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