Types of nut and bolt pdf

Helical spring washers or lock washers are normally made from tough spring steel and installed under the bolt or nut. This is perhaps the least commonly used of the bolt tightening methods on our list, and typically only used for extremely large bolts. These nuts have different functions in the fastener industry. Standard bolt size is measured from the surface of the material to its end. Hex tap bolts, hex cap screws, trim head hex cap screws, and hex serrated flange bolts fall under this category. A nylon insert lock, or nylock, is a hex nut with a nylon insert that helps to hold it securely in place. Abbreviated hhmb or lvanized nuts and washers will fit galvanized bolts. It is imperative to have the required knowledge to choose the correct bolt type for a specific job at hand, as there are various styles of bolts that are more effective than others. This method employs a hydraulic ram placed over the nut and a threaded puller which attaches to the ram. 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. Nut types pdf print format this chart shows the different styles of nuts used in the manufacturing industry. Bolts are measured in many different types of parameters. Fully threaded hex bolts are also known as tap bolts.

Identification charts for different types of fasteners. The defining distinction, per machinerys handbook, is in their intended purpose. Types of bolts, nuts, and washers a complete guide on fasteners all fasteners perform the same functionmechanically joining and securing two or more parts together. What types of screws, nuts, washers and bolts are used in. Since the terms bolt and screw were in use before the advent of easilyproduced helix fasteners, they are often synonymous. Standard bolt identification markings identification grade mark specification fastener description material nominal size range in. 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.

This includes the head, length and more, however, the bolt thread is often the hardest to measure. Bolts come in several configurations for their application and specification variances. In as early as the 1400s, leonard davinci and luc besson had designs of bolts. Cutting requires a blank rod that is the exact diameter as the bolt specification, and excess material is cut away from the blank to create threads. Specification for structural joints using highstrength bolts. Matchmarksare placed on each nut, bolt, and steel surface in a straightline 3. Identification chart for types of fasteners bolt and screw wood screws, machine screws, thread cutting machine screws, sheet metal screws, self drilling sms, hex bolts, carriage bolts, lag bolts, socket screws, set screws, eye bolts, eye lags, jbolts, ubolts, shoulder bolts, elevator bolts, sex bolts, mating screws and hanger bolts. An acorn nuts has roughly the same design as a cap nut, except that its rounded end has a higher crown. The part not turned by the wrench is prevented from turning 4.

Also known as a keps nut, a knut or a washer nut, a kepsk lock nut has an attached free spinning lock washer. They share a hexagonal head and are driven with a wrench. Also known as a keps nut, a k nut or a washer nut, a kepsk lock nut has an attached free spinning lock washer. Oct 02, 2018 a bolt comprises of a head, cylindrical body and threads along its length. This technical information is supplied as a courtesy.

A basic hex nut has six sides and is also called a finished hex nut. Sep 23, 2015 a gallery of 12 common bolt types by definition, bolts are threaded fasteners that are intended to be mated with a nut. Nylon insert jam lock a nylock nut with a reduced height. For standard size bolts where the head usually sits above the surface, the measurement is from directly under the. When this type of fastener is used, the parts will never be. This chart illustrates the different style nuts used in the industry. The cylindrical portion of the bolt is known as the shank.

Bolts with a hexagonal head with threads for use with a nut or tapped hole. Bolt and nut types pdf a sheet metal screw with a self drilling point. The distinction between a bolt and a screw is commonly misunderstood. Smaller than a hex jam or hex finish nut, they are used with machine screws under 14 diameter. Using the proper specific bolt type is very critical when working on a wood or metal project. These nutss may have different thread counts for the different types of bolts. There are 1,211 suppliers who sells types of nuts bolts on, mainly located in asia. Tolerances for the turnof nut method were adjusted. Acorn acorn nuts are a high crown type of cap nut,used for appearance. Bolts are classified into different types according to their distinct head shapes, strengths, finishes and materials. Try to criticize each design along the way so your hand pump doesnt suffer. 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. Metric fastener threads are also specified according to thread pitch, which is the distance between adjacent threads, again in millimeters.

Nuts are available in a variety of shapes, sizes, materials, and thread patterns. The shank is threaded at the tail end for a sufficient length so as to effectively engage with a nut. Types of bolts designing buildings wiki share your construction industry knowledge. All standard bolt sizes and thread types can be manufactured via cutting. Allpro threaded neither employs nor maintains an engineering or technica l staff, and allpro is merely supplying certain. Unified finethread series unf or unrf use when more threads per inch are required i. Bolts are generally have the flat head which means there is no grove on the head. It generally has the design on its periphery to get driven by the wrench tool and same goes for the nut.

