H9102 metric handbook table of contents chapter 1 general information and guidance a. We carry a large range of industrial hardware in a variety of grades and plating choices. Standard industry practice for calculating torque for a fastener assembly is to use the formula torque clamp load x diameter x friction factor 12 tpxdxk12 the desired clamp load is usually based on 75% of the yield strength or proof load strength of the threaded fastener used. Use them size for size and there are fewer holes to drill and tap and fewer screws to buy and handle. Fastener center is a fastener distributor located in woodstock ontario for 10 years now. Different standards are the responsibility of various organizations and are not always identical. Unfortunately, there are currently three similar, yet slightly different metric fastener standard systems in use.
Metric screw thread chart metric tap size tap drill inches clearance drill inches m1. The dimensions for the various standard pitches are given in table 1. Maryland metrics metric fastener technical information and. Should you find any errors omissions broken links, please let us know feedback. Metric hex bolt diameters and thread pitches mm 10 20 30 40 50 60 70 80 90 100 110 120 140 150 160 170 180 190 200 210 220. Technical specification for metric hexagonal bolts. The standard metric fastener thread series for general purpose. For example, a bolt and nut may be described as being. These toscale layover charts let you quickly identify dimensions by simply. With the use of innovative technologies, atlanta rod has developed some of the most far reaching and versatile forging capabilities in the industry. Iso metric screw threads are designated by basic diameter and thread pitch. The following type tests are required to be supplied with the tender documents.
Different standards are the responsibility of various organizations and are. Stop searching and digging for fastener technical data in books. The following sizes metric din 980 all metal prevailing torque type hex lock nut are available for immediate. A joint requiring twelve 8 grade 5 hex heads would need only 7 unbrako socket head cap screws. Machine screws with a thread cutting self tapping point. Corporate headquarters 9403 104th street ozone park, ny 11416. Mechanical drawing mdp 115 firstyear, mechanical engineering dept. Din 7985 cross recessed phillips raised cheese head pan head machine screws can be used for many.
Sae fastener standards manual 2009 edition r sae j1061 feb2008 surface discontinuities on general application bolts, screws, and studs sae j1102 feb1995 mechanical and material requirements for wheel bolts sae j1102m mar2001 mechanical and material requirements for metric wheel bolts. Metric din 7985 cross recessed phillips pan head machine. Din 933 1987 this standard contains specifications for fully threaded hexagon head screws with coarse metric thread for diameters m 1. Technical information metric thread pitch table metric pitch table metric diameter pitch mm coarse standard fine standard 3mm 0. The following sizes of metric din 7985 cross recessed phillips raised cheese head pan head machine screws are available for immediate shipping from stock. The new look unbrako fastener selector guide has been launched on ios and android. So you can open them in whatever version of cad software you have. Our parts are shipped from multiple locations across the us and shipped as quickly as. Astm a325 structural bolts are designed for steel to steel connections.
This property class designation conveys most of the relevant necessary information about the fastener due to the design of the metric marking system. Fastener mart offers a wide range of fastener technical datafrom our understanding fastener series of articles, which will introduce you to a variety of fastener and hardware topics and productsto our fastener fasten facts, handy fastener reference data and reference chartsto advanced fastener reference materials in the form of fastener books. The standard metric fastener thread series for general purpose threaded components is the m thread profile and the coarse pitch thread series. Metric external table chart thread sizes m 80 m 100. Like inch fastener descriptions, the thread parameter of metric fastener descriptions comes after the thread diameter. The following table chart defines standard metric external thread size m1. The size most commonly associated with screw threads is the nominal diameter. Metric external table chart thread sizes m 56 m 78. Metric din 94 split pins cotter pins aspen fasteners. The selector guide provides easy to access product details, part number references and dimensional and seating torque values for standard applications. The following are to links of iso metric hardware specifications table charts.
External metric thread table chart and fastener sizes m1. We manufacture nonstandard and specialty large diameter nuts and bolts. Check out our fastener reference guides, which includes dimensions and technical specs for our most popular fasteners. Bolt thread size chart pdf for a chart of fastener grades, head markings and mechanical properties, see. Rather than being stamped with f593cd or f593gh astm specifications for inch series stainless bolts, metric bolts will have a metric property class designation stamped on the head. Proof loads and tensile stress metric hexagon bolts. Iso metric hardware specifications table chart engineers edge. Metric din 980v all metal prevailing torque type hex lock nuts. Screws come in a wide variety of shapes and sizes, so thread callouts are used to help identify them.
Screw thread definitions 3 types of thread 4 manufacturing screw threads 5 drawing screw threads 6 unified threads 7 metric threads 8 drawing bolts 9 bolt and screw clearances 3. Metric din 94 split pins cotter pins are common used fasteners that hold assemblies together. When referring to standards and specifications, we will use only the. Metric external fasteners thread and fastener sizes m180 m255 metric external fasteners thread and fastener sizes m260 m1060 metric internal fasteners thread designations sizes m0. Because they are used in such a specific application, they have dimensional characteristics that are unique and limited compared to most other fastener grades. The metric coarse thread is interchangeable with all other coarsethreaded metric fasteners as listed in this catalog. Metric thread calculator to calculate external and internal metric thread dimensions including major diameter, minor diameter, pitch diameter and thread tolerance according to iso 724 and iso 965 standards. Iso metric hardware specifications table chart engineers. Technical questions about fasteners our knowledge of the industry standards, fastener technology, and fastener materials ensures an accurate and timely response to virtually any fastener related question. Thread pitch diameter, major diameter and minor diameter for m profile external threads are given.
