Metallics JG5HTB12 Bolts 1/2-13 X 2-1/4 G5 Hx Tap Blt S (Jar 50)

It's a 1/2-13 UNC right-hand thread, 13 threads per inch, so it threads straight into any standard 1/2-13 tapped hole or 1/2-13 nut. Shank outside diameter runs 0.4930 to 0.5000 in., and the thread conforms to ASME B18.2.1-2012 for hex bolt dimensions.

Grade 5, with 105,000 psi minimum tensile and 105,000 psi minimum yield, and a hardness of Rockwell C19-30. Steel body per AISI 1008-1026 material standard, zinc finished. That's the normal rating for motor mounting, machinery, and automotive or truck repair work. If your drawing calls for Grade 8, this won't substitute.

Metallics flags the JG5HTB12 as both Buy American compliant and ARRA compliant in its product data, with country of origin listed as China. If your contract language requires domestic melt and manufacture rather than the broader compliance flag, verify the flag against your specific contract clause before submitting.

A hex tap bolt is threaded full length rather than having a plain shank under the head, which is what you want when you're pulling into a tapped hole and need thread engagement right up to the bearing surface. Metallics describes the JG5HTB12 as a heat-treated medium carbon steel cap screw in a hex tap bolt configuration. If your joint is a through-bolt with a long grip length, a partially threaded hex cap screw is the better choice since the unthreaded body carries shear better.

Across-flats width on the hex head measures 0.736 to 0.750 in., which is a 3/4 inch wrench or socket. The head type is a standard hex.

The finish is zinc on steel, which is a mild corrosion coating meant for dry or sheltered service. For sustained outdoor exposure, washdown areas, or anything coastal, specify hot dip galvanized or 18-8 stainless instead. Metallics notes other sizes and quantities are available by request.

They ship 50 count in a jar, and 50 is the order minimum, so one jar is the smallest buy. Net weight of the jar is 3216 g. For an MRO crib or a motor-mount kit that gets rebuilt regularly, the jar keeps the count fixed rather than loose bulk.

That's the stated application. Metallics lists the JG5HTB12 for mounting motors to machinery, plus automotive and truck repair. The full-length thread suits tapped motor bases, and at Grade 5 with 105,000 psi minimum tensile it handles normal motor mounting torque. You will need to supply your own flat washers, lock washers, or nuts separately, since the jar contains bolts only.