Metallics JG5HSF3858 Bolt 3/8-16 x 5/8 Ind Hx Hd Serr Fl (Jar 100)

It's a 3/8-16 x 5/8 inch bolt, so a coarse 3/8 inch thread at 16 threads per inch with a 5/8 inch length under the head. It mates with standard 3/8-16 nuts and tapped holes, and the short 5/8 inch grip suits thin-material and channel work rather than thick stack-ups.

No. The Metallics JG5HSF3858 is an indented hex head bolt with an integral serrated flange, so the flange spreads the clamp load the way a washer would and the serrations bite the surface to resist loosening under vibration. One piece, one hand on the wrench.

100 bolts per jar. Metallics packs this 3/8-16 x 5/8 serrated flange bolt in jar packaging, which is the practical count for a service van or an electrical room bin rather than a single-job pull.

That's exactly the trade it's made for. The serrated flange on the JG5HSF3858 replaces the flat washer and lock washer combination, so you carry one fastener instead of three loose pieces and the serrations do the anti-rotation job. Where the serrations matter less, on a painted or finished surface you don't want scored, a plain hex bolt with a flat washer is the kinder choice because the teeth will mar the coating.

Yes, JG5HSF3858 is the Metallics manufacturer part number for the 3/8-16 x 5/8 indented hex head serrated flange bolt supplied 100 to a jar. That's the number to quote on a purchase order or match against an existing bin label.

It's an indented hex head on a 3/8-16 body, so it drives with a standard hex socket or open end wrench. No Torx, no internal drive. The indented head means the flats are formed rather than fully machined, which is normal on flange bolts and doesn't change the wrench fit.