Metallics JG5HSF1412 Bolt 1/4-20 x 1/2 Ind Hx Hd Serr Fl (Jar 100)

It's a 1/4-20 x 1/2 inch bolt, so 1/4 inch diameter with 20 threads per inch (standard UNC coarse thread) and a 1/2 inch length under the head. That 1/4-20 thread mates with standard 1/4-20 nuts and tapped holes, and the short 1/2 inch grip suits thin sheet metal, strut, and enclosure work rather than thick stack-ups.

No separate washer is needed. The JG5HSF1412 is an indented hex head bolt with a serrated flange, so the integral flange spreads the bearing load like a washer and the serrations bite the mating surface to resist loosening from vibration. That's why electricians use this style on strut, enclosures, and panel assembly where a loose washer is one more thing to drop.

100 pieces, supplied in a jar rather than a bag or box. The jar pack is what keeps a bin of 1/4-20 x 1/2 hex flange bolts organized on a service van or at a shop bench without the fasteners spilling.

Yes, as long as your strut nuts are 1/4-20. The JG5HSF1412 is a 1/4-20 thread, and a 1/2 inch length gives enough engagement through a single strap or bracket into a channel nut while staying short enough not to bottom out inside the channel. For thicker brackets or stacked clamps, step up to a longer 1/4-20 bolt instead.

The JG5HSF1412 is sold as an electrical-trade fastener, grouped with bolts for electrical supply work such as enclosure, strut, and device mounting. It is not a graded structural bolt, so don't substitute it where a drawing calls out a specific bolt grade or torque spec.