Value Collection 011517BR Hex Socket Cap Screw 7/8-9 Unc

Product Description

The VALUE COLLECTION 011517BR is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Sized at 7/8-9 UNC with a 6-inch length under head, this screw is partially threaded and accepts a 3/4-inch hex drive. Constructed from alloy steel with a black oxide finish, it provides solid corrosion resistance and surface hardness appropriate for demanding service environments. It is commonly installed by millwrights, maintenance mechanics, and fabricators working with heavy equipment, machinery frames, and structural steel assemblies.

This cap screw is suited for use in industrial machinery, heavy equipment fabrication, structural steel connections, and general mechanical assembly where high tensile strength and a recessed drive profile are required. The 7/8-9 UNC thread form is standard for inch-series fastening in North American manufacturing and repair environments. Partial threading allows the shank to act as a shoulder reference in close-tolerance bores.

Key Features

• 7/8-9 UNC thread form for standard inch-series fastening
• 6 inches of length under head with partial threading for shoulder-fit applications
• 3/4-inch hex socket drive for use with standard hex keys and socket drivers
• Alloy steel construction for high tensile and shear strength
• Black oxide finish for mild corrosion resistance and reduced light reflection
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as an OEM-style replacement or new-install fastener for industrial machinery, structural assemblies, and mechanical equipment requiring 7/8-9 UNC inch-series cap screws with a hex socket drive.

Installation Notes

Installation is typically performed by millwrights, maintenance mechanics, or fabricators using a calibrated torque wrench and a 3/4-inch hex key or socket bit. De-energize and lockout/tagout all equipment before fastener replacement or installation. Apply a thread lubricant or anti-seize compound where specifications call for it to achieve accurate clamp load. Follow applicable ASME or equipment OEM torque guidelines for 7/8-9 UNC alloy steel fasteners.