These bolts are available in various designs, which suitably fit into almost every industry. Also known as a coach bolt, has a domed or countersunk head. Socket screws are machine screws with an internal hex socket allen drive. Chart of nut, bolt and screw types screws, bolts, nut. Sep 30, 2016 with the help of below charts you can identify almost any type of bolt and screw different types of fasteners, head styles in fasteners, drive types in fasteners, washer types in fasteners and nut types in fasteners. Try to criticize each design along the way so your hand pump doesnt suffer. Typically used for wood construction and landscaping. A point designed to fasten material of varying types to steel. In this article, you will learn about the types of nuts and bolts. A bolt contains two parts a shank and a head, the cylindrical portion of the bolt is known as shank. Bolts as well as screws are available in a vast variety of head shapes.
Scroll down to learn about many different types of nuts, bolts and screws. Bolt and nut types pdf a sheet metal screw with a self drilling point. Revision information log guide for approved fasteners october 3, 2008 effective date description of change. Antivibration selflock screw and flange nut set with low neck. Standard bolt size is measured from the surface of the material to its end. Simply knowing the head type on a screw or bolt can let you know what type of screwdriver or socket type you will need so you do not strip or cross thread your fastener. Cheat guide chart bolts, screws, washers, nuts, drive charts working on a project and trying to find the name of a special bolt type. Individual sizes should be checked before specifying any. Certain types are sometimes referred to as stove bolts. The shank is threaded at the tail end for a sufficient length. Bolt, nut, screw, rivet, and washer manufacturing 1997economiccensus manufacturing industryseries 1997 issuednovember1999 ec97m3327c u. Full fastener products dowedo ningbo windo metal co. An acorn nuts has roughly the same design as a cap nut, except that its rounded end has a higher crown. With the help of below charts you can identify almost any type of bolt and screw different types of fasteners, head styles in fasteners, drive types in fasteners, washer types in fasteners and nut types in fasteners.
Bolts come in several configurations for their application and specification variances. Specification for structural joints using highstrength bolts, august 1, 2014 research council on structural connections viii vu required strength in shear factored shear load, kips db nominal diameter of bolt, in. The nut is a type of a fastener which has a threaded hole in it. A cap nut is closed on one end, with a smoothlydomed top. Most commonly used in the bulk production of bolts, screws, nuts for general engineering. Nylon insert jam lock a nylock nut with a reduced height. The square section under the head grips into the part being fastened preventing the bolt from turning when the nut is tightened. The nut is always used in joining with a mating bolt to fasten various parts together.
Nut types pdf print format this chart shows the different styles of nuts used in the manufacturing industry. Individual sizes should be checked before specifying any equipment. Abbreviated hhmb or lvanized nuts and washers will fit galvanized bolts. Different forms and types of nuts and bolts are as follows.
Tee a nut designed to be driven into wood to create a threaded hole. Tamperresistant screws are variations of some of the most common types, such as torx, phillips, and hex. They will learn how to measure a bolt and determine the thread type by using a thread gauge. A bolt is a form of threaded fastener with an external male thread. Mar 28, 2018 the two types of coating on astm a325 bolting assemblies are hotdip galvanized and mechanical galvanized. These nutss may have different thread counts for the different types of bolts. Can i put a hotdip galvanized nut on a mechanical galvanized.
The two partners are kept together by a combination of their threads friction with slight elastic deformation, a slight stretching of the bolt, and compression of the parts to be held together. Since the terms bolt and screw were in use before the advent of easilyproduced helix fasteners, they are often synonymous. The most common type of bolt head types includes square, hex, slotted hex washer and socket cap. Acorn acorn nuts are a high crown type of cap nut,used for appearance. Lag bolts, or lag screws, are large wood screws with hex heads. What types of screws, nuts, washers and bolts are used in a. It is against astm standards to mix the two coatings on a single bolting component. The distinction between a bolt and a screw is commonly misunderstood.
