Sthe following table chart are standard metric external thread sizes m 0. 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. A short guide to metric nuts and bolts dd thomson engineering. Diameterdecimalmetric chart for small diameter fasteners. The chart below shows metric bolt conversions and din numbers for fasteners. Bolt depot fastener information terminology, measurement. Tolerances for metric fasteners the tolerances in the tables below are derived from iso standard. Whether your requirements are for metric or imperial measures we can supply your needs. A325m and a490m for bolts, a563m for nuts, f436m for washers and f959m for direct tension indicators. For example a 38 inch nut fits a 38 inch bolt and a 38 inch washer fits the same bolt. Mfcs facility thread types size volume materials processes mundelein, il internal clinchlok nuts steplok nuts washers prevailing torque nuts. The callout will look like a string of several numbers. The content of the third edition published in 2002, which this edition supersedes, has been comprehensively revised and updated.
The specifications listed above specify available nominal fastener sizes that can be produced. Coarse pitch threads are preferred and should be used whenever possible, as stated in asme b1. As a leader in the providing metric fasteners for the aerospace industry, offers a broad range of top quality fasteners for aerospace applications. Whether or not using our 300 series fasteners in aluminum panel is acceptable depends on the specifics of the application. Corporate headquarters 9403 104th street ozone park, ny 11416. If referring to internal thread tolerance, the g would be. Hex bolts, or hex cap screws, are used in machinery and construction. Please feel free to print these charts and tables for your personal reference on fasteners. Metric fastener thread series m is the common thread profile. The jis japanese industrial standards sizes range from 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. Metric hex nut dimensions sizes chart according to iso 4032.
For example, a metric screw callout looks something like m12 x 1. Iso metric screw threads are designated by basic diameter and thread pitch. 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. 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. The desired result is a clamping force to hold components together. Notes product grade a applies to sizes up to m24 and length not exceeding 10 x diameter or 150 mm, whatever is shorter. Fastener tech data understanding series introduction. Apr 08, 2016 machinist and manufacturing reference book fastener black book. It introduces the topics of common metric thread types, fastener designation, and property class. You may search for your product based on diameter by selecting a measurement on the size dropdown.
A hex bolt with metric thread pitch made from medium carbon steel and heattreated. Thread series mj designates the external thread has an increased. We use state of the art technology and have national cold header. Our 2page, illustrated guide to basic fastener concepts designed to quickly give you the knowledge to identify, find and use the correct fastener. It does not mention outgassing problems caused by the relatively high vapor pressure of these metals. Iso 4759 the tables show tolerances on the most common metric fasteners. Free charts and tools in pdf format, including full size lay.
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. Looking for grainger approved fastener black book 4kyx8. Metric bolt conversion data for industrial boltsrods, machine screws and small diameter fasteners from elgin fastener group includes metric to standard bolt conversions. We carry a large range of industrial hardware in a variety of grades and plating choices. They are now used around the world to assemble internationally traded goods.
Barrett march 1990 the manual describes various platings that may be used for corrosion control including cadmium and zinc plating. The widthacrossflats is 1mm larger for din than for ansi or iso in these three sizes. We also manufacture standard fasteners ranging in thread sizes from. For a given diameter, a fastener may be available in coarse standard. Standards for dimensions and tolerances are issued by the american national. Nucor cap screws are designed to hit the dimensions of all three specification series except for m10, m12, and m14 products. Fastener center is a fastener distributor located in woodstock ontario for 10 years now. Printable fastener tools series fastener categories 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.
Standard external metric thread and fastener sizes m 0. Unless otherwise shown in the contract documents, appropriate. Abbreviated ws screws with threads for use with a nut or tapped hole. Nucor structural bolts are formed on precision high speed cold formers, utilizing inprocess. The size of a metric screw or bolt is specified as diameter, pitch and length, in millimeters millimeters is abbreviated mm.
