Value Collection 015501BR Hex Socket Cap Screw 7/8-9 Unc

Product Description

The VALUE COLLECTION 015501BR is a hex socket cap screw designed for high-strength fastening applications. It features a 7/8-9 UNC thread size with a 2-3/4 inch length under head and a 3/4 inch hex drive. The screw is partially threaded, making it well suited for clamping applications where the unthreaded shank bears shear loads. Constructed from alloy steel with a black oxide finish, it offers solid mechanical strength and moderate corrosion resistance in indoor and light-duty industrial environments. Machinists, maintenance technicians, and assembly professionals install this type of fastener where a flush or low-profile socket head is required.

This cap screw is used in general industrial assembly, machinery maintenance, and structural fastening where a hex socket drive is preferred over external-drive fasteners. The partial threading allows precise clamping force distribution and is common in fixture work, press assemblies, and equipment frames. It conforms to ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, meeting dimensional and mechanical property requirements expected in industrial fastener applications.

Key Features

• 7/8-9 UNC thread for heavy-duty clamping applications
• 2-3/4 inch length under head with partial threading for shear-load bearing
• 3/4 inch hex socket drive for torque application with standard hex keys or socket tooling
• Alloy steel construction provides high tensile and shear strength
• Black oxide finish offers moderate corrosion resistance and reduces light reflection
• Meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards

Compatibility

Designed as an OEM-style replacement or direct-install hex socket cap screw for industrial machinery, fixtures, and structural assemblies requiring a 7/8-9 UNC partially threaded fastener.

Installation Notes

Installation should be performed by qualified machinists or maintenance technicians using a calibrated torque wrench and a properly sized 3/4 inch hex key or socket bit. Verify thread engagement and hole depth before installation to avoid bottoming out. Follow applicable fastener torque guidelines per ASME standards for alloy steel socket cap screws. Do not reuse fasteners that show signs of thread damage, corrosion, or deformation.