Value Collection 581856BR Hex Socket Cap Screw 1-14 Unf

Product Description

The VALUE COLLECTION 581856BR is a hex socket cap screw designed for high-strength bolted assemblies requiring a recessed drive interface. It is threaded 1-14 UNF, indicating a 1-inch nominal diameter with a fine thread pitch of 14 threads per inch. The fastener measures 8 inches in length under the head and uses a 3/4-inch hex (Allen) socket drive. Constructed from alloy steel with a black oxide finish, it delivers solid mechanical strength and moderate corrosion resistance in controlled environments. This fastener is partially threaded, which is standard for longer cap screws used in load-bearing joints. It is typically installed by machinists, millwrights, and maintenance technicians.

This screw is suited for heavy industrial, mechanical, and structural applications where a flush or recessed fastener head is required. The 1-14 UNF thread form provides finer thread engagement than coarse-thread equivalents, making it appropriate for applications that demand precise torque control or where vibration resistance is a priority. It is commonly used in machine frames, fixtures, die sets, and heavy equipment assemblies. The partial thread pattern allows for full bearing load to be carried through the unthreaded shank in clearance-hole applications.

Key Features

• 1-14 UNF fine thread form for precise thread engagement and vibration resistance
• 8 inches of length under head accommodates deep or stacked assemblies
• 3/4-inch hex socket drive for use with standard Allen keys or hex socket drivers
• Alloy steel construction for high tensile and shear strength
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Partially threaded shank suitable for shear-loaded clearance-hole joints
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as an OEM-style and aftermarket replacement hex socket cap screw for industrial machinery, structural fixtures, and mechanical assemblies requiring a 1-14 UNF thread specification.

Installation Notes

Installation should be performed by qualified machinists, millwrights, or maintenance technicians familiar with torque requirements for alloy steel fasteners of this thread class. De-energize and lock out all equipment before fastener installation or removal in accordance with applicable OSHA lockout/tagout procedures. Use a properly sized 3/4-inch hex socket or Allen key to avoid rounding the drive socket. Apply a thread lubricant or anti-seize compound as appropriate for the joint design and service environment to achieve accurate clamp load during torque application.