If you are looking at your next home improvement project, make sure to find the right type of screw. The right type of screw will ensure your project stays healthy longer, but saves you time of not having to fix your mistakes. Check out a variety of screws, including square head bolts and specialty screws and bolts, for your next project.
There is no universally accepted distinction between a screw and bolt. There are several different types of screws available to you on a project. ASME standards specify a variety of “Machine Screws” in diameters ranging up to 0.75 inches or 9.05 mm. Hex Cap Screws and Hex Cap Bolts are similar, but they differ mostly in that they are manufactured to tighter tolerances than the corresponding bolts. A lag screw or lag bolt are basically large wood screws. The head is typically an external hex.
Screw sizes are indicated by numbers: the higher the number, the wider and thicker the screw. SAE J429 defines the bolt grades for inch-system sized bolts and screws. SAE grades 5 and 8 are the most common. A screw thread is a helical structure used to convert between rotational and linear movement to force. A screw thread is a ridge wrapped around a cylinder or cone in the form of a helix. More screw threads are produced each year than any other machine element.
The majority of screws are fastened in a clockwise rotation. The flat head, otherwise known as a slotted screwdriver, was the first known head for a screwdriver. In the United States, the first handheld screwdriver appeared on the market in the 1800’s. A screw drive is the system used to turn a screw. There are several different external types including square, hex head cap screw and pentagon. There are also slotted types (slot and cross), cruciform types (Phillips and Frearson) and Robertson (square).
In order to keep your project on track make sure to use the right screws, including square head bolts. This will ensure the durability of your project and make sure you do not have any delays in construction. Find the right screws for your next project and ensure everything stays on track.