U bolt dimensions range from m6 to m20 in terms of thread diameter, with various lengths and specials also available. There are no fewer than 5 different threads for different applicaons and 10 different standard strength grades defined for each size of bolt. Metric hex bolt diameters and thread pitches bolt depot. Here, r min is minimum root radius, t d2 is pitch diameter tolerance and h is height of sharp vthread. Din 580 dimensions, specifications, standard, weights. Ubolt can be furnished with longer tangents d or with longer threads e.
This standard is part 1 of a twopart series on iso metric hexagon bolts and screws. 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. B3188ns nonstandard ns ubolts are available upon request. Width across flats width across corners height of head d p ds s e k max. Jan 17, 2019 for specification of imperial bolts thre and hole countersunk hole an overview sciencedirect topics socket head cap wrench sizes fastener handout fastener handout countersunk hole an overview sciencedirect topicscountersunk hole an overview sciencedirect topicsdrill and counterbore sizesdrill and counterbore sizes for socket head cap s perholes chartssizes sizing chart socket cap asmhelicoil. Limits of sizes for general purpose bolt and nut threadsmedium quality. Metric millimeter bolt and nut substitutions will be allowed in.
Nuts m20 and larger may be double chamfered, or have a washer face on one side and a chamfered surface on the opposite side. Gradea bolts are the preferred style for most applications. Except for the very lowest grades, metric nuts and bolts all carry iden. This standard covers stud bolts with threads produced to tolerance 6g which is customary for bolt nut assemblies of thread engagement group n as specified in din iso 9651. Din iso metric fasteners crossreference din iso jis category standard standard standard description 68 internal threads, class 6h 8981 external threads, class 6g r1501 internal threads, class 6h 84 1207 machine screws, slotted cheese head 85 1580 machine screws, slotted pan head 125a 7089 flat washers, standard 126 7091 flat washers. 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. 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. Stud bolts with metric thread are designed to perform functions similar to those of double end studs clamping type or interferencefit type. Metric hex nut dimensions sizes chart according to iso 4032. The rest of the dimensions are tabulated values from the asme standard. The nut thickness shall be the overall distance, measured parallel to.
Besides fasteners, the other main products that boltfast supplies are. When referring to standards and specifications, we. Size limits for standard external thread tolerance classes 6g and 4g6g apply prior to coating. Limits of sizes for general purpose bolt and nut threads medium quality 95. Din 976 metric thread stud bolts dimensions, specifications, standard, weights, equivalent and download pdf email. These thread sizes and classes represent bolts and screws, as well, as other standard external threads. Limits of sizes for general purpose external and internal screw. Because iso standard covers only sizes up to m 36, the din standard was subdivided into part 1 m 1.
A style 1, heat treated fastener with a metric thread pitch. The following table chart are standard metric external thread sizes m 0. This standard covers stud bolts with threads produced to tolerance 6g which is customary for boltnut assemblies of thread engagement group n. 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 head to the end of the bolt. Metric countersunk hole dimensions chart a pictures of hole. Standard metric hex nuts, types styles 1 and 2 per. Metric socket countersunk head screws elektronik lavpris. In 1967 version of this standard, the widths across flat dimensions for ml o and ml 2 size fasteners were specified as 17 mm and 19 mm respectively. Din 976 dimensions standards specifications micronsteel. Thread diameter d m 3 m 4 m 5 m 6 m 8 m 10 m 12 m 14 m 16 m 20 m 24 m 30 m 36 thread pitch coarse 0.
A table of major diameters and pitches, up to 30 mm in diameter thread classes of fit. If the pitch is the normally used coarse pitch listed in iso 261 or iso 262, it can be omitted e. Standards for dimensions and tolerances are issued. Iso 4762 hexagon socket head cap screws dimensions, specifications, standard, weights, equivalent and download pdf. A short guide to metric nuts and bolts 2 thomson rail.
Standard ubolt figure 283 carbon steel figure 283pvc. Width across flats wrench size and corners, nut height thickness and thread pitch dimensions are given for nut sizes between m1. Therefore, all you have to do is look at a hex bolt dimensions chart and you will find everything you need to know. Metric socket countersunk head screws din 7991 bs 4168 iso 10642 materials and finishes steel 10. Metric high tensile, precision hexagon head bolts, screws and hexagon nuts. Gradeb bolts have looser tolerances and can be manufactured in a cold or hotforging. Metric drill sizes are used primarily in europe and use metric units to measure the drill bit diameter.
