Customer reviews for Metric Black Oxide 12.9 Alloy Steel Socket Head Cap Screw, Hex Socket Drive, M16-2.00, 55 mm Length (Pack of 25)
These turned out to be useless to me, the description stated they weren't fully threaded, but didn't state just how not fully threaded they were. I'm going to have to get a die that will go further up, I'm having trouble finding M5 bolts that meet my requirements and these were the closest. The picture is very misleading.
Metric Black Oxide 12.9 Alloy Steel Socket Head Cap Screw, Hex Socket Drive, M16-2.00, 55 mm Length (Pack of 25) Review by K. Yi
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 retail store.
Metric Black Oxide 12.9 Alloy Steel Socket Head Cap Screw, Hex Socket Drive, M16-2.00, 55 mm Length (Pack of 25) Review by Just a guy (Westchester, NY)
I bought these to fit my VESA plasma mount and they work perfectly. I use a washer behind the head. They are strong and beefy screws. They arrive in a small plastic bag that is not resealable.
Metric Black Oxide 12.9 Alloy Steel Socket Head Cap Screw, Hex Socket Drive, M16-2.00, 55 mm Length (Pack of 25):: 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. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.
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You can Buy Metric Black Oxide 12.9 Alloy Steel Socket Head Cap Screw, Hex Socket Drive, M16-2.00, 55 mm Length (Pack of 25) In Stock.
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