Srjc, engr45, 2012 the nuts and bolts behind engineering. What is a nut a nut is a type of fastener with a threaded hole. This specification contains 4 inch series bolting grades. The shank is threaded at the tail end for a sufficient length so as to effectively engage with a nut. A short guide to metric nuts and bolts answers to the most frequently asked questions standard and fine pitch th reads how to identify nut and bolt strength grades how nut and bolt strength grades compare maximum tightening torques why specifi ed torque is sometimes lower than the maximum spanner sizes versus bolt nut thread size. Here is a gallery showing 12 standard types of bolts. Types of bolts designing buildings wiki share your construction industry knowledge. Types of nuts nut typesthis site has many useful charts illustrating fasteners and their uses. Self locking bolt and nut set sm lsnum6x12 a4 71981 self locking bolt and nut set sm lsnum6x12 pg 72750 self locking bolt and nut set sm lsnum6x20 a4 71982. This type permits the parts to be readily disconnected without damaging the fastener, e.
Acorn acorn nuts are a high crown type of cap nut, used for appearance. Knowing the names and the specific types of screws, bolts, washers, or nuts you will need for your current or future diy project is very important. It works best for applications where very little of the bolt is exposed, or where the cap nut doesnt need to screw down fully along the length of the bolt s shaft. Type description a4 a4 kg sm henum10x 72950 sm henum10x140 72951 sm henum10x150 72952 nuts, bolts and fasteners nuts, bolts and fasteners. Following are the most commonly used types of bolts, used in various applications and sectors. Bolts are measured in many different types of parameters. A bolt is a threaded fastener which is always coupled with a nut. The defining distinction, per machinerys handbook, is in their intended purpose. Bolts with a hexagonal head with threads for use with a nut or tapped hole. Feb 22, 2018 types of bolts and their uses head shapes. Heavy hex a heavier pattern version of a standard hex nut.
Structural bolting astm f3125f3125m is a structural bolt specification covering inch and metric bolt grades. Types of bolts carriage bolt eye bolt hex bolt lag bolt machine bolt flat topped machine oval sheet metal bolt self drilling sheet metal bolt flat top socket bolt round slotted wood screw screw slotted 3. Dec 06, 2016 types of bolts carriage bolt eye bolt hex bolt lag bolt machine bolt flat topped machine oval sheet metal bolt self drilling sheet metal bolt flat top socket bolt round slotted wood screw screw slotted 3. A bolt comprises of a head, cylindrical body and threads along its length. Bolts, nuts, hex head bolt nut, heavy hex bolt nut, fastener. Nuts are almost always used in conjunction with a mating bolt to fasten multiple parts together. Self locking bolt and nut set sm lsnum6x12 a4 71981 self locking bolt and nut set sm lsnum6x12 pg 72750 self locking bolt and nut set s.
Jbolts shoulder bolts j shaped bolts are used for tiedowns or as an open eye. Types of bolts and their uses the nuts and bolts blog. The nuts and bolts behind engineering srjc, engr45, 2012. These classifications all play a role in the final selection of a bolt type for a certain application. Types of nuts nut types this site has many useful charts illustrating fasteners and their uses. Though they may sound similar, they are very different coatings. The cylindrical portion of the bolt is known as the shank. The shape of the head is depended upon the purpose for which bolt is required. These screws are beneficial for use in public places that might fall victim to theft, like public restrooms, where expensive fixtures can be tempting for some. Bolt head on one end, threads on other end, used with a nut stud rod threaded at both ends cap screw head on one end, threads on other end, not used with a nut machine screw similar to cap screw but smaller set screw used to prevent 2 rotating parts from moving separately.
Nuts, bolts and fasteners 228 suitable for connecting description material article no. Always consult the manufacturers instructions or engineering recommendations when making bolted connections. Jun 11, 2015 nylon insert jam lock a nylock nut with a reduced height. The maximum major diameter is indirectly specified using other parameters that. Understanding nut and bolt specifications, version1. In applications where vibration or rotation may work. Bolts are for the assembly of two unthreaded components, with the aid of a nut.
