Metric Black Oxide 12.9 Alloy Steel Socket Head Cap Screw, Hex Socket Drive, M16-1.50, 80 mm Length (Pack of 25)
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Customer Review
Just the right size
Had some speakers I was trying to mount and the included bolts weren't long enough. These corrected the issue perfectly.
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Great product
I got this because my LBS (Bike Store) didn't have any and I needed it for an odd part on my bike. So, I bought 50 and very pleased although I need maybe 3!great delivery with no issues.
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Decent hardware.
Good quality hardware is hard to find, and most often priced way too high usually unreal specifications. I've been purchasing nuts and bolts from different merchants, either on-line or thru local hardware stores, and the Small Parts provides most realiable hardware I experienced. Grove accompanied with hard material fits firmly to hex tools, eliminating heartbreaking stripping of hex tools or the screw head.Search for material hardness in 12.9 spec screw. I use two(2) m2.5 sized screw for the prop driven motor mount onto a homemade model airplane, drawing excess of 60Amps. The model plane crashed many times, yet have not had sigle screw failing me. This screw is so finely build, it will snap the shaft of hex tool before grove is stripped off. I'd imagin better screw would be the ones fabricated with 100% titanium or other exotic material with much tigher tolerance commonly used for military application, costing excess of $10-$20 a piece, if one can buy it from a...
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Product Description
Socket Cap Screws are reliable and durable and are used in many applications. They are available in a variety of head styles and materials.
Alloy Steel is steel that has been alloyed with other materials to improve overall physical properties. Steels are designated by a 4 number SAE Steel grade. The first two digits indicate the primary materials used to form the steel. The last 2 digits identify the percentage of carbon for the alloy (in hundredths). Tensile strength ranges for the alloys typically used in these fasteners range from 170,000 to 180,000 psi (pounds per square inch), making these amongst the strongest of materials.
With a high cylindrical head, socket cap head fasteners have a recessed driving area and offer high hold power at high torque levels. Hex socket drive systems are driven by hex wrenches or power tools with hexagonal bits.
A threaded fastener's size name includes information about the major external diameter (in millimeters), followed by the thread pitch (millimeters per thread), which indicates if it is coarse or fine. Fine threads are preferable when working with harder materials or when threading into a thin material. They are also stronger in tension than coarse threads, and generally provide higher shear strengths. Top to learn more

