Metallics JSH1 Screw Hooks 2 X .135 St-zn (Jar 100)

That is the typical use. The JSH1 is a wood screw thread hook, 2 inches overall with a .135 shank, so it drives into wood joists, studs and blocking and the open hook takes cable bundles, drop cords, or a hanger wire. It is an electrical fastener, not a rated support hanger, so pick a hook based on the weight you are hanging and the holding power of the wood you are driving into.

No. The JSH1 is a screw hook with a .135 shank sized for wood, so it needs a wood substrate like a joist, stud or blocking. For concrete you need a drop-in or screw anchor with a hook, and for steel studs or metal deck a hook you can thread or a beam clamp. Driving this hook into masonry will strip the thread without holding.

Yes, the JSH1 is steel with a zinc plating (St-zn). That plating suits dry interior work, damp basements and mechanical rooms. For sustained outdoor exposure or washdown areas, a stainless or hot dip galvanized hook holds up longer.

No, JSH1 is a single configuration: 2 inches by .135, steel zinc plated, 100 to the jar. There is no finish or length choice to specify when ordering. If you need a longer reach or a heavier shank, you are looking at a different Metallics hook number rather than an option on this one.

On softwood framing you can usually drive the JSH1 by hand or with a hook driver. In hardwood, trim, or near a board edge, a pilot hole slightly under the .135 shank diameter keeps the wood from splitting and makes the 2 inch hook easier to seat fully.

The 100 count jar is the stocking quantity for MRO and service work, which is why it is packaged that way rather than in a contractor bulk box. One jar of JSH1 hooks covers a van or a maintenance cage for routine cable hanging, sign and tool hanging, and temporary lighting drops without reordering per job.