Do not use these values for standard metric internal thread design. Although the head dimensions for structural bolts are the same as any heavy hex headed fastener per asme b18. This standard contains specifications for fully threaded hexagon head screws with coarse metric thread for diameters m 1. For a given diameter, a fastener may be available in coarse standard, fine and sometimes super fine thread. Imperial, metric fine and non standard metric sizes will be manufacture. The standard metric fastener thread series for general purpose threaded components is the m thread profile and the coarse pitch thread series. Legally binding document step out from the old to the newjawaharlal nehru invent a new india using knowledge.
Metric thread pitch table metric pitch table metric diameter pitch mm coarse standard fine standard 3mm 0. Maximum rounded form minor diameter d 3max d 2max 0. The designation of a screw thread gives the thread symbol, the nominal size, the pitch, and the thread tolerance class ex. Principles and basic data iso 96521980 iso general purpose metric screw threadstolerances part 2. Din 580 lifting eye bolts collar eyebolts for lifting purposes dimensions, specifications, standard, weights, equivalent and download pdf. Standard u bolt figure 283 carbon steel figure 283pvc pvc coated figure 283ss stainless steel our standard u bolts are recommended for use as supports or guides for piping. Iso 4762 dimensions, specifications, standard, weights. General dimensions of structural bolts as1252 1983 bolt dia. Here, r min is minimum root radius, t d2 is pitch diameter tolerance and. A short guide to metric nuts and bolts dd thomson rail.
Dimensions refer to the basic profile in accordance with iso 68. On the head of each bolt are two numbers separated by a decimal point, the full list includes ten grades from 3. The figure 283pvc is for support of piping where contact with the pipe is not desired. Iso metric screw thread chart 1st 2nd height flat size external diameter choice choice h mm af mm ac mm 10. Iso metric profile external bolt thread internal nut thread basic mm size mm thread designation simple thread designation pitch mm class major dia. When furnished in hotdip galvanized finish, oversize tapped hex nuts must be used. 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. Us hex bolt sizes and thread pitches continued mm 10 20 30 40 50 60 70 80 90 100.
Metric countersunk hole dimensions chart a pictures of. Below is a chart with the dimensions of our stocked high tensile bolts, in accordance with australian standards. Standard external metric thread and fastener sizes m 0. Australian bolt standards bolts nuts screws online.
However, in the 1983 version, these widths across flat dimensions were brought in line with iso 4032. Well, good news is that fasteners are made to universal specifications that are known globally. Nuts m16 and smaller are chamfered on the top and the bearing surface. Iso 724 specifies basic dimensions of metric threads in accordance with iso 261. Standard u bolts are available off the shelf in mild steel zinc plate and stainless steel. Standard part 2 contains specifications for hexagon head bolt with metric screw thread from m 42 to m 160 in product grade b.
Standards for metric bolts are promulgated by the iso, but adopted by individual nations dimensions. Length is measured from under the head to the end of the bolt note. Nominal sizeand thread diameter d depthof w ash erfc c transition dimt da diameterof unthreaded shank ds dia. The objective of this standard is to provide manufacturers, suppliers and users with the dimensions, tolerances and material requirements for hexagon head bolts iso product grade c with iso metric coarse threads. Limits of sizes for general purpose bolt and nut threads medium quality. For example, m10 or m106g, by default, specifies m10 x 1. Iso 7241978 iso metric screw threadsbasic dimensions iso 96511980 iso general purpose metric screw threads tolerances part 1. The external thread allowance may thus be used to accommodate the coating thickness on coated parts. There are a variety of standards used to define drill sizes, the most common one in the uk is the british standard bs 328 set which includes twist drill bit sizes between 0. Have you ever wondered how thick is the head of the bolt that i just bought. This international standard gives specifications for fully threaded hexagon head screws with metric dimensions and thread diameters from 3 mm up to and including 36 mm. They can be created to drawings or customer specification and can be manufactured to order, please send your requirements. In metric bolts, strength is described by property classes. A metric iso screw thread is designated by the letter m followed by the value of the nominal diameter d the maximum thread diameter and the pitch p, both expressed in millimetres and separated by the hyphen sign, e.
1506 694 85 1175 967 222 24 1365 1173 240 1541 370 56 690 1171 1494 683 1300 1058 1199 1359 1130 107 1361 1326 1429 566 1057 1286 309 422