Metric screws plain black metric socket head cap screws with coarse thread grade 12. Thread pitch diameter, major diameter and minor diameter for m profile external threads are given. Standard u bolt figure 283 carbon steel figure 283pvc. Determine the diameter of the bolt by looking at the first number. Width across flats width across corners height of head d p ds s e k max. Unbrako standards meet or in many instances, exceed the requirement of the standards listed. Different standards are the responsibility of various organizations and are not always identical. It is intended for advisory purposes only and use of this information is completely voluntary. The figure 283pvc is for support of piping where contact with the pipe is not. Standards for metric bolts are promulgated by the iso, but adopted by individual nations.
Lb is the minimum body length and is the length of the unthreaded cylindrical portion of the shank. Metric bolt size chart stud bolt to nut size chart. Standard ubolt figure 283 carbon steel figure 283pvc. Commercially available hexagonalhead bolts with standard hexagonal.
Technical specification for metric hexagonal bolts, nuts. Metric nuts choose from metric hex, flange and lock nuts with coarse or fine thread. The design principles of iso generalpurpose metric screw threads m series threads are defined in international standard iso 681. The size of a metric screw or bolt is specified as diameter, pitch and length, in millimeters millimeters is abbreviated mm. A table of major diameters and pitches, up to 30 mm in diameter thread classes of fit. For example, a hex cap screw with a 12 thread diameter, threads per i nch, and a 2 length could be listed like this. Width across flats wrench size and corners, nut height thickness and thread pitch dimensions are given for nut sizes between m1. Iso metric threads consist of a symmetric vshaped thread. Iso metric screw threads are designated by basic diameter and thread pitch. Besides using metric measurements, a metric bolt uses the distance between the threads rather than the thread pitch, used in. Metric bolt strengthbolt sizes strengths american bias croberts com very useful section on the consequence of bolt failure fastener design manual. The bolt chart provides both us and metric stud sizes. Apr 24, 2017 many metric bolts denote the use of metric measurements with an m at the start of the bolt designation, such as m9x1.
Choose from our selection of metric bolts, including over 11,300 products in a wide range of styles and sizes. Metric thread pitch table metric pitch table metric diameter pitch mm coarse standard fine standard 3mm 0. They can be created to drawings or customer specification and can be manufactured to order. Socket head cap screws metric body and grip lengths. Lubricated refers to fasteners in the as received condition, which is normally a light preservative oil coating on unplated fasteners and no oil coating on plated fasteners. Using fewer socket screws of the same size can achieve the same clamping force in the joint. M p x d 5000 these formulae may be used for bolts outside the range of the tables, m torque lbf. Metric bolt dimensions atlanta rod and manufacturing atlanta. Browse our products range to view a detailed list of all. For example, m10 or m106g, by default, specifies m10 x 1.
Nominal sizeand thread diameter d depthof w ash erfc c transition dimt da diameterof unthreaded shank ds dia. Metric bolt actual dimensions engineering tools, mechanical. How do i determine the wrench size or hex key size for hex. Metricbolt s roots date back to 1965, when a young technological entrepreneurship has emerged into a successful local business.
Metric screw thread chart metric tap size tap drill inches clearance drill inches m1. Perspicuous metric bolt and spanner size chart pdf bolt size table iso screw chart metric bolt size and pitch chart bolt dimensions metric bolt proof load chart woodworking is one of the most fun crafts around. Shoulder bolts also known as stripper bolts are used to create a pivot point. In this article, im going to share with you some woodworking tips and tricks ive accumulated over t. Hex head lag screw din 571 hex head shoulder bolt, long thread din 609.
Fastener grade us or class metric refers to the mechanical proper ties of. How do i determine the wrench size or hex key size for hex head bolts and socket heads. Standards for metric bolts are promulgated by the iso, but adopted by individual nations dimensions. A joint requiring twelve 8 grade 5 hex heads would need only 7 unbrako socket head cap screws. Engineering ansi hardware design data engineering metric hardware design data. Stocked in a4 316 stainless steel as standard, in a range of lengths and diameters. Uniform distribution of the force on the bolt flanks. If you print out this pdf, make sure you print it at full size. Metric socket head cap screws size table engineers edge. Nonstock items may vary due to variables in methods of manufacture. Fastener tech data understanding series introduction. Metricbolt provides many variations of metric fasteners including metric screws, and metric hex bolts for various applications. Use the dimensions of your bolt to determine the appropriate size nut.
Elevator bolts elevator bolts are often used in conveyor systems. Technical specification for metric hexagonal bolts, nuts, coach screw, and flat washers. Fastener length is measured from where the material surface is assumed to be, to the end. When reading the metric bolts, you will need to know what these three numbers mean for an accurate reading. Supplier of metric nuts, bolts, screws, washers and. Machine screws, sheet metal screws, all thread rod, carriage bolts, lag screws, structural a325 bolts, concrete wedge anchors, b7 studs, tap end studs, double end studs, stainless hose clamps, metric course and ne. Shoulder diameter a thread c thread length d head diameter e head height f allen wrench size. Unless otherwise shown in the contract documents, appropriate. The following sizes of metric din 933 hexagon head cap screws bolts are available for immediate. Metric hex nut dimensions sizes chart according to iso 4032.
