Mechanical properties of fasteners made of carbon steel and alloy steel part 2. Sundram fasteners limited fasteners division fd c o n t e n t s sl no. Bolts, screws, studs low or medium carbon steel 14 thru 112 33,000 60,000 astm. Common bolt heads include hex, slotted hex washer, and socket cap. Hexagon head bolts, screws and nuts of product grades a and b, part 1. When changing from din to iso standards, some nut heights have been. First you want to pick a nut specification that is recognized by the bolt. A wide variety of jis standard bolts and nuts options are available to you, such as standard. Standard size stainless steel hexagon bolt and nuts made in china, find complete details about standard size stainless steel hexagon bolt and nuts made in china,hex bolt and nut, bolt nut, bolt from bolts supplier or manufacturershenzhen huaxianglian hardware co. Heavy hex a heavier pattern version of a standard hex nut.
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. Some equipment designs provide very little nut and wrench clearance, so occasions may arise when manufacturers or users must install shorter stud bolts or tap end studs when using the r gaskets. Technical specification for metric hexagonal bolts, nuts. Glossary of fastener terms the bolt supply house ltd. At boltfast, our high quality nuts, bolts, fasteners, studs. Standard nut and bolt sizes pdf galvanized nuts and washers will fit galvanized. Some bolt heads instead lock the bolt in place, so that it does not move and a tool is only needed for the nut end. Indian standard specification for high strength structural bolts. It is caused by a pushing or pulling force at 90 from the axis of a part. Standard heavy hex structural bolts are made of low to mid carbon steel. U bolt dimensions range from m6 to m20 in terms of thread diameter, with various lengths and specials also available.
Nuts compared to a bolt, a nut is a fairly simple beast. Uts bolts that have diameters of less than 14 inch are provided gauge numbers, but inch measurements are used between 14 and 1 inch sizes. It is really nothing more than a chunk of steel into which is cut appropriate internal threads so that it may be screwed onto a bolt. The scope of the present chapter is limited to bolted connections used in tension and compression members as well as in hangers. Bolt science providing solutions to bolting problems. The tightening of the bolt and nut produces a tensile prestress, which is approximately equal to the compressive stress introduced in the joint material. About 34% of these are bolts, 3% are screws, and 0% are seals. The flat area of the nut that contacts the joint when it is tightened is known as the. Shoulder bolts also known as stripper bolts are used to create a pivot point. Plain pb050 zinc pb050z1 d a f s b depth of square and head bolt width of square diameter head diameter feed thickness max min max min 516. Nuts with specified property classes coarse thread and fine pitch thread.
Industry standards and lvanized nuts and washers will fit galvanized. Skf lock nuts of kmk design lock quickly and safely without the need for a locking washer and keyway. Description this section contains information on the correct usage and identification of bolts, flat washers, lock wash. Table 3 nut rotation requirements bolt length nominal nut rotation min 2d 180. Bolted connections, which resist moments and connections between structural members, will be covered in the. Nylon insert lock a nut with a nylon insert to prevent backing off. External threads or bolts are designated with the suffix a. J bolts shoulder bolts j shaped bolts are used for tiedowns or as an open eye bolt. Ensure that all threads for bolts and nuts have class 2 fit tolerances in accordance with asme b1. Metric millimeter bolt and nut substitutions will be allowed in accordance with these tables. Astm specifications for bolts nuts washers americal. About 50% of these are bolts, 7% are screws, and 0% are anchors. Flanges are standardized according publications from. For bolting specifications that do not have a published proofload, it is usually calculated at 92% of minimum yield strength.
