Value Collection 581667BR Hex Socket Cap Screw 5/8-11 Unc

Product Description

The VALUE COLLECTION 581667BR is a hex socket cap screw designed for high-strength fastening applications in mechanical assembly, fabrication, and maintenance work. The fastener measures 12 inches in length under the head and is partially threaded along its shank. It is manufactured from alloy steel with a black oxide finish applied for corrosion resistance and reduced surface reflectivity. The 5/8-11 UNC thread pattern is a coarse-thread specification suited for applications requiring rapid assembly or where minor thread damage is a concern. Drive size is 1/2 inch hex socket. Machinists, millwrights, and maintenance technicians are the typical installers.

This screw is suited for structural and mechanical connections in industrial equipment, machinery frames, jigs, fixtures, and heavy fabrication assemblies. The partially threaded shank provides a bearing surface in the clearance hole, which improves shear resistance. The alloy steel construction supports high clamping loads and tensile strength requirements. The black oxide coating provides mild rust inhibition and is commonly used in controlled shop environments or where parts will be further coated or lubricated after assembly.

Key Features

• 5/8-11 UNC coarse thread for reliable engagement in standard tapped holes
• 12-inch length under head accommodates deep-reach and long-grip fastening applications
• Partially threaded shank improves shear load distribution in clearance holes
• 1/2-inch hex socket drive compatible with standard hex keys and socket drive tools
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM A574 standards
• Black oxide finish provides mild corrosion resistance and low-glare surface

Compatibility

Designed for use in any application requiring a 5/8-11 UNC hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

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 drive. Ensure the mating tapped hole is clean, free of debris, and properly dimensioned to ASME/ANSI B18.3 tolerances before installation. Apply a thread lubricant or anti-seize compound as appropriate for the service environment to achieve accurate clamp load. Do not over-torque alloy steel fasteners in blind holes or soft base materials.