Types of bolts

Types of bolts. Knowing the types of shoulder bolts can help you choose SAE bolt grades are indicated by numbers, where higher numbers correspond to greater tensile strength. They have six sides and are used in conjunction with bolts to secure materials together. They are used to secure two or more materials together and are commonly used in wood-to-metal and metal-to-metal connections. Lightweight crossbow bolts weigh around 350-399 grains. Jul 8, 2023 · Screws are used for joining different parts of machines. Carriage bolts have a smooth, dome-shaped head and a square shank. Finishes. The drive is a slot where the tip of the screwdriver will fit to rotate the screw. Hammer-drive screws, also known as U-drive screws, are designed for heavy-duty fastening. Often driven into tapped holes. Hardened steel bolts have increased strength and are often used in automotive assemblies. Available in interior and exterior styles. Nov 7, 2023 · Eye Bolts. A few of the most common types of screws are below. Domed – resists tampering. Zinc-plated bolts have limited corrosion resistance and are best for indoor use. The bolt has a relatively low profile, with the underside featuring two fins or nubs. Used with nuts and washers, also known as “stove bolts” or “stovers”. Security screw. There is a huge range of types of fastener, each with its own properties and applications. Drive Type. Other bent bar bolts include ‘U’ bolts used in attaching such things as signs, and eyebolts – used for creating secure attachment points. These are essentially standard screws with tamper-proof heads. The bearing surface shall be flat and washer-faced, and the point is chamfered. They main difference is that screws are used to screw into a threaded hole. Nov 5, 2023 · Better known as a double-ended screw, it is used to join two pieces of wood. Depending on the bolt class, the size range varies from M1. Jun 5, 2023 · The bolts can also be coated with corrosion-resistant platings such as zinc, cadmium, and nickel to protect the bolt from its exposed environment. Hammer-drive screw. Nov 9, 2022 · Commonly used in white goods, computers and vehicles. Anchor Bolt: ( Types of Bolts ) Bolt with threaded portion at one end and a non threaded l shaped on to the other end of the anchor bolt. Oval Head- Oval head screws are a combination of a countersunk head and a domed head. Their diameter is comparatively smaller than bolts. Conclusion. Buy Decking Screw From Amazon. Feb 20, 2023 · #1 Drive. Please note the bolt heads may also include the manufacturer's identification stamp, especially with high strength bolts. These types of bolts are very much similar to hexagonal-shaped cap screws. Countersinks easily and resists rusting. Hex Bolts Hex bolts are among the most widely-used types of bolts, featuring six-sided heads and varying in size and length. Feb 8, 2024 · Additional bolt types: The other bolt types that the company can custom manufacture include anchor, belt (e. hanger bolt. Jan 5, 2023 · Square nuts. The size of a metric bolt is specified using pitch, diameter, and length in millimeters. Apr 27, 2023 · Carriage Bolts. Carriage bolts feature reduced body diameters and enlarged, domed heads. Certain special bolts can only be obtained through other methods, such as monster drops or specialist shops . There are five different types of screws that the average DIY enthusiast will work with on a regular basis. Jul 14, 2021 · Bent bar masonry anchors come in different shapes, the most commonly used being the ‘L’ and ‘J’ shaped anchors. Hex. Square. Available in a variety of drive types and heads, they fit a wide variety of applications. Jan 27, 2023 · Types of countersunk screw heads include: Flat Head- Flat head screws install completely flush with the material’s surface. The most common grading system used for bolts in the U. Use 1-5/8-in. In conclusion, various shoulder bolts are available on the market, and each type is unique and suited for specific applications. Decking Screws. MDF Screws. That’s why a nut and bolt are said to be a pair that is used to hold different components. Buy Now - Machine Screws. These types of bolts are employed in confined places with moving elements such as elevators and conveyor belts. We in our daily life don’t think about bolts and their types but without nuts and Oct 21, 2022 · 5. Fasteners are used in a wide variety of applications, including aerospace, automotive, construction, and industrial machinery. The common class (grades) for metric are 5. dowel screw. Hex bolts, also known as hex head bolts or hexagon bolts, are the most common type of bolts. Great for decks (as the name suggests). Bent bar