Cheat guide chart bolts, screws, washers, nuts, drive charts working on a project and trying to find the name of a special bolt type. To ensure rapid prototyping, we stock blanks in different styles and sizes, including socket head cap screws. Here is a gallery showing 12 standard types of bolts. Cheat guide chart bolts, screws, washers, nuts, drive. These bolts are available in various designs, which suitably fit. This tension is then locked in by the latersetting grout cartridges and the resulting installation is a fully tensioned, fully grouted rockbolt. Knowing the names and the specific types of screws, bolts, washers. 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 is a form of threaded fastener with an external male thread. The bolt is tightened with a prescribed rotation pastthe snug.

A machine screw is a screw or bolt with a flat point. Hydraulic nuts are a permanent form of bolt tensioning where the hydraulic nut replaces the conventional hexagon or round nut. Bolts belong to the family of threaded fasteners and are paired with a. The size most commonly associated with screw threads is the nominal diameter. This type permits the parts to be readily disconnected without damaging the fastener, e. 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. Wood screws have large threads and a smooth shank f or pulling two pieces of material together. These types are used to minimize the stress present in the bolts and buts. For example, a bolt and nut may be described as being. A nylon insert jam lock is, accordingly, a shorter nylock. 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.

Hanger bolts hanger bolts have wood thread on one end and machine thread on the other end rivets used to join sheets of metal. 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 43 hex slotted nuts 44 hex and heavy hex jam nuts 45 to 46 hex castle nuts 47 large diameter hexagon head cap nuts 48. Fastener type chart bolt depot nuts and bolts, screws. What is a nut a nut is a type of fastener with a threaded hole.

A cap nut is closed on one end, with a smoothlydomed top. A bolt is a type of threaded hardware fastener that is used to position two workpieces in specific relation to each other. Working on a project and trying to find the name of a special bolt type. In this article, you will learn about the types of nuts and bolts. Nuts are almost always used in conjunction with a mating bolt to fasten multiple parts together. Anchor bolts bolt types standard bolt size hex bolts.

This results in a thicker diameter before the threads start. As it serves as the most common type of nut, several variations exist. Appendix b provisions were incorporated directly into section 5 of the specification. A gallery of 12 common bolt types by definition, bolts are threaded fasteners that are intended to be mated with a nut. Diy tools hand tools nut and bolt storage pvc pipe fittings type chart garage tools garage workshop screws and bolts metal tools bolt depots nice fastener type chart. The threaded section of the bolt should extend past the nut for this method to succeed. With application of hydraulic pressure to the hydraulic nuts, bolt load is generated effortlessly and the user needs. Srjc, engr45, 2012 the nuts and bolts behind engineering. 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. Nuts, bolts and fasteners 228 suitable for connecting description material article no. But neither the external threads of the bolt nor the internal threads of the nut are exactly. Fastener basics bolt depot nuts and bolts, screws and. They can able to spread a clamping force right from the bolt to span slots in order to oversize the holes in the wood.

History of bolts nuts and bolts were invented in as early as the 1 st century, the romans used them to bind windows, secure chariots and build machines. 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. Following are the most commonly used types of bolts, used in various applications and sectors. How to determine bolt thread size bolt threads strength. Bolt, nut, screw, rivet, and washer manufacturing 1997economiccensus manufacturing industryseries 1997 issuednovember1999 ec97m3327c u. The nut styles range from hexagonal heads, regular square nuts, machine screw nuts, thumb nuts, nylong insert stop, cap nuts and other style types. Bolts are for the assembly of two unthreaded components, with the aid of a nut. Anchor bolts are used to fasten various kinds of objects or structures to concrete. However, differences in type, quality, shape, and material significantly influence the fasteners performance and service life. What types of screws, nuts, washers and bolts are used in a. Bolts are typically used to hold materials or objects together, or to position objects. Jun 11, 2015 nylon insert jam lock a nylock nut with a reduced height. This is represented by the last number in a metric bolts designation. Tee a nut designed to be driven into wood to create a threaded hole.

Bolts, nuts, hex head bolt nut, heavy hex bolt nut, fastener. While your selection of a nut is somewhat constrained by your choice of boltparticularly in terms of size and threadingyou still should select the nut head shape and material that is most suitable for your application. Acorn acorn nuts are a high crown type of cap nut, used for appearance. A bolt comprises of a head, cylindrical body and threads along its length. Different types of bolts are available online, so as to fit into various industry requirements. Thread types unified coarse thread series unc or unrc most commonly used in the bulk production of bolts, screws, nuts for general engineering applications. We have the charts to help you identify the many different types of bolts and screws for just about any project. This edition of the councils specification for structural joints using highstrength bolts continues the tradition of earlier editions. Chart of nut, bolt and screw types diy log cabin, screws. Rockbolts and cables 6 30 minutes, the bolt can be tensioned within two or three minutes of installation after the fast anchor resin has set. 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. Types of bolts and their uses the nuts and bolts blog. Cap a nut with a domed top over the end of the fastener. These classifications all play a role in the final selection of a bolt type for a certain application.