Value Collection -33686-2 Hex Socket Cap Screw 5/8-11

Product Description

The VALUE COLLECTION -33686-2 is a hex socket cap screw designed for medium-to-heavy fastening applications in industrial, mechanical, and structural assemblies. It features a 5/8-11 UNC thread form and measures 3-1/4 inches in length under the head. Drive is a 1/2-inch hex socket, requiring a standard Allen-type hex key or socket driver. The fastener is manufactured from alloy steel and finished with a black oxide coating that provides mild corrosion resistance and reduces light reflection. Threading is partial, following ASME/ANSI B18.3 and ASTM A574 standards, which govern dimensional tolerances and mechanical strength requirements for socket cap screws.

This screw is suited for use in machinery, tooling fixtures, equipment frames, and general mechanical assemblies where high-strength fastening is required. The partially threaded shank provides shear strength in load-bearing joint applications. The black oxide finish makes it a common choice in manufacturing environments where low-profile, dark-finish hardware is specified. Machinists, millwrights, and maintenance technicians are the primary installers for this fastener type.

Key Features

• 5/8-11 UNC thread size for high-strength bolted connections
• 3-1/4 inch length under head with partial threading for shear-load joints
• 1/2-inch hex socket drive compatible with standard Allen keys and socket drivers
• Alloy steel construction meets ASTM A574 mechanical property requirements
• Black oxide finish provides mild corrosion resistance and low-reflectance appearance
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in any application specifying a 5/8-11 UNC partially threaded socket cap screw with a 3-1/4-inch length under head.

Installation Notes

Installation should be performed by a qualified machinist, millwright, or maintenance technician using a calibrated torque wrench and the appropriate 1/2-inch hex key or socket bit. Always ensure mating threads are clean and free of debris before driving the fastener. Do not exceed recommended torque for the joint material and do not use power tools at full speed when starting the thread to avoid cross-threading. Follow applicable facility or equipment manufacturer torque specifications for 5/8-11 UNC alloy steel fasteners.