These include a vast range of sizes and types stocked by distributors and manufacturers for an. 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. Technical specification for metric hexagonal bolts, nuts. Us bolts head and wrench sizes hex bolt, lag bolt, square bolt and heavy hex bolt us hex bolts inches ansiasme b18. The size of a metric screw or bolt is specified as diameter, pitch and length, in millimeters millimeters is abbreviated mm. A short guide to metric nuts and bolts 2 thomson rail. Nominal sizeand thread diameter d depthof w ash erfc c transition dimt da diameterof unthreaded shank ds dia. Choose from our selection of metric bolts, including over 11,300 products in a wide range of styles and sizes. Our standard u bolts are recommended for use as supports or guides for piping. Uniform distribution of the force on the bolt flanks. This number will be measured in millimeters or centimeters. The standard metric fastener thread series for general purpose threaded components is the m thread profile and the coarse pitch thread series.
If you print out this pdf, make sure you print it at full size. A table of major diameters and pitches, up to 30 mm in diameter thread classes of fit. Lb is the minimum body length and is the length of the unthreaded cylindrical portion of the shank. Shaft diameter the first number associated with metric bolts is the one that is for the actual diameter of the bolt. Socket head cap screws metric body and grip lengths.
Dimensions of slotted flat countersunk head machine screws nominal size or. 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. Metric screws plain black metric socket head cap screws with coarse thread grade 12. Browse our products range to view a detailed list of all. Determine the diameter of the bolt by looking at the first number. The resulting reduced notching effect stops the bolt from turning round and round. Engineering ansi hardware design data engineering metric hardware design data. Metric thread pitches metric thread diameters note. Dimensions of cross recessed flat countersunk head machine screws. Metric socket head cap screws size table engineers edge. The following are to links of iso metric hardware specifications table charts. Metric thread extended thread size range iso thread height male thread h3 thread height female thread h1 sorted by thread class click here to return to the thread data chart page index. It is intended for advisory purposes only and use of this information is completely voluntary. 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.
When reading the metric bolts, you will need to know what these three numbers mean for an accurate reading. Standard metric hex nuts, types styles 1 and 2 per. Fastener technical data and charts section important disclaimer all of the information provided in this section has been assembled with concern for accuracy. A short guide to metric nuts and bolts dd thomson rail. 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. The design principles of iso generalpurpose metric screw threads m series threads are defined in international standard iso 681. Hex head lag screw din 571 hex head shoulder bolt, long thread din 609. Supplier of metric nuts, bolts, screws, washers and. Metric bolt actual dimensions engineering tools, mechanical. Unless otherwise shown in the contract documents, appropriate. 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.
Standard u bolts are available off the shelf in mild steel zinc plate and stainless steel. General dimensions of structural bolts as1252 1983 bolt dia. Metric external thread dimensions are given in the external thread chart below according to asme b1. Different standards are the responsibility of various organizations and are not always identical.
Width across flats width across corners height of head d p ds s e k max. The iso metric screw threads are the most commonly used type of generalpurpose screw thread worldwide. The following sizes of metric din 933 hexagon head cap screws bolts are available for immediate. Basicdimensions metric multistandard components corp. Iso metric profile external bolt thread internal nut thread basic mm size mm thread designation simple thread designation pitch mm class major dia. Npt dimensions b a 1 47 effective thread npt size threads per inch a inches b inches 116 27 0. 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.
Besides using metric measurements, a metric bolt uses the distance between the threads rather than the thread pitch, used in. 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. Shoulder diameter a thread c thread length d head diameter e head height f allen wrench size. Nonstock items may vary due to variables in methods of manufacture.
For example, m10 or m106g, by default, specifies m10 x 1. 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. Since then the local business has developed considerably, positioning itself as one of the fastest growing companies in our industry. Metric fasteners are specified with a thread pitch instead of a thread count. Hex cap screws manufactured to the dimensional specifications of any one of the listed standards are compatible with nuts manufactured to the metric specification. Length is measured from under the head to the end of the bolt note. M p x d 5000 these formulae may be used for bolts outside the range of the tables, m torque lbf. They were one of the first international standards agreed when the international organization for standardization iso was set up in 1947. A joint requiring twelve 8 grade 5 hex heads would need only 7 unbrako socket head cap screws.
Standards for metric bolts are promulgated by the iso, but adopted by individual nations. Thread pitch diameter, major diameter and minor diameter for m profile external threads are given. How to determine bolt thread size bolt threads strength. The bolt chart provides both us and metric stud sizes. Use the dimensions of your bolt to determine the appropriate size nut. How do i determine the wrench size or hex key size for hex head bolts and socket heads. B501 light weight u bolt with 2 hex nuts tolco fig. Sizes not listed can be manufactured within 710 working days. Recommended for supporting or anchoring light pipe loads. Using fewer socket screws of the same size can achieve the same clamping force in the joint. Use them size for size and there are fewer holes to drill and tap and fewer screws to buy and handle. Standards for metric bolts are promulgated by the iso, but adopted by individual nations dimensions. Drilled head metric hexagon socket head cap screws normally are not available in screw sizes smaller than m3 nor larger than m36.
