Value Collection -33718-6 Hex Socket Cap Screw 1-8 Unc

Product Description

The VALUE COLLECTION -33718-6 is a partially threaded hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features a 1-8 UNC thread size, a 6-inch length under head, and a 3/4-inch hex drive. Constructed from alloy steel with a black oxide coating, this screw delivers corrosion resistance and reduced light reflection in demanding service environments. It meets ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for precision mechanical assemblies where torque and tensile strength requirements are critical.

This cap screw is commonly used in heavy equipment, machine frames, tooling fixtures, and industrial fabrication where a recessed drive and high clamping force are required. The partial threading allows for greater shank bearing area in clearance holes, which is preferred in applications with shear loading or where precise alignment between mating components is necessary. Installation is performed by maintenance technicians, millwrights, and machinists across manufacturing and industrial settings.

Key Features

• 1-8 UNC thread for broad compatibility with standard inch-series tapped holes
• 6-inch length under head suits deep or stacked assembly fastening needs
• 3/4-inch hex socket drive for high-torque installation with standard Allen keys or socket tooling
• Partially threaded shank provides improved shear resistance and alignment in clearance-hole applications
• Alloy steel construction with black oxide finish for strength and mild corrosion resistance
• Meets ASME/ANSI B18.3 and ASTM A574 standards for dimensional and mechanical compliance

Compatibility

Designed as a standard inch-series hex socket cap screw suitable for use in any 1-8 UNC tapped hole application requiring a 6-inch partially threaded fastener per ASME/ANSI B18.3 specifications.

Installation Notes

Installation should be performed by qualified technicians using a 3/4-inch hex key or socket driver rated for the required torque. De-energize and lockout any equipment before fastener installation or removal per applicable OSHA lockout/tagout procedures. Do not overtighten; consult the equipment manufacturer's torque specifications for 1-8 UNC alloy steel fasteners. Inspect threads and mating tapped holes for damage or contamination before installation to ensure full thread engagement.