They are now used around the world to assemble internationally traded goods. Abbreviated ms machine screws with a thread cutting self tapping point. Metric boltmetric fasteners used in aerospace applications. It does not mention outgassing problems caused by the relatively high vapor pressure of these metals. The following table of thread sizes for coarse and fine pitch thread was created using the standard sizes from asme b1. A short guide to metric nuts and bolts dd thomson engineering. Barrett march 1990 the manual describes various platings that may be used for corrosion control including cadmium and zinc plating. The specifications listed above specify available nominal fastener sizes that can be produced. It introduces the topics of common metric thread types, fastener designation, and property class. The content of the third edition published in 2002, which this edition supersedes, has been comprehensively revised and updated. Fastener and screw bolt design, formula and calculations ansi screw and nut threads size chart the following are metric external thread size table chart for sizes m20 to m55 per. Iso metric screw threads are designated by basic diameter and thread pitch. The electrical black book is a pocket sized reference guide for electrical contractors and electricans. We use only domestically melted and rolled material and produce the bolts in st.
The process of tightening a fastener involves turning, advance of the lead screw, and torque, turning moment, so that preload, tension, is produced in the fastener. It is time to move all metric fastener designs and requirements to the adoption of iso fastener standard and abandon most, if not all, of the asme, astm, sae, and din metric fastener standards. 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 in 230 1 2 3 4 5 6 7 8 9 copyright. Coarse pitch threads are preferred and should be used whenever possible, as stated in asme b1.
A designers guide to the specification of fasteners contents page introduction of sfs intec 3 introduction to the principal functions of fasteners 6 section 1 durability 7 1. To avoid confusion, we always include the thread pitch for. Tolerances for metric fasteners the tolerances in the tables below are derived from iso standard. The size of a metric screw or bolt is specified as diameter, pitch and length, in millimeters millimeters is abbreviated mm. Corporate headquarters 923 n lenola rd moorestown, nj 08057. Looking for grainger approved fastener black book 4kyx8. Standard external metric thread and fastener sizes m 0. Metric fastener tips for the mitsubishi 3000gt and dodge stealth by jeff lucius introduction this short note discusses how to identify the metric bolt or screw used on your mitsubishi 3000gt and dodge stealth. The iso standards are widely used, and bolt diameters range from 2 to 20mm in three varieties of metric thread pitch. Both nuts and washers are sized by the fastener they fit. The callout will look like a string of several numbers. If you would like to prevent our website from using cookies or remove existing ones, you will need to adjust the cookies settings in your browser. We do not use cookies for the processing, collection, or storage of personal data under any circumstances. Metric fastener chart we manufacture metric socket cap screws in socket heads din 912, button heads din 7380, flat heads din 791, partial threads and full threads.
Standards for dimensions and tolerances are issued by the american national. Nucor structural bolts are formed on precision high speed cold formers, utilizing inprocess. Hex bolts, or hex cap screws, are used in machinery and construction. Thread series mj designates the external thread has an increased. If referring to internal thread tolerance, the g would be. The widthacrossflats is 1mm larger for din than for ansi or iso in these three sizes. Metric hex nut dimensions sizes chart according to iso 4032. Mfcs facility thread types size volume materials processes mundelein, il internal clinchlok nuts steplok nuts washers prevailing torque nuts. A further standard, almost identical to jis is the german din deutsches institut far normung. Engineering fundamentals of threaded fastener design and analysis. 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.
External metric thread table chart and fastener sizes m1. We carry a large range of industrial hardware in a variety of grades and plating choices. Notes product grade a applies to sizes up to m24 and length not exceeding 10 x diameter or 150 mm, whatever is shorter. As a leader in the providing metric fasteners for the aerospace industry, offers a broad range of top quality fasteners for aerospace applications. Iso 4759 the tables show tolerances on the most common metric fasteners. Metric bolt conversion data for industrial boltsrods, machine screws and small diameter fasteners from elgin fastener group includes metric to standard bolt conversions. The fastener manual was intended primarily for aeronautical applica. For example, a metric screw callout looks something like m12 x 1. Metric structural fastener assembly components are produced under the following astm specifications. The standard metric fastener thread series for general purpose threaded components is the m thread profile and the coarse pitch thread series. All dimensions listed in this section are given in millimeters mm unless otherwise noted. Unless otherwise shown in the contract documents, appropriate. External metric iso thread table chart sizes m20 m55. M12 x 25 12 mm diameter, coarse thread is assumed 1.