Use them size for size and there are fewer holes to drill and tap and fewer screws to buy and handle. Metric bolt dimensions atlanta rod and manufacturing. In metric bolts, strength is described by property classes. Recommended for supporting or anchoring light pipe loads. The nut thickness shall be the overall distance, measured parallel to the axis of nut, from the top of the nut to the bearing surface and shall include the thickness of the washer face where provided. Drilled head metric hexagon socket head cap screws normally are not available in screw sizes smaller than m3 nor larger than m36. Since then the local business has developed considerably, positioning itself as one of the fastest growing companies in our industry. These include a vast range of sizes and types stocked by distributors and manufacturers for an. Sizes not listed can be manufactured within 710 working days. A short guide to metric nuts and bolts answers to the most frequently asked questions standard and fine pitch th reads how to identify nut and bolt strength grades how nut and bolt strength grades compare maximum tightening torques why specifi ed torque is sometimes lower than the maximum spanner sizes versus bolt nut thread size. Buy nicholson hand file, thread restoring, thread teeth, square, metric bolt, 6 length. Shaft diameter the first number associated with metric bolts is the one that is for the actual diameter of the bolt. Hex cap screws manufactured to the dimensional specifications of any one of the listed standards are compatible with nuts manufactured to the metric specification. How to determine bolt thread size bolt threads strength.
A short guide to metric nuts and bolts 2 thomson rail. Metric thread pitch table stainless fasteners bolts. U bolt dimensions range from m6 to m20 in terms of thread diameter, with various lengths and specials also available. U bolts all dimensions in charts and on drawings are in inches. Length is measured from under the head to the end of the bolt note. There are no fewer than 5 different threads for different applicaons and 10 different standard strength grades defined for each size of bolt. Check this is the latest process zone version before use. Nicholson hand file, thread restoring, thread teeth, square. Performance data listed are for standard production items only. This number will be measured in millimeters or centimeters. Besides using metric measurements, a metric bolt uses the distance between the threads rather than the thread pitch, used in american measurements, which is the number of threads per inch. Metric fastener threads are also specified according to thread pitch, which is the distance between adjacent threads, again in millimeters. Fastener technical data and charts section important disclaimer all of the information provided in this section has been assembled with concern for accuracy. Dimensions of slotted flat countersunk head machine screws nominal size or.
The resulting reduced notching effect stops the bolt from turning round and round. Din 933 1987 this standard contains specifications for fully threaded hexagon head screws with coarse metric thread for diameters m 1. The size most commonly associated with screw threads is the nominal diameter. Iso metric hardware specifications table chart engineers. Npt dimensions b a 1 47 effective thread npt size threads per inch a inches b inches 116 27 0. This is represented by the last number in a metric bolt s designation. Us bolts head and wrench sizes hex bolt, lag bolt, square bolt and heavy hex bolt us hex bolts inches ansiasme b18. They were one of the first international standards agreed when the international organization for standardization iso was set up in 1947. The axis of the head shall be located at a true position relative to the axis of the screw shank within a tolerance zone having a diameter equivalent to 6% of the specified maximum head diameter, or the specified maximum width across flats of hex and hex flange heads, regardless of feature size. Basicdimensions metric multistandard components corp. We do not guarantee its completeness or validity and assume no responsibility. Dimensions of cross recessed flat countersunk head machine screws. Metric thread pitches metric thread diameters note. Metric external thread dimensions are given in the external thread chart below according to asme b1.
Hexagon flange bolts din 6921 high tensile pi tchof thread p thread length b coarse pitch bolt. Jbolts shoulder bolts j shaped bolts are used for tiedowns or as an open eye bolt. Metric din 933 hexagon head cap screws bolts full thread. A short guide to metric nuts and bolts dd thomson rail. Supplier and manufacturers fastener and screw bolt design, formula and calculations. Standard metric hex nuts, types styles 1 and 2 per. Metric bolts head and wrench sizes engineering toolbox. To provide users of fasteners with dimensional and. Our standard u bolts are recommended for use as supports or guides for piping. The following are to links of iso metric hardware specifications table charts.
Nominal sizeand thread diameter d dephof flange c tra ns ito diameter da diameterof unthreaded shank ds diameter offlange head dc width across corners e thick. For a chart of fastener grades, head markings and mechanical properties, see. Bolt thread dimensions the following tables list national pipe taper npt dimensions and straight thread dimensions for hex head bolts. Aspen fasteners offers one of the most complete ranges of metric screws, bolts and other inch and metric industrial fasteners for immediate delivery from stock.
Metric fasteners are specified with a thread pitch instead of a thread count. Iso metric profile external bolt thread internal nut thread basic mm size mm thread designation simple thread designation pitch mm class major dia. Each thread is characterized by its major diameter, d d maj in the diagram, and its pitch, p. A table of major diameters and pitches, up to 30 mm in diameter.
The diameter of all bolts is measured as the outside of major. There is an exception thoughif pitch isnt specified, the fastener is coarse threaded. Our metric stud bolt to nut table is meant to help determine the correct size bolt or nut for your purpose. 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. A perfect fit to protect the bolt traditional profile gedore unit drive profile a large contact surface provides a secure force closure even for those bolts whose sizes lie outside of the tolerances. Standard ubolt figure 283 carbon steel figure 283pvc pvc coated figure 283ss stainless steel our standard ubolts are recommended for use as supports or guides for piping. Head sizes may differ from what is shows due to differences between metric standards measure length from under the mm 10 20 30 40 50 60 70 80 90 100. General dimensions of structural bolts as1252 1983 bolt dia.
1538 101 201 1114 644 738 576 13 1346 1161 40 767 1474 1299 1084 1352 1126 1386 1329 1134 81 86 366 1434 495 1124 592 118 472 641 1313 1023 296 1175 350 962