Metallics JG5HTB35 Bolts 1/2-13 X 3 G5 Hx Tap Blt St-zn (Jar 50)

Yes. A hex tap bolt is fully threaded for its whole 3 inch length, which is the difference between it and a standard hex cap screw with a grip length. Thread is 1/2-13 UNC, right hand, and the body measures 0.4930 to 0.5000 inch outside diameter. Full threading means you can tap into blind holes and set your own engagement depth rather than working around an unthreaded shank.

It will, provided the hole is tapped 1/2-13 UNC. That is the standard coarse thread for a half inch bolt, and the thread conforms to ASME B18.2.1-2012 so it mates with any standard 1/2-13 nut or tapped hole. If the existing hardware is 1/2-20 fine thread, this is the wrong bolt.

Across the flats the hex head measures 0.736 to 0.750 inch, so a 3/4 inch socket or wrench is the one you want. Corner to corner the head runs 0.840 to 0.866 inch, which matters if you are working in a tight pocket or against an obstruction.

Grade 5 is medium carbon steel, heat treated, rated at 105,000 psi minimum tensile with hardness in the Rockwell C19-30 range. Grade 2 fasteners are unhardened and considerably weaker, which is why Grade 5 is what gets specified for mounting motors, machinery and equipment that sees vibration and load. For anything requiring alloy strength above this, you would be looking at Grade 8.

The finish is zinc plating over steel, which handles indoor and sheltered industrial work and gives moderate corrosion resistance. For sustained wet, coastal or washdown exposure, zinc plate will eventually bloom and then rust, so stainless or hot dip galvanized is the better call there. The base steel is in the AISI 1008-1026 range.

These ship 50 to a jar, and 50 pieces is the minimum order quantity. The jar pack keeps them together on a service truck or in a parts bin rather than loose in a carton. Metallics lists other sizes and quantities in the G5HTB and JG5HTB series by request if 3 inch or a 50 count is not what the job needs.

The JG5HTB35 is flagged as both ARRA compliant and Buy American compliant in Metallics' product data, with country of origin listed as China. On a federal or ARRA funded project, confirm which standard your specification actually invokes, since those two designations carry different domestic content tests.

Mounting motors to machinery is the main application, and they see heavy use in automotive and truck repair. Anywhere a half inch fastener has to pull into a tapped hole or through a bracket with a nut and take vibration, a heat treated Grade 5 tap bolt at 105,000 psi minimum tensile is the common choice. Fifty in a jar is a service truck or maintenance shop quantity.