bolts are used to fix embed plates and columns into concrete. Photo: amazon. Jul 4, 2022 · A bolt is a type of fastener that is used to hold two or more mechanical components either stationary or under motion. Within this standard, bolt grades include Grades 1, 2, 5, 5. These parts are also known as screw heads. S. Fasteners in some categories are available with different drive types such as Philips or Slotted. Coarse threads, smooth shank, tapered head. Figure 2: Nuts are available in a variety of shapes, sizes and materials. At the same time, the standard or moderate range is considered between 399-459 grains. Screws with threads for use with a nut or tapped hole. Conclusion: Whether you’re a professional engineer, a hobbyist working in the garage, or just want to learn more about DIY projects, it’s important to know the basics of bolts and nuts. Unlike screws, It requires a nut to get fastened. A hanger bolt is used when it is necessary to fasten a metal part to a wood surface. Aug 12, 2020 · This post will be a visual aid for some of the different types of screws and bolts focusing on different heads, drive types, and bearing surfaces. These are used in the construction industry for many projects including cabinets, countertops, stairs, furniture, and more. There are many different types of bolts, each of which has its own advantages and disadvantages. Square head bolt. They are used in rigging and other applications where lifting or tension is required. Mirror Screws. Additionally, the hook bolt can be used to secure electrical Mar 1, 2023 · 5. Bolt come in a variety of varieties and have a variety of property classes, including 8. Similar to a wood screw but with two pointed ends and no head, used for making hidden joints between two pieces of wood. Nov 27, 2023 · The types of nuts, bolts, washers, and rivets explained in this blog provide a broad range of options to choose from, depending on the specific application requirements. Attaches wood, plastic, and other metal to sheet metal. Screws with a smooth shank and tapered point for use in wood. Sep 21, 2023 · The most common types of roofing bolts include: 1. Most types of bolts are made using a combination of the Smithing and Fletching skills; the metal component is made with Smithing, and feathers are added with Fletching. Drywall screw. Structural Heavy Hex. 6 through M100 and beyond. For help identifying different fastener categories see our Fastener Type Chart. Hex Bolts and Nuts: Recognizable by their hexagonal heads and nuts, these are standard fasteners used in a wide range of applications. 8, 8. To increase the tensile strength; some bolts, screws, are partially threaded with a shoulder below the head. You’ll also need to countersink these screws to accommodate the angle. 2. Heavy bolts start with the weight range of 460 grains and go above. Dec 6, 2023 · Hook Bolt: The hook bolt is a unique roofing type with a hook-shaped head and a threaded shank. It is commonly used to secure roof trusses and other structural elements in place. 0*20, the “M” means the Metric thread designation, the digit 8 refers to the Nominal diameter (in millimeters), 1. Round heads are not as common as some of the other types of bolt heads, but they can be used in applications where a more decorative appearance is desired. This screw can be screwed or driven twice the speed of other screw types due to its double thread design. Sep 22, 2020 · A bolt has external male threads on one end and a hexagonal head on the other. Here are some common types of bolts: 1. These fins are meant to keep the bolt from turning into the timber. Typically used with square-headed bolts. The “bearing surface” or underside of the head, is where the fastener head makes contact with the device. The square head allows a better wrench grip during fastening. See pictures and examples of hex, cap, wing, lock, and other nuts and bolts. U-bolt. Types of Nuts Hex Nuts. These bolts can lock themselves. A hexagonal head that can be tightened or loosened with a wrench or socket. A Crossbow bolt comes in 3 different weight ranges: Light, Moderate or Standard, and Heavy. Different types of threads are cut on screws. Elevator Bolts. Sep 15, 2021 · Learn about the different types of nuts and bolts, their shapes, sizes, materials, and thread patterns. For example, grades 8. Apr 21, 2023 · Used to build and repair decks. Jun 21, 2023 · The different types of bolt heads include: Hex – the most common bolt head. A screw may be considered a helix wound around a cylinder. Apr 10, 2021 · There are various types of bolts, each designed for specific applications and requirements. 8, & 10. Square – enables a secure grip with a wrench or pliers. Wood Screws. 