Value Collection 33719 Hex Socket Cap Screw 1-8 Unc Alloy Steel

Product Description

The VALUE COLLECTION 33719 is a partially threaded hex socket cap screw engineered for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features a 1-8 UNC thread size and measures 7 inches in length under the head. The 3/4-inch hex drive socket accepts a standard Allen or hex key for installation and removal. Constructed from alloy steel with a black oxide coating, this fastener delivers solid corrosion resistance in moderate environments while maintaining the tensile strength expected of alloy-grade hardware. It meets ASME/ANSI B18.3 and ASTM A574 standards.

This screw is suited for machinery assembly, tooling fixtures, equipment maintenance, and general industrial fastening tasks where a recessed-drive, high-strength cap screw is required. The partial threading allows it to clamp two workpieces effectively, with the unthreaded shank providing a precise fit in clearance holes. It is commonly installed by millwrights, maintenance technicians, and mechanical contractors working on heavy equipment or structural assemblies.

Key Features

• 1-8 UNC thread size for high-load fastening in standard coarse-thread applications
• 7-inch length under head with partial threading for reliable clamping action
• 3/4-inch hex socket drive for use with standard Allen keys or hex-bit sockets
• Alloy steel construction meets ASTM A574 high-strength socket screw specification
• Black oxide finish provides moderate corrosion resistance and reduced light reflection
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 and ASTM A574 compliant hex socket cap screw suitable for use in any application requiring a 1-8 UNC coarse-thread, partially threaded alloy steel fastener with a 3/4-inch hex drive.

Installation Notes

Installation should be performed with a calibrated torque wrench and a properly sized 3/4-inch hex key or hex-bit socket to avoid rounding the drive recess. Always verify the mating thread is clean and undamaged before installation. Follow applicable machinery manufacturer torque specifications and relevant ASME standards for the assembly being serviced. Wear appropriate PPE when handling alloy steel fasteners in shop or field environments.