L H Dottie Co MB12312 Hex Head Bolt 1/2-13 X 3.5in

Product Description

The L H DOTTIE CO MB12312 is a 1/2-13 x 3-1/2 inch hex head bolt designed for general hardware and fastener applications in mechanical, electrical, and HVAC trade work. The 1/2-13 designation indicates a 1/2-inch nominal diameter with 13 threads per inch, conforming to standard UNC (Unified National Coarse) thread spec. At 3-1/2 inches in length, this bolt suits medium-depth fastening tasks where a standard hex drive and wrenching surface are needed. It is sold individually and is a common stock item for field techs and installers who need to replace or supplement hardware on equipment mounts, brackets, and structural connections.

This bolt is suited for use in residential and light commercial trade environments. Common applications include equipment mounting, conduit support bracketing, panel and enclosure fastening, and general structural assembly tasks encountered by HVAC technicians, electricians, plumbers, and general contractors. Its standard UNC thread pattern makes it widely compatible with nuts, threaded inserts, and tapped holes found across common trade hardware.

Key Features

• 1/2-13 UNC thread pattern for broad compatibility with standard hardware
• 3-1/2 inch grip length suited for medium-depth fastening applications
• Hex head design allows use with standard wrenches and socket sets
• Sold individually for precise quantity control on service calls

Compatibility

Designed as a standard UNC hex head fastener suitable for general hardware, equipment mounting, and structural fastening applications common in HVAC, electrical, and plumbing trade work.

Installation Notes

Installation is performed by the applicable licensed trade or general contractor depending on the application. Always de-energize electrical equipment and follow lockout/tagout procedures before replacing or tightening mounting hardware on live systems. Use the appropriate wrench or socket to achieve proper seating without stripping the hex head. Fastener selection and torque should comply with the equipment manufacturer specifications and applicable codes including NEC or IFGC where relevant.