Holo-krome 730002140 Hex Socket Cap Screw 7/16-20 Unf

Product Description

The HOLO-KROME 730002140 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, industrial equipment, and fabrication work. It features a 7/16-20 UNF thread size and a 3/8-inch hex drive, allowing installation with a standard hex key or Allen driver. The screw is 3.5 inches in length under the head and is partially threaded, providing controlled engagement depth. Constructed from alloy steel with a black oxide finish, it delivers reliable tensile strength and basic corrosion resistance. This fastener meets ASME B18.3 and ASTM A574 standards, making it suitable for demanding structural and mechanical applications.

This cap screw is used in general industrial, mechanical, and machinery assembly applications where fine-thread UNF engagement and high clamp load are required. The partial threading is appropriate for applications where the shank must pass through a clearance hole before engaging a tapped bore. Machinists, maintenance technicians, and industrial assemblers commonly specify this fastener when working with precision-fit joints that require controlled thread engagement and repeatable torque values.

Key Features

• 7/16-20 UNF thread for fine-pitch engagement and higher clamping force compared to coarse-thread equivalents
• 3.5 inches length under head with partial threading for clearance-hole applications
• 3/8-inch hex socket drive compatible with standard hex keys and Allen wrenches
• Alloy steel construction provides high tensile strength suitable for structural fastening
• Black oxide finish offers mild corrosion resistance and reduced light reflection
• Meets ASME B18.3 and ASTM A574 standards for dimensional and mechanical compliance

Compatibility

Designed as a standard ASME B18.3 hex socket cap screw for use in any application requiring a 7/16-20 UNF partially threaded fastener with a 3/8-inch hex drive.

Installation Notes

Installation is performed using a 3/8-inch hex key or appropriately sized Allen driver. Ensure the receiving thread is clean, properly tapped to 7/16-20 UNF, and free of debris before installation. Torque to the value specified in the applicable engineering or assembly documentation for alloy steel fasteners of this grade. Do not exceed rated torque or use impact tools without confirming fastener and joint suitability.