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. The first edition of the manual of fastening technology was published in 1987. Width across flats wrench size and corners, nut height thickness and thread pitch dimensions are given for nut sizes between m1. A designers guide to the specification of fasteners. External metric thread table chart and fastener sizes m1. If youre using a blueprint or another source of information, the label may also be there. Nucor fastener nucor fastener is a leading manufacturer of structural bolts in diameters ranging from 12 to 114 and metric equivalents. The iso standards are widely used, and bolt diameters range from 2 to 20mm in three varieties of metric thread pitch. Engineering fundamentals of threaded fastener design and. 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.
The fastener manual was intended primarily for aeronautical applica. There is an exception thoughif pitch isnt specified, the fastener is coarse. Both nuts and washers are sized by the fastener they fit. 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. 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. Metric millimeter bolt and nut substitutions will be allowed in accordance with these tables. These thread sizes and classes represent bolts and screws, as well, as other standard external threads. The manual of fastening technology technology 5 edition. External metric iso thread table chart sizes m20 m55. Metric structural fastener assembly components are produced under the following astm specifications. The following are metric external thread size table chart for sizes m20 to m55 per.
All dimensions listed in this section are given in millimeters mm unless otherwise noted. Guide to fastener sizes, measurements screws, nuts, bolts. Engineering fundamentals of threaded fastener design and analysis. To avoid confusion, we always include the thread pitch for. With access to over 52 materials, and numerous manufacturers, we can help you locate any hardtofind fastener quickly and efficiently. Thus, countersunk fasteners are measured overall and noncountersunk fasteners are measured from under the head. Hole sizes 124 thumb and wing screws 125 to 127 b7 studs and nuts stud bolts for pressuretemperature piping 21 general purpose endtoend studs 22 tap end stud bolts 23 double end stud bolts 24 bolts hex cap screws finished hex bolts 31 wrench openings for square and hex bolts and screws 32 to 33. A further standard, almost identical to jis is the german din deutsches institut far normung.
The widthacrossflats is 1mm larger for din than for ansi or. Fastenal uses cookies to improve website user experience. The standard metric fastener thread series for general purpose threaded components is the m thread profile and the coarse pitch thread series. 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. The approved north american style, metric, slotted and phillips pan head machine screw fully meets the specifications of ifi 5, 1982. However, occasionally some slight modifications are made. Fastener conversion approximate equivalency common din numbers. All data is correct to the best of our knowledge, however tr cannot be held responsible for any errors or omissions.
Fastener and screw bolt design, formula and calculations. Our application engineering team is always standing by to offer expert advice should you require any further support. The following table of thread sizes for coarse and fine pitch thread was created using the standard sizes from asme b1. The iso metric fastener standards started development about 40 years ago. 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.
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. We stock many specialty aircraft bushings, bolts, nuts and other mil spec fasteners from the industrys leading manufacturers. 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. Look to the packaging or store label for more information. We use only domestically melted and rolled material and produce the bolts in st. Guide to fastener sizes, measurements screws, nuts. Four zones of the tightening process the most general model of the torque.
Other size measurements, such as screw, bolts, pin length, the outer. 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. Corporate headquarters 923 n lenola rd moorestown, nj 08057. Abbreviated ms machine screws with a thread cutting self tapping point. 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. Fastener black book 1st edition metric fastener black book inch edition. The following table chart defines standard metric external thread size m1. Grade 2 requirements for sizes 14 through 34 in apply only to bolts and screws 6 in. We do not use cookies for the processing, collection, or storage of personal data under any circumstances. When purchasing nuts make sure the threads per inch or thread pitch match that of the bolt. We form the most ingenious solutions for a variety of industries and applications. The electrical black book is a pocket sized reference guide for electrical contractors and electricans.
This section contains tables of sizes for metric thread hardware. Metric boltmetric fasteners used in aerospace applications. M12 x 25 12 mm diameter, coarse thread is assumed 1. The standard metric fastener thread series for general purpose threaded components is the m.
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