Metallics JMHTB1070 Bolts M10 X 70 C8.8 Hx Tap Blt St-zn (Jar 50)

It's an M10 x 70 mm hex tap bolt in class 8.8 steel with a zinc finish. M10 is the thread diameter, 70 mm is the length under the head, and class 8.8 is a medium-carbon steel property class commonly specified for structural and equipment mounting work. Ordering reference is Metallics JMHTB1070.

A hex tap bolt is threaded full length right up to the head, so you get thread engagement no matter how deep the joint is. A partially threaded hex cap screw has a smooth shank section, which is what you want when the shank should bear in a reamed hole. The JMHTB1070 is the tap bolt version at M10 x 70 mm, so it suits tapped holes and through-bolted assemblies with a nut where full-length thread is an advantage.

Fifty pieces, packaged in a jar rather than a loose box, which keeps the count intact on a service truck or in a bin. Each piece is an M10 x 70 mm class 8.8 zinc hex tap bolt.

Zinc plating on the JMHTB1070 is a general purpose coating that handles indoor and sheltered conditions and resists handling corrosion in storage. For sustained outdoor exposure, washdown areas, or anywhere near coastal salt, step up to hot dip galvanized or stainless. The zinc layer here is thin plating, not a galvanized coating.

No. The jar of 50 is bolts only. If you are through-bolting rather than driving into a tapped hole, order M10 class 8 or class 10 hex nuts and M10 flat and lock washers separately to match the zinc finish.

M10 without a pitch callout is coarse thread, 1.5 mm pitch, which is the standard metric coarse series. Confirm the tapped hole or nut in your assembly is coarse and not M10 x 1.25 fine before you drive these in.