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The L H DOTTIE CO MB342 is a 3/4-10 x 2 inch hex head tap bolt used to fasten structural and mechanical assemblies in trade installations. The 3/4-10 thread designation indicates a 3/4-inch nominal diameter with 10 threads per inch, a coarse-thread specification common in heavy-duty hardware applications. The hex head drive allows standard wrench or socket installation. This fastener is sold individually and is stocked as a hardware accessory for electrical, mechanical, and construction trade use.
This tap bolt is suited for structural fastening tasks encountered by electricians, HVAC mechanics, plumbers, and general construction trades. It is commonly used to secure equipment bases, mounting brackets, strut systems, and steel-to-steel connections where a through-bolt and nut configuration is required. The coarse thread profile provides reliable engagement in standard tapped holes or with a mating hex nut.
Designed as a standard coarse-thread hex head tap bolt for general hardware and structural fastening applications across electrical, HVAC, plumbing, and mechanical trades.
Installation is performed by electricians, HVAC technicians, plumbers, or general mechanical trades using standard open-end, box, or socket wrenches sized for a 3/4-inch hex head. De-energize or shut down any equipment before fastening components to live systems. Verify thread compatibility with mating hardware before installation. Follow applicable mechanical and structural codes for torque and fastener grade requirements on the specific application.
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