Wood screws have large threads and a smooth shank f or pulling two pieces of material together. Cheat guide chart bolts, screws, washers, nuts, drive. A gallery of 12 common bolt types by definition, bolts are threaded fasteners that are intended to be mated with a nut. Hex tap bolts, hex cap screws, trim head hex cap screws, and hex serrated flange bolts fall under this category.
The nut styles range from hexagonal heads, regular square nuts, machine screw nuts, thumb nuts, nylong insert stop, cap nuts and other style types. A bolt is a type of fastener, usually made from metal, that commonly comprises a head at one end, a chamfer at the other, and a shaft characterised by an external helical ridge known as a thread. Students will also be taught how to drill a hole and tap a thread into. Wood screw anchors this anchor is made of lead and can be used with wood screws or sheet metal screws. Anchor bolts bolt types standard bolt size hex bolts. Certain types are some times referred to as stove bolts. Find highquality nut bolt stock photos and editorial news pictures from getty images. These heads are made in order to grip the tools that are used to tighten them. The size most commonly associated with screw threads is the nominal diameter. A machine screw is a screw or bolt with a flat point. We have the charts to help you identify the many different types of bolts and screws for just about any project. An acorn nuts has roughly the same design as a cap nut, except that its rounded end has a.
Identification charts for different types of fasteners. Bolt, nut, and washer identification guide hot rod an identification guide of the most common and uncommon bolt, nut, and washer types on the market. Custom bolt tightening solutions we aim to provide special tensioner solutions within one week of receiving the enquiry. Fastener type chart bolt depot nuts and bolts, screws.
A bolt is a type of threaded hardware fastener that is used to position two workpieces in specific relation to each other. Fastener basics bolt depot nuts and bolts, screws and. Determine the maximum torque according to bolt nut size and grade. I suggest you buy every one of them you can find craigslist, ebay, garage sales, bike shops, camping stores, marine equipment dealers and start taking them apart.
Used for light duty anchoring in drywall or other hollow walls. Custom bolt tightening solutions standard product bolt tightening solutions we are very aware that there are many diverse and specialised types of bolted joints being used throughout the industrialised world. It works best for applications where very little of the bolt is exposed, or where the cap nut doesnt need to screw down fully along the length of the bolts shaft. Oct 02, 2018 a bolt is a threaded fastener which is always coupled with a nut.
The earliest bolt heads in use were the square heads. Nylon insert lock a nut with a nylon insert to prevent backing off. Cap a nut with a domed top over the end of the fastener. They share a hexagonal head and are driven with a wrench. Download premium images you cant get anywhere else. Since the terms bolt and screw were in use before the advent of easilyproduced helix. The two types of coating on astm a325 bolting assemblies are hotdip galvanized and mechanical galvanized.
What types of screws, nuts, washers and bolts are used in. Bolts are generally have the flat head which means there is no grove on the head. Bolts belong to the family of threaded fasteners and are paired with a threaded nut when in use, usually to join two or more components together. Chart of nut, bolt and screw types screws, bolts, nut bolt. This includes the head, length and more, however, the bolt thread is often the hardest to measure. If the nuts minor diameter exceeds the maximum, it might not engage enough thread and the bolt may pull out of the nut when under axial load. Bolts have external male thread and nuts have internal male thread. Wrench openings for square and hex bolts and screws 32 to 33 heavy hex bolts 34 heavy hex structural bolts 35 highstrength structural bolting 36 carriage bolts and lag bolts 37 square bolts 38 step bolts and countersunk head elevator bolts 39 nuts finished and heavy hex nuts 41 hexagon machine screw nuts 42 type a forged wing nuts 4. When this type of fastener is used, the parts will never be. Different types of bolts are available online, so as to fit into various industry requirements. Anchor bolts are used to fasten various kinds of objects or structures to concrete. Bolts are classified into different types according to their distinct head shapes, strengths, finishes and materials. Bolts are typically used to hold materials or objects together, or to position objects.
456 276 954 1036 266 1139 113 936 1667 493 1635 336 681 231 282 232 81 1023 495 1303 106 22 1110 881 1348 554 971 944 1539 1151 90 1094 524 910 1149 1353 1067 419 669 168 1102 1167