Value Collection 015151PR Hex Socket Cap Screw 1/4-20 Unc

Product Description

The VALUE COLLECTION 015151PR is a hex socket cap screw designed for secure, high-strength fastening in mechanical assemblies, fixtures, and equipment. It features a 1/4-20 UNC thread pattern and measures 7/8 inches under the head with full threading along the entire shank. The 3/16-inch hex drive socket accepts a standard hex key or Allen wrench. Constructed from alloy steel with a black oxide finish, this fastener resists corrosion and meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards. Machinists, millwrights, and maintenance technicians commonly use this type of fastener in tight-clearance applications where a recessed drive is required.

This cap screw is suited for use in general industrial, mechanical, and equipment assembly applications where a compact, flush or low-profile fastener head is needed. The 1/4-20 UNC coarse thread is one of the most common unified thread standards in North American mechanical work, making this fastener widely applicable across machine frames, brackets, panels, and component mounting situations in both shop and field environments.

Key Features

• 1/4-20 UNC coarse thread for broad compatibility with standard tapped holes
• 7/8-inch length under head with full threading along the entire shank
• 3/16-inch hex socket drive accepts standard hex keys or Allen drivers
• Alloy steel construction meets ASTM A574 high-strength cap screw requirements
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Conforms to ASME/ANSI B18.3 and IFI 124 dimensional standards

Compatibility

Designed as a standard replacement or stock fastener for any application requiring a 1/4-20 UNC hex socket cap screw with a 7/8-inch length under head. Fits all standard 1/4-20 UNC tapped holes per ASME/ANSI B18.3 specifications.

Installation Notes

Installation is typically performed by machinists, maintenance technicians, or millwrights using a 3/16-inch hex key or Allen driver. Ensure the mating tapped hole is clean and free of debris before driving the fastener. Do not exceed the rated drive torque for the fastener size, and avoid using impact drivers without appropriate hex socket adapters rated for the fastener grade. Follow applicable ASME or facility-specific torque guidelines for 1/4-20 alloy steel cap screws.