. Black oxide fasteners are not intended as a primary corrosion barrier in wet or outdoor environments without additional protective treatment.
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