Value Collection 307240BR Hex Socket Caprew 1-8 Unc

Product Description

The VALUE COLLECTION 307240BR is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features a 1-8 UNC thread size with a 4-inch length under the head and a 5/8-inch hex drive. The screw is partially threaded, which provides a smooth shank section for shear-load applications and improved clamping force. Manufactured from alloy steel with a black oxide finish, it meets ASTM A574 requirements for mechanical properties. Licensed trades and maintenance professionals use this fastener where high tensile strength and a low-profile socket-head design are required.

This cap screw is suited for use in machinery, equipment frames, tooling fixtures, and structural mechanical assemblies where a flush or recessed fastener head is necessary. The 1-8 UNC coarse thread is appropriate for general-purpose fastening into steel, cast iron, and aluminum components. The partial thread configuration is typically selected when bolt grip length and shear resistance are priorities over full thread engagement.

Key Features

• 1-8 UNC coarse thread for reliable engagement in standard tapped holes
• 4-inch length under head with partial threading for improved shear performance
• 5/8-inch hex socket drive compatible with standard Allen keys and hex bit drivers
• Alloy steel construction meets ASTM A574 mechanical strength requirements
• Black oxide finish provides mild corrosion resistance and reduces light reflection

Compatibility

Designed as a direct-fit replacement or standard-spec fastener for assemblies requiring a 1-8 UNC partially threaded hex socket cap screw conforming to ASTM A574.

Installation Notes

Installation should be performed by qualified mechanical, industrial, or maintenance trade professionals. Always verify the tapped hole thread spec and depth before installation. Use the correct 5/8-inch hex key or socket-head driver and apply torque per the assembly engineered specification — do not over-torque alloy socket cap screws in soft base materials. Confirm the fastener is fully seated and that the partial thread shank is positioned within the grip zone of the joint.