Acorn acorn nuts are a high crown type of cap nut, used for appearance. Finished hex head bolts grade 2, 5, 8 and l9 sae grade 2, astm a307 plain. Tolerance 6h a as specified in din part 12 and 15. Pn 16 flanges din en 10921 dimensions of pn 16 flanges din. When compared to uts, 6g metric threads will be very similar to a 2a uts bolt in terms of thread fit. Bolt length nominal diameter m12 m14 m16 m18 m20 m22 m24 m27 m30 m33 m36 m39 m42 m45 m48 m52 m56 m60 m64 approximateweightsinkilogramskgseach nuts m12 m14 m16 m18 m20 m22 m24 m27 m30 m33 m36 m39 m42 m45 m48 m52 m56 m60 m64. Elevator bolts elevator bolts are often used in conveyor systems. Nylon insert jam lock a nylock nut with a reduced height. Standard size stainless steel hexagon bolt and nuts.
Metric bolt conversion data for industrial bolts rods, machine screws and small diameter fasteners from raaj sagar steels includes metric to standard bolt conversions. Astm f3125 f3125m 19 standard specification for high. Hexagon lock nuts din 439 2 dinstockltd,unitc1hortonwood10 telford,shropshiretf17es,unitedkingdom tel. United states standard dimensions of bolts and nuts. Bolts, steel galvanised, hex head, galvanised hex nut. The nubolt assembly is a modified coated ubolt with irod halfround thermoplastic designed by corrosion engineers to combat crevice corrosion at ibeam style pipe supports. No substitution will be allowed for any a325 bolts supplied. The short diameter or width across the flats is equal to one and onehalf times the diameter plus 18 inch for rough or unfinished bolts and nuts, and one and onehalf times the bolt diameter plus, 116 inch for finished heads and nuts. The basis of the franklin institute or united states standard for the heads of bolts and for nuts is as follows. F2281 042017 standard specification for stainless steel and nickel alloy bolts, hex cap screws, and studs, for heat resistance. Japanese industrial flanges, bolts, nuts, and gaskets standards and specifications from jas the japanese standards association engineering toolbox resources, tools and basic information for engineering and design of technical applications. Countersunk flat head screws common head style with type h or type z cross recess product grade a part 2.
Index fastener handbook product description section page forward 910 head marking 1 11 nut marking standard bolt product ranges 2 1415 iso metric 14 bsw threads 14 unc threads 15 unf threads 15 thread forms and fits 3 1618 thread specifications 16 screw thread terminology 17 standard thread forms 17 thread fits 18 testing of bolts. The large head offers a greater bearing surface that distributes the clamping load over a greater area. Flange stud bolts, bolts flanges chart, bolts flanges. Nut and bolt sizes pdf for a chart of fastener grades, head markings and mechanical properties, see bolt. A short guide to metric nuts and bolts dd thomson rail. F3125 f3125m19 standard specification for high strength structural bolts and assemblies, steel and alloy steel, heat treated, inch dimensions 120 ksi and 150 ksi minimum tensile strength, and metric dimensions 830 mpa and 1040 mpa minimum tensile strength bolts highstrength steel. History of bolts nuts and bolts were invented in as early as the 1 st century, the romans used them to bind windows, secure chariots and build machines. Step bolts and countersunk head elevator bolts 39 nuts finished and heavy hex nuts 41 hexagon machine screw nuts 42 type a forged wing nuts 43 hex slotted nuts 44 hex and heavy hex jam nuts 45 to 46 hex castle nuts 47 large diameter hexagon head cap nuts 48 round spanner nuts 49 heavy hex nuts with tommy bar holes 410. Metric bolt conversion to standard bolt conversion chart. In addition, a tapered washer or conical seat is needed to compensate for the fact that the rock face is very seldom at right angles to. View our conversion chart to find out what size heavy hex nut that you need for your job. Mar 03, 2015 the nut shall be rotated in accordance with the requirements of table 3 from the initial tightening position without fracture of the bolt, or stripping of the bolt or nut thread. Standard u bolts are available off the shelf in mild steel zinc plate and stainless steel. P stud bolts, astm a193a193m and asme sa193sa193m, grade b7 stud with 2h heavy hex nut, plain, assembly the information below lists the required dimensional, chemical and physical characteristics of the products in this purchase order.
