Value Collection 581976BR Hex Socket Cap Screw 1-3/4-5 Unc

Product Description

The VALUE COLLECTION 581976BR is a hex socket cap screw designed for heavy-duty fastening applications requiring high clamping strength and precise torque transfer. This screw features a 1-3/4-5 UNC thread size and measures 4-1/2 inches in length under head. The 1-1/4-inch hex drive socket head accepts a standard hex key for installation into confined or recessed locations where a conventional bolt head would not fit. Manufactured from alloy steel with a black oxide finish coating, it meets ASME/ANSI B18.3 and ASTM A574 standards. The fully threaded body provides consistent engagement along the entire shank length. Machinists, millwrights, and maintenance technicians install this fastener type across industrial, structural, and mechanical assembly applications.

This cap screw is suited for use in machinery frames, industrial equipment, jigs, fixtures, and structural assemblies where a flush or recessed fastener head is required. The coarse 5-TPI UNC thread pitch allows fast installation and performs reliably in applications subject to vibration. The black oxide coating provides mild corrosion resistance and reduces light reflection on exposed surfaces. It is commonly found in manufacturing, fabrication, and heavy equipment maintenance environments.

Key Features

• 1-3/4-5 UNC coarse thread for fast engagement and vibration resistance
• 4-1/2-inch length under head accommodates deep or stacked assemblies
• 1-1/4-inch hex socket drive for high-torque installation with standard hex keys
• Fully threaded body maximizes thread engagement length
• Alloy steel construction meets ASTM A574 high-strength fastener requirements
• Black oxide coating provides mild corrosion resistance and low-glare finish

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for tapped holes with 1-3/4-5 UNC internal threads in machinery frames, structural steel, and industrial equipment assemblies.

Installation Notes

Installation is performed by machinists, millwrights, or qualified maintenance technicians. Verify tapped hole thread size and depth before installation. Use a calibrated torque wrench with the appropriate 1-1/4-inch hex bit to achieve the required clamping load without overdriving. De-energize and lock out equipment per applicable OSHA lockout/tagout procedures before servicing any fastened assembly.