Metallics JG5HTB7 Bolts 1/4-20 X 3-1/2 G5 Hx Tap Blt S (Jar 100)

That is the stated use for the Metallics hex tap bolt: mounting motors to machinery, plus automotive and truck repair. It is medium carbon steel, heat treated, Grade 5, with 105,000 psi minimum tensile and yield strength and a hardness of Rockwell C19-30. For motor feet and equipment bases that is the normal spec, and it is a real step up from a Grade 2 hardware-store bolt.

Head width across the flats runs 0.428 to 0.438 inch, so a 7/16 inch wrench or socket is the right tool. Across the corners the head measures 0.488 to 0.505 inch, which is the clearance figure to check if you are driving it inside a counterbore or a tight motor bracket pocket.

Body diameter measures 0.2450 to 0.2500 inch, so a 1/4 inch nominal bolt. For a through hole, 9/32 inch gives normal clearance and 5/16 inch gives oversize clearance for field-drilled steel. For a tapped hole in steel, 1/4-20 taps with a #7 drill.

Finish is zinc on a steel bolt. Zinc plating is a mild corrosion coating meant for dry or sheltered service, so it is fine inside a plant, a mechanical room, or a vehicle chassis. For sustained wet, coastal, or chemical exposure, specify a hot-dip galvanized or 18-8 stainless bolt instead, since plated zinc will bloom and rust in those conditions.

The JG5HTB7 ships as a jar of 100 bolts, with 100 count as the order minimum. The jar packaging is what distinguishes the JG5HTB prefix from the bulk G5HTB numbering in the same series, so if you want loose bulk rather than a jar on the van, you are looking at the G5HTB part number.

No. The JG5HTB7 jar is bolts only. If you are bolting through rather than into a tapped hole, order 1/4-20 hex nuts separately, plus flat and lock washers as your detail calls for. Match the nut grade to the bolt, Grade 5 bolts pair with a Grade 5 (or higher) nut.

The record carries both an ARRA compliant and a Buy American compliant flag on this bolt, with country of origin China. On a federally funded project where the specification demands domestically melted and manufactured fasteners, bring both of those facts to the engineer before you submit, because the two can be read differently depending on which clause your contract invokes.

Threads and head dimensions follow ASME B18.2.1-2012, the inch hex bolt and screw standard, and the steel falls in the AISI 1008 to 1026 range. That combination is what lets a submittal reviewer accept it as a standard Grade 5 inch hex tap bolt rather than a proprietary fastener, and it is why the 7/16 head and 1/4-20 thread will interchange with any other conforming bolt on the job.