0 refers to the pitch, and 20 refers to the Nov 5, 2023 · Better known as a double-ended screw, it is used to join two pieces of wood. Aug 18, 2020 · Metric bolts are referenced using “M” sizes, such as the M8 bolt size. Applications. To prevent the bolt from rotating when the nut is tightened, either a square or ribbed neck can be used. Below is a list of the most common types. These screws are available in a variety of sizes and lengths and are ideal for securing decking panels to frames. However, occasionally the area adjoining the two parts contains perpendicular ribs. Large wooden beams are used in many different types of construction from homes, to large decks, docks, pergolas, and more. Common classes are 5. They have a hexagonal-shaped head and a threaded shaft. TYPES OF BOLT :- Anchor Bolt. Fastener Categories. Twinfast Screws. Hex nuts are the most common type of nut. Should only be used for decks and no other structural wood. Some common types of fasteners include bolts, rivets, screws, nuts, washers, and rivets. Let’s delve into the various types of bolts used in these applications: Hex Bolts Lag Bolt or Screws. May 31, 2023 · Carriage Bolts. A Sheet metal screw with a self drilling point. The hook-shaped head provides an anchoring point that can be used to attach other fixtures and fittings. A bolt is a type of fastener that is used to connect Jun 9, 2021 · Purchase 1-1/4-in. Choose a length that will penetrate the lowest board by 2/3 of its thickness. Nov 15, 2023 · Bolts and nuts are the unsung heroes of construction and various industries, holding everything together. Designed with a hexagonal head. Jun 6, 2023 · Stainless steel nuts, bolts and washers are typically suitable for exterior projects and work with pressure-treated lumber. May 31, 2023 · Common Types of Bolts. It’s essential to choose the right type of fastener to ensure a secure and reliable connection between two objects. Toggle bolts (or drywall toggle anchors) are among the strongest drywall anchor types available. Eye bolts have a circular ring at the top, making them ideal for attaching cables or ropes. They are widely employed in industries such as construction, machinery, and automotive. 1. Sheet metal screws – These have sharper threads to more easily connect metal to wood, plastic or other pieces of metal. Flat – ideal when space is limited. Machine screws with a thread cutting (self tapping) point. Ideally, the lower part of this bolt is square-shaped. The bolt is normally fastened with a nut on the other end. Different types of hex nuts all provide a reliable hold. Bent – for non-linear configuration. A heavy hex bolt made of alloy steel. Use for basic wood construction. Read more about them here. A machine screw is a screw or bolt with a flat point. For example, in M8-1. Types of nuts. Bolts are heavy ranged ammunition used by crossbows. Uses of Bolts and Nuts. 8 bolt has a UTS, at which it fails, is 800 MPa and will receive 80% (640 MPa) of this value. Sep 8, 2021 · Round bolt head: A Dome’s head. Used only with MDF wood. A round head is often used for decorative purposes. These types of bolts are also referred to as screws and are designed to be driven using a grip wrench. Mar 29, 2024 · Different Types Of Screws. Raised Heads (Oval Head) Raised heads, sometimes known as oval-shaped heads, have an angle much like flat screws but have more of a dome-shaped head. is the SAE system, but you can find metric grading systems as well. Each grade has a specific bolt strength. A bolt’s weight is determined by its kind, material grade, length, diameter, type of head, and the number of nuts attached to it. handrail bolt. Ex. A carriage bolt comes with a dome-shaped, smooth upper body that is flush-mounted. ( Types of Screw Heads) 3. com. Decking screws are carbon steel or stainless-steel screws that are used to secure composite boards or wooden to wood or metal. Unlike a flat screw, the head of a raised screw will come out of the surface slightly. Here is a breakdown of the Machine Screws. Advantages of Bolts and Nuts. In this article, we will explore the vast world of bolts and nuts, diving into their types, materials, applications, and the future trends shaping this essential industry. Carriage Bolts: Featuring a smooth, rounded head, carriage bolts are often used in woodworking and structural applications. Hex Head Bolt: Also known as hexagon head bolts or hex cap screws, these bolts have a hexagonal head that requires a wrench or socket for tightening or loosening. 