If you still have questions, or need a special order, please feel free to contact us and speak with any of our fastener experts. Iso fastener standards should be referenced for all metric fasteners metric fasteners are used throughout the world to assemble most products that are traded internationally. Iso 724 metric threads dimensions of metric threads according iso 724. Basicdimensions metric multistandard components corp. A metric machine screw is a straight shank fastener with a metric thread pitch designed to go through a hole or nut that is pre. Requirements l axis of screw thread basic major diameter minor diameter basic pitch diameter l description a metric machine screw is a straight shank fastener with a metric thread pitch designed to go through a hole or nut that is pre. Our knowledge of the industry standards, fastener technology, and fastener materials ensures an accurate and timely response to virtually any fastener related question. Made of soft metal wire looped on itself so the two resulting tines can be inserted into a predrilled hole and bent to keep it in place. Metric external thread dimensions are given in the external thread chart below according to asme b1. Dimensions of slotted flat countersunk head machine screws nominal size or. Internal thread dimensions for metric coarse pitch screw.
If you cant open these pdf files directly in your browser, you can use a pdf viewer, such as adobe. A metric machine screw is a straight shank fastener with a metric thread pitch designed to go through a hole or nut that is pretapped to form a mating. Torsional strength metric socket set screws of a sufficient length to be tested as listed in the above table shall withstand application of the test torque specified in said table without evidence of the socket reaming or the screw bursting. Using fewer socket screws of the same size can achieve the same clamping force in the joint. A fastener, which reduces the big 85, will lower assembly costs far more effectively than buying a cheaper fastener. Metric external table chart thread sizes m 105 m 5. A helpful guide with lag screws dimensions, tolerance on length, and performance and mechanical specs. Inches metric versus imperial equivalent screw dimensions. Most blocks are on layer 0, byblock or bylayer and insert at 0,0,0.
Metric dimensions are in parentheses and are in millimeters unless otherwise noted. Chart 2b shows the same relationship with a metric thread. Fastener and screw bolt design, formula and calculations. Maryland metrics metric fastener technical information and data index if you do not have the proper minimum version 5. Metric thread specifications always begin with thread series designation for example m or mj. This clause specifies the basic profile for iso general purpose metric screw threads as shown in figure 1. Fastener superstore offers a simple to use online catalog of more than 35,000 screws, bolts, rivets, spacers, standoffs and other fasteners. Metric system of diameters, pitches, and toleranceallowances. A handy reference guide defining various fastener thread terms and classes of thread. These thread sizes and classes represent bolts and screws, as well, as other standard external threads.
Slotted and cross recessed screws with metric thread. Whether your requirements are for metric or imperial measures we can supply your needs. Socket head cap screws 51 button head and flat head socket cap screws 52 socket set screws 53 hexagon keys and bits 54 socket head shoulder screws, dowel pins, and slotted set screws 55 square head set screws and socket pipe plugs 56 physical properties of sockets 56 point terminology 57 flange 12point screws 58 to 59 taper pins 510 threaded taper pins 511. This includes stock sizes available in the market place, length tolerances, short thread lengths, and the actual head dimensions are the same.
The actual fastener makes up only 15% of assembly costs. This app is a must have for anyone working with our fasteners. Machine screws form a fastening superior in strength to spaced thread. Metric threads 8 drawing bolts 9 bolt and screw clearances. The printable fastener tools series also includes general charts and tools for identifying and measuring fasteners, including a ruler and thread gauge. These free files are mostly saved in an autocad 2000 dwg format. Cotter pins are typically made of soft metal allowing for easy installation and removal. Iso metric hexagon nuts, including thin nuts, slotted nuts and. Metric thread specifications always begin with thread series designation for example m or mj, followed by the fasteners nominal diameter and thread pitch both in units of millimeters separated by the symbol x. Basic fastener types a bolt is a device with a head on one end of a. Modern industrial fasteners are manufactured to a variety of standards covering dimensions, tolerances, materials, mechanical properties, testing procedures, etc. Fastener reference tables conversions, hardness, thread pitch, tensile strength the tables below are provided as a general guide to help you better understand metric and imperial measurements. For example, m10 or m106g, by default, specifies m10 x 1. A simple 10 second pull down menu query provides all technical information related to any given fastener including dimensions, mechanical properties, finish data, and tightening information in a single sheet which can be printed out as a.
Fastener categories fastener type chart wood screws machine screws thread cutting machine screws sheet metal screws self drilling sms screws with a smooth shank and tapered point for use in wood. Metric thread pitches metric thread diameters note. There are two calculation options available, general engineering use or custom use. Metric external table chart thread sizes m 20 m 55. The taptite thread rolling screw family has been reducing the big 85 in automotive, white goods, lawn. Machine screws are externally threaded fasteners designed to be mated with threaded nuts or tapped holes in the parts they are designed to hold together. The use of metric fasteners in the worldwide market has led to the creation of many standards. Metric bolts minimum ultimate tensile and proof loads minimum ultimate tensile and proof loads for metric bolts with coarse or fine threads. Plating metric socket set screws are usually supplied with a thermal black finish. Screws with threads for use with a nut or tapped hole. A trilobular thread forming screw with a machine screws thread pitch. Metric threads are defined in the standards document iso 9651.
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