Hillman Fasteners 190330 Hex Bolt 1/2-13 X 4 in 25 Pack

Product Description

The HILLMAN FASTENERS 190330 is a 1/2-13 x 4-inch hex bolt made from low carbon steel with a coarse thread pattern. Each pack contains 25 bolts, making it a practical quantity for job sites and maintenance shops. The 1/2-13 designation indicates a 1/2-inch nominal diameter with 13 threads per inch, conforming to standard Unified Coarse (UNC) thread specification. These bolts are driven with a standard hex head and are suited for general structural fastening applications. Plumbers, electricians, HVAC techs, and general contractors reach for this fastener when securing brackets, equipment supports, and mechanical assemblies.

This bolt is appropriate for general-purpose fastening in residential and light commercial construction and mechanical installation work. Common use cases include mounting equipment bases, attaching structural brackets, and assembling support frames in HVAC, plumbing, and electrical rough-in work. The coarse UNC thread engages quickly and resists cross-threading, which matters on busy job sites. The 4-inch length accommodates thicker assemblies where shorter fasteners fall short. Sold in a 25-count box, this SKU suits both single-task jobs and ongoing service work.

Key Features

• 1/2-13 UNC coarse thread for fast engagement and reliable grip
• 4-inch length handles thicker structural and mechanical assemblies
• Low carbon steel construction provides adequate strength for general-purpose fastening
• Standard hex head compatible with common wrenches and sockets
• 25-bolt pack quantity reduces reorder frequency on active job sites

Compatibility

Designed as a general-purpose 1/2-13 UNC coarse thread hex bolt suitable for use with standard 1/2-13 nuts and threaded inserts in typical structural and mechanical fastening applications.

Installation Notes

Installation requires a standard hex wrench or socket set sized for a 1/2-inch hex head fastener. Power down or de-energize any equipment before fastening components in electrical or HVAC applications. Follow applicable code requirements, including NEC or IFGC guidelines where fasteners are used to secure equipment. Do not use low carbon steel fasteners in environments with high corrosion exposure without appropriate protective coatings or substitution of a rated stainless or galvanized fastener.