9, 12. Place bolts feature self-locking, free-spinning hex heads that prevent loosening due to vibration. Screws are quite similar to the bolts which also has a head on one end and a thread on the other head. Hex bolt head: A hexagonal head. There are several grades of bolts but the three common grades for SAE are 2, 5 and 8. Fully threaded screws with a point for use in sheet metal. A heavy duty screw/bolt meant for wood. Jul 20, 2023 · Lag screws are primarily used to hold large wooden members together. A Type 3 bolt is approximately twice as resistant to Dec 9, 2021 · 2. There are a variety of sizes and shapes of drives available. Timber Bolt. They are ideal for securing timber to metal structures. Break away or shear nuts. There are various types of screws which can be used according to the site requirement, like cap screws, machine screws, wood screws etc. There are many types of bolts, all with different features and use cases. This chart helps to identify the grades of bolts using the identification marks on the bolt's head along with the strength and hardness of common grade bolts. Jan 17, 2024 · Diverse Types of Bolts and Nuts: A Closer Look. 0 refers to the pitch, and 20 refers to the Jun 16, 2023 · Bolt. 9. Bolt Grade Markings & Strength Chart - Inch Steel Bolts. Sometimes, one of the parts has a threaded hole to replace the bolt and minimise the number of components. Feb 20, 2024 · Here are the various types of bolts: 1. Hex Bolts. A hanger bolt has wood screw threads on one end and machine threads on the other. . Each type provides some trade-offs. Coach Bolts: These are heavy-duty bolts with a square or hexagonal head and a threaded shank that is partially or fully threaded. Lag bolt. Wood Screw, Sheet Metal Screw, Hex Bolt, Lag Bolt, etc. g. These bolts are often employed in construction and machinery projects. Each of these is a family of products Mar 17, 2023 · Types of Bolts. Toggle Bolts. Used in structural steel joints in heavy construction when greater yield and tensile strengths than those of an A325 bolt are required. There are many different types of bolts to choose from. While there are numerous types of fasteners in the world of hardware, bolts stand out as some of the most utilized, particularly in heavy-duty applications. Decimals are used to denote variations within the same strength level. These screw lengths ensure the screw drives completely through the drywall and into at least half the thickness of a standard stud to provide a secure hold. The heads of the screws are of different types. Their diameter is up to about 1/4″. 8, 10. Machine screws – These have a uniform A Crossbow bolt comes in 3 different weight ranges: Light, Moderate or Standard, and Heavy. Carriage bolts are available in different lengths and sizes and are commonly used in construction and furniture assembly. Usually made of rust-resistant, zinc-plated steel or stainless ASTM A490 Type 1 & 3. Hex bolts are used in a wide range of applications, including construction, machinery, and automotive. In other categories such as lag bolts there is either only one drive type or the drive type is Mar 14, 2021 · 22. screws when attaching standard 5/8-inch-thick drywall to ceilings studs. SAE bolt grades are indicated by numbers, where higher numbers correspond to greater tensile strength. Only that, they have a 4-sided square head instead of a 6-sided hex head. 2, 8, and 8. 2, with nominal sizes ranging from ¼ to 1 ½ inches, depending on the specific bolt grade. Elevator bolts have a slender body and a rounded head, and they are threaded. 3. Wood screws – These are the most common wood fastener types and are specifically designed to attach wooden boards and planks. Bolts. 8, 9. Timber bolts go by many names such as economy bolts, dome head bolts, fender head bolts, safety head bolts, and mushroom head bolts. A type of blind nut, its shape means that more of its surface is in contact with the material being, which reduces the chances of it loosening. The screw is mainly divided into four parts The first number is the ultimate tensile strengths (UTS) in MPA divided by 100, & the second numbers are the ratio of yield strength to UTS. Pentagon – specialized applications where security is needed. Sheet Metal Screws. Here are the most common types. No need for pilot holes. 9, and so on. Source: National Bolt & Nut Corporation Hex bolt. , eye, hook, J and U), countersunk, lag and T-handle bolts. Used with medium- density fiberboard. Any timbers that have a thickness greater than that of a two-by typically call for the use of a lag screw in some capacity. 9 and 12. #6 drywall screws when attaching standard 1/2-inch-thick drywall to wood studs. Essentially longer screws. Generally found with washer & nut (rust resistant Property). qa zj vo er gu mp vj vs vt ue