We do not guarantee its completeness or validity and assume no responsibility. Metric bolt size chart stud bolt to nut size chart. Nicholson hand file, thread restoring, thread teeth, square. Fastener grade us or class metric refers to the mechanical proper ties of.
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. In this article, im going to share with you some woodworking tips and tricks ive accumulated over t. Metric screw thread chart metric tap size tap drill inches clearance drill inches m1. Unbrako standards meet or in many instances, exceed the requirement of the standards listed. Supplier and manufacturers fastener and screw bolt design, formula and calculations. Metric hex nut dimensions sizes chart according to iso 4032. Check this is the latest process zone version before use. Iso metric hardware specifications table chart engineers. 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.
There are no fewer than 5 different threads for different applicaons and 10 different standard strength grades defined for each size of bolt. Metric nuts choose from metric hex, flange and lock nuts with coarse or fine thread. U bolts all dimensions in charts and on drawings are in inches. How do i determine the wrench size or hex key size for hex.
This is represented by the last number in a metric bolt s designation. Width across flats wrench size and corners, nut height thickness and thread pitch dimensions are given for nut sizes between m1. Metricbolt provides many variations of metric fasteners including metric screws, and metric hex bolts for various applications. Standard ubolt figure 283 carbon steel figure 283pvc. Technical specification for metric hexagonal bolts, nuts, coach screw, and flat washers. For example, a hex cap screw with a 12 thread diameter, threads per i nch, and a 2 length could be listed like this. The diameter of all bolts is measured as the outside of major. 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. The size most commonly associated with screw threads is the nominal diameter.
Commercially available hexagonalhead bolts with standard hexagonal. Metric thread pitch table metric pitch table metric diameter pitch mm coarse standard fine standard 3mm 0. Metric bolts have three numbers that are associated with them. Standard u bolt figure 283 carbon steel figure 283pvc. Metric bolt dimensions atlanta rod and manufacturing. There is an exception thoughif pitch isnt specified, the fastener is coarse threaded. Metric bolts head and wrench sizes engineering toolbox. Performance data listed are for standard production items only.
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. Elevator bolts elevator bolts are often used in conveyor systems. Shoulder bolts also known as stripper bolts are used to create a pivot point. Hexagon flange bolts din 6921 high tensile pi tchof thread p thread length b coarse pitch bolt.
Metricbolt s roots date back to 1965, when a young technological entrepreneurship has emerged into a successful local business. A table of major diameters and pitches, up to 30 mm in diameter. Fastener length is measured from where the material surface is assumed to be, to the end. Metric bolt dimensions atlanta rod and manufacturing atlanta. Din 933 1987 this standard contains specifications for fully threaded hexagon head screws with coarse metric thread for diameters m 1. Metric thread pitch table stainless fasteners bolts. The figure 283pvc is for support of piping where contact with the pipe is not. In metric bolts, strength is described by property classes.
Stocked in a4 316 stainless steel as standard, in a range of lengths and diameters. They can be created to drawings or customer specification and can be manufactured to order. U bolt dimensions range from m6 to m20 in terms of thread diameter, with various lengths and specials also available. Iso metric threads consist of a symmetric vshaped thread. Metric bolt strengthbolt sizes strengths american bias croberts com very useful section on the consequence of bolt failure fastener design manual. Jbolts shoulder bolts j shaped bolts are used for tiedowns or as an open eye bolt. Metric fastener threads are also specified according to thread pitch, which is the distance between adjacent threads, again in millimeters.
Fastener tech data understanding series introduction. Iso metric screw threads are designated by basic diameter and thread pitch. Metric din 933 hexagon head cap screws bolts full thread. The figure 283pvc is for support of piping where contact with the pipe is not desired. For a chart of fastener grades, head markings and mechanical properties, see. Technical information metric thread pitch table metric pitch table metric diameter pitch mm coarse standard fine standard 3mm 0.
Buy nicholson hand file, thread restoring, thread teeth, square, metric bolt, 6 length. 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. Bolt thread dimensions the following tables list national pipe taper npt dimensions and straight thread dimensions for hex head bolts. 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. This is represented by the last number in a metric bolts designation. Low profile socket sex bolts are an aesthetically pleasing solution for clamping two or more materials together giving a neat finish on both sides. Each thread is characterized by its major diameter, d d maj in the diagram, and its pitch, p. 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.
727 989 38 152 1226 602 817 1396 203 526 1297 1010 1482 1393 573 1493 1104 1546 651 1191 228 527 136 290 976 1324 845 310 787 1024 615 499 439 1340 1219 436 1077 424