Fastener length is usually measured from where the material is assumed to be to the end of the fastener. Technical specifications guide for fasteners fastrite. Grade 2 requirements for sizes 14 through 34 in apply only to bolts and screws 6 in. We use state of the art technology and have national cold header. Nucor cap screws are designed to hit the dimensions of all three specification series except for m10, m12, and m14 products. We also manufacture standard fasteners ranging in thread sizes from. The following are metric external thread size table chart for sizes m20 to m55 per. You may search for your product based on diameter by selecting a measurement on the size dropdown.
With access to over 52 materials, and numerous manufacturers, we can help you locate any hardtofind fastener quickly and efficiently. Whether or not using our 300 series fasteners in aluminum panel is acceptable depends on the specifics of the application. Fastener center is a fastener distributor located in woodstock ontario for 10 years now. The first edition of the manual of fastening technology was published in 1987. Please feel free to print these charts and tables for your personal reference on fasteners. There is an exception thoughif pitch isnt specified, the fastener is coarse. The widthacrossflats is 1mm larger for din than for ansi or. A hex bolt with metric thread pitch made from medium carbon steel and heattreated. Free charts and tools in pdf format, including full size lay. Bolt depot fastener information terminology, measurement. Fastener and screw bolt design, formula and calculations. Lang fastener corporation has cold heading and thread rolling equipment capable of manufacturing metric fasteners range from thread sizes of 5mm to 18mm, and up to 150 mm long. Metric fastener thread series m is the common thread profile.
Abbreviated ws screws with threads for use with a nut or tapped hole. Diameterdecimalmetric chart for small diameter fasteners. Nucor fastener nucor fastener is a leading manufacturer of structural bolts in diameters ranging from 12 to 114 and metric equivalents. Width across flats wrench size and corners, nut height thickness and thread pitch dimensions are given for nut sizes between m1. For example a 38 inch nut fits a 38 inch bolt and a 38 inch washer fits the same bolt. Fastenal uses cookies to improve website user experience. Look to the packaging or store label for more information. All of our metric socket screws can be manufactured in alloy steel, stainless steel, aluminim and with a variety of finshes such as anodized aluminum or black oxide.
Guide to fastener sizes, measurements screws, nuts, bolts. Our 2page, illustrated guide to basic fastener concepts designed to quickly give you the knowledge to identify, find and use the correct fastener. Fastener black book 1st edition metric fastener black book inch edition. Our application engineering team is always standing by to offer expert advice should you require any further support. If youre using a blueprint or another source of information, the label may also be there. We stock many specialty aircraft bushings, bolts, nuts and other mil spec fasteners from the industrys leading manufacturers. Other size measurements, such as screw, bolts, pin length, the outer. The iso metric fastener standards started development about 40 years ago. These thread sizes and classes represent bolts and screws, as well, as other standard external threads. Metric millimeter bolt and nut substitutions will be allowed in accordance with these tables. We form the most ingenious solutions for a variety of industries and applications. For metric bolts strength is according iso 898 mechanical properties of fasteners made of carbon steel and alloy steel described by property classes with designations 4. Apr 08, 2016 machinist and manufacturing reference book fastener black book. Thus, countersunk fasteners are measured overall and noncountersunk fasteners are measured from under the head.
The approved north american style, metric, slotted and phillips pan head machine screw fully meets the specifications of ifi 5, 1982. For a given diameter, a fastener may be available in coarse standard. Fastener conversion approximate equivalency common din numbers. Service manual supplement july 2016 fastener torque specifications 4 sae and metric fastener torque specifications sae plain and zinc plated hex and socket head cap. The manual of fastening technology technology 5 edition. The desired result is a clamping force to hold components together. This section contains tables of sizes for metric thread hardware. Sthe following table chart are standard metric external thread sizes m 0. When purchasing nuts make sure the threads per inch or thread pitch match that of the bolt.
However, occasionally some slight modifications are made. A designers guide to the specification of fasteners. Four zones of the tightening process the most general model of the torque. Whether your requirements are for metric or imperial measures we can supply your needs. All data is correct to the best of our knowledge, however tr cannot be held responsible for any errors or omissions.
Corporate headquarters 9403 104th street ozone park, ny 11416. This is a question that comes up on a regular basis because passive 300 series stainless steel and aluminum are some distance apart in a galvanic series and there is the potential for galvanic corrosion if an electrolyte is present. The following table chart defines standard metric external thread size m1. Fastener tech data understanding series introduction. Guide to fastener sizes, measurements screws, nuts. The chart below shows metric bolt conversions and din numbers for fasteners.
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