Value Collection 307248BR Hex Socket Cap Screw 1-8 Unc

Product Description

The VALUE COLLECTION 307248BR is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. This screw features a 1-8 UNC thread size and measures 7 inches in length under the head, with partial threading along the shank. The 5/8-inch hex drive accepts a standard hex key or Allen wrench. Manufactured from alloy steel with a black oxide coating, it meets ASTM A574 requirements, making it suitable for applications that demand reliable clamping force and corrosion resistance. Machinists, millwrights, and maintenance technicians commonly install this fastener in heavy equipment, tooling fixtures, and machinery frames.

This cap screw is suited for use in industrial and commercial environments where a partially threaded alloy steel fastener is required. The 1-8 UNC coarse thread form is compatible with standard tapped holes and threaded inserts of the same thread specification. Typical applications include machine bases, press tooling, structural brackets, and general mechanical assemblies requiring a strong, recessed-head fastener. The black oxide finish provides mild corrosion resistance and reduces light reflection on finished assemblies.

Key Features

• 1-8 UNC coarse thread for compatibility with standard tapped holes
• 7 inches length under head with partial threading along the shank
• 5/8-inch hex socket drive for use with standard hex keys or Allen wrenches
• Alloy steel construction meets ASTM A574 fastener standard for high-strength service
• Black oxide coating for mild corrosion resistance and low-reflectance finish

Compatibility

Designed as a direct-fit replacement or standard fastener for applications requiring a 1-8 UNC partially threaded hex socket cap screw meeting ASTM A574 specifications.

Installation Notes

Installation is performed by machinists, millwrights, or qualified maintenance personnel using a calibrated hex key or Allen driver sized to 5/8 inch. Ensure the mating tapped hole is clean, free of debris, and correctly sized for 1-8 UNC thread engagement before installation. Apply thread lubricant or anti-seize compound as required by the application to achieve accurate clamp load. Always follow applicable mechanical assembly standards and equipment manufacturer torque guidelines when specifying preload.