They can be created to drawings or customer specification and can be manufactured to order. Fastener, bolt and nut supplier in malaysia standard bolts. How to determine bolt thread size bolt threads strength. A wide variety of standard bolt and nut options are available to you, such as standard. Nut and washer sizes indicate the screw or bolt they fit. This indian standard part 3 fourth revision which is identical with iso 4032. These are designed to engage with the tool used to tighten them. These fastener standards allow hardware product manufacturers, as well as the endusers of such products, to examine and assess fasteners to ensure their strength and quality towards safe utilization. Standard nut bolt sizes pdf nut used on both ends to create tension, it serves the function of a bolt and is then classified as a. Purchase the unique quantity you need from fmw fasteners today. Cirrus airplane maintenance manual model sr22 2060 page 1 all effectivity.
Washers spread the load over a greater surface area when tightening a bolt, screw or nut. A55 fastener torque charts imperial has made a concerted effort to provide accurate information in its catalog and on its web site, however imperial assumes no responsibility for the accuracy of the information. The behavior and life of the joint depends on how tightly the bolts. In preparing this guide to torque values, the following basic assumptions have been made. Mlid steel countersunk square plough bolts mlid steel countersunk nib bolts 6.
Black white zinc galvanised cadmium plated hot dip galvanised. There are no fewer than 5 different threads for different applicaons and 10 different standard. Us hex bolt sizes and thread pitches bolt depot nuts. Flange dimensions are determined by the pipe size and the pressure class required for the application. In this chapter, the different types of bolts and bolted connections used in steel structures are introduced. The vast majority of metric fasteners are presently manufactured to this standard which was created long before iso standards. 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. Yardlink 38in x 2in galvanized thread carriage bolt 10count. Heavy hex bolts distributor structural bolts supplier. The nut remains perpendicular to the shaft when the insert is pressed against the shaft thread. The chart below shows metric bolt conversions and din numbers for fasteners. Bolts and nuts specification pdf figure 1 illustrates a typical stressstrain relationship of a bolt as a tension load is. Us hex bolt sizes and thread pitches continued mm 10 20 30 40 50 60 70 80 90 100.
A short guide to metric nuts and bolts 2 thomson rail. In either case, some form of faceplate is required to distribute the load from the bolt onto the rock face. Technical specification for metric hexagonal bolts, nuts, coach screw, and flat washers. The bolt is stressed up to the proofload value, and if there is no deformation, elongation, or fracture, then the bolt is deemed to have passed. Mcmastercarr is the complete source for your plant with over 595,000 products. Cap a nut with a domed top over the end of the fastener. Metric hex bolt diameters and thread pitches bolt depot.
Heavy hex bolts have a head that is larger than a standard finish hex head. Nut and bolt sizes pdf nut and bolt sizes pdf download. Astm specifications for bolts nuts washers americal society. Lowcarbon steel externally and internally threaded standard fasteners a320 alloysteel bolding materials for lowtemperature service. Length is measured from under the head to the end of the bolt note. For this reason, appendices a and b follow in this. Standard sizes available to fit various pipe diameters. Carbon and alloy steel nuts for bolts for high pressure and high temperature service. At the other end of the rockbolt from the anchor, a fixed head or threaded end and nut system can be used.
Astm fastener standards specify and test the properties of mechanical fasteners such as bolts, nuts, screws, and other hardware fasteners. Astm americal society for testing and materialsthe american society for testing and materials is an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services. Check this is the latest process zone version before use. Bolts use a wide variety of head designs, as do screws. Specification for structural joints using astm a325 or a490 bolts june 30, 2004 supersedes the june 23, 2000specification for structural joints using astm a325 or a490 bolts. The kmk nut is locked in position with a steel insert, an integral part of the nut thread, which presses against the shaft thread. Srjc, engr45, 2012 the nuts and bolts behind engineering. Standard specification for aluminum transmission tower bolts and nuts.
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