Value Collection HCI20310175-100BX Hex Head Bolt 5/16-18

Product Description

The VALUE COLLECTION HCI20310175-100BX is a 5/16-18 UNC hex head bolt designed for general-purpose fastening in mechanical, structural, and maintenance applications. Made from Grade 2 steel with a bright uncoated finish, this bolt measures 1-3/4 inches in length under the head and features partial threading along the shank. It meets ASTM A307 standards, making it suitable for low-carbon steel fastening applications where controlled tensile strength is required. Sold in a minimum order quantity of 100 pieces, this bolt is a practical choice for contractors, maintenance technicians, and tradespeople stocking hardware for repetitive assembly or repair work.

This hex head bolt is suited for light structural connections, equipment assembly, and general fastening tasks in residential and commercial construction, HVAC equipment mounting, plumbing fixture support, and electrical panel or conduit installation. The 5/16-18 UNC thread size is one of the most common inch-series coarse thread specifications, and the partial threading allows the unthreaded shank to provide a cleaner bearing surface in through-bolt applications. The uncoated finish is appropriate for interior or protected installations where corrosion resistance is not a primary requirement.

Key Features

• 5/16-18 UNC coarse thread for broad compatibility with standard nuts and tapped holes
• 1-3/4 inches length under head for medium-depth through-bolt and clearance-hole applications
• Grade 2 steel construction meets ASTM A307 tensile strength requirements
• Partially threaded shank provides a clean bearing surface in structural connections
• Bright uncoated finish suitable for interior and protected installations
• Sold in multiples of 100 for efficient stocking and bulk fastening jobs

Compatibility

Designed as a standard 5/16-18 UNC hex head bolt compatible with any 5/16-18 hex nut, coupling nut, or tapped hole machined to ASME B1.1 inch-series coarse thread specifications.

Installation Notes

Installation is performed with a standard 1/2-inch hex wrench or socket driver. Ensure mating threads are clean and free of debris before fastening. For structural applications governed by building codes, verify that Grade 2 ASTM A307 fasteners meet the load requirements specified in the project design documents. Do not substitute Grade 2 bolts in applications that specify higher-grade fasteners such as SAE Grade 5, Grade 8, or ASTM A325.