Mlid steel countersunk square plough bolts mlid steel countersunk nib bolts 6. Flat head countersunk socket cap screws din 7991 are not intended for high strength application. Iso 10642 hexagon socket countersunk head cap screws dimensions, specifications, standard, weights, equivalent and download pdf. Hexagon socket countersunk head screw mettex fasteners.
Ajax metric hexagon commercial 3031 bolts and set screws as1111. Metric countersunk hole dimensions chart a pictures of. Generally our preferred stock is to din if dimensions are critical to your application you should check with us prior to ordering. They can be tightened with our hex tips and allen keys. Iso metric socket countersunk head screws dimensions in table 18. Vented socket countersunk screws are available through our custom manufacture service. Dimensions mechanical properties application data iso 10642 dimensims mm. Metric socket countersunk head screws din 7991 bs 4168 iso 10642 materials and finishes steel 10. Unless specified, all dimensions are in millimeters some products are changing from din to iso standard. Using fewer socket screws of the same size can achieve the same clamping force in the joint. Dimensions of slotted flat countersunk head machine screws nominal size or. Due to the unfavourable geometry of the head, these fasteners have. Preloads and tightening torque for metric iso countersunk head steel screws with hexagon socket head or similar heads. Described as flat head in the usa are heattreated to give a material strength grade of 12.
For example, m10 or m106g, by default, specifies m10 x 1. Fastenerdata socket countersunk screw fastener specifications. Bs en iso 10642 hexagon socket countersunk head screws. Metrics in engineering metric fasteners screws, nuts. Fastenerdata metric coarse socket countersunk screw. Metric din 963 are slotted drive flat countersunk head machine screws. Countersunk screws torque table metric, iso engineers edge. Countersunk screws torque table metric, iso engineers. Engineering ansi hardware design data engineering metric hardware design data.
Special tooling can be created to produce nonstandard head dimensions or bolt heads with your companys name andor logo. Machine screws iso metric machine screws are limited to four different head shapes. Stainless countersunk socket screws metric din 7991. Specification for bolts and reference standards minimum ultimate tensile loads of hexagon socket countersunk head screws thread tolerance 6g for property class 8. Use them size for size and there are fewer holes to drill and tap and fewer screws to buy and handle. A joint requiring twelve 8 grade 5 hex heads would need only 7 unbrako socket head cap screws.
Countersunk bolts have a head angle of approximately 80 degrees. Nonstock items may vary due to variables in methods of manufacture. Metric machine screws are designed for metal to metal applications requiring a predrilled hole and a mating metric nut for the screw to thread into. Covid19 fastenright is open for business for all fastener and fixing enquiries. A countersunk screw is a type of fastening that sits flush with the surface of the material it occupies. Hexagon socket countersunk head screws dinstock ltd. Thread forms metric, metricfine, unf, unc, bsw, bsf, ba. Datasheet a4, 316 stainless steel, hexagon countersunk socket. Standard iso 8981 product grade a black oxide thermal or chemical specification for bolts and reference standards minimum ultimate tensile loads of hexagon. Fastenerdata metric coarse socket countersunk screw grade8. Metric countersunk head machine screws slotted farnell. These screws are widely used in many applications where a strong and reliable joint is required. If dimensions are critical, please check with tr what standard we can supply before specifying.
Basic countersunk bolt dimensions hr csk bolts size d m12 m16 m20 m22 m24 m27 m30 m36 pitch 1. To provide users of fasteners with dimensional and. To achieve this it is necessary for both the head of the screw and the countersunk hole to be controlled within prescribed limits. Generally our preferred stock is to din if dimensions are critical to your application you. Lb is the minimum body length and is the length of the unthreaded cylindrical portion of the shank. Socket head cap screws, countersunk flat socket head cap screws. Performance data listed are for standard production items only. The dimensional data in each case is presented for the various products, followed by the application data. Iso 10642 dimensions, specifications, equivalent standards, weights, pdf. Our highly efficient, skilled team of people are motivated by service excellence and continuous improvement. The organization of the book is designed to make it easy for the user to find his information in whatever module he is working. Countersunk flat socket head cap screws, socket head cap. M8 x 18mm countersunk head hexagon socket drive screw in grade 10.
Metric iso countersunk head steel screws torque table. Symbols and designations of dimensions are defined in iso 225. All dimensions are guide values and may deviate dependent on the manufacturer. The tightening torque will change, if fixing takes place with. Made to din 7991 specifications in metric sizes, anzors range of countersunk socket screws are mostly fully threaded but part threaded in some sizes. We carry extensive stocks of high quality socket head countersunk screws in a range of sizes and materials, in metric, british and american thread forms. An externally threaded fastener that must be torqued by its head into a tapped or other preformed hole to perform its intended service is a screw. Metric thread specifications always begin with thread series designation for example m or mj, followed by the fasteners nominal diameter and thread pitch both in units of millimeters separated by the symbol x. Stainless countersunk socket screws metric din 7991, unc, unf. Iso 10642 dimensions, specifications, standard, weights. Socket head countersunk screws we carry extensive stocks of high quality socket head countersunk screws in a range of sizes and materials, in metric, british and american thread forms.
Hexagon socket countersunk head screw07407 hexagon socket countersunk head screw51060 m24x180 10 07400. Typical values for countersunk heads screws with hexagonhexalobular socket or associated nut, friction coef. The standard metric fastener thread series for general purpose threaded components is the m thread profile and the coarse pitch thread series. Learn more about countersunk flat socket head cap screws offered by united fasteners.
Iso 10642 hexagon socket countersunk head cap screws. Counterbored hole dimensions for metric socket head cap screws. Commercially available hexagonalhead bolts with standard hexagonal. M12 x 18mm countersunk head hexagon socket drive screw in grade 10. We are the largest stockists of stainless steel fasteners in south. The basic requirement for countersunk head screws is that the head should fit into a countersunk hole with as great a degree of flushness as possible. Suggested seating torque values, only apply to metric grade 12. Din 7991 iso 10642 flat head countersunk socket cap screw. National standards adoptssets the dimensions and properties in common. Socket countersunk head machine screws to din 7991 have a hexagonal recess and is driven using a hex wrench or insert bit.
Bolts are available with and without a slot in the head. 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. We hold your world together stellenbosch university. Accus metric socket countersunk screws are available in thread sizes ranging from m2 to m24, and lengths from 3. The two examples of callouts below reference counterbored and countersunk holes. Available in both 304 and 316 stainless steel with the distinctive hex drive recess hexagon socket allen key drive. Din 933 1987 this standard contains specifications for fully threaded hexagon head screws with coarse metric thread for diameters m 1. M8 x 18mm countersunk head hexagon socket drive screw. Metric threads are defined in the standards document iso 9651. A4, 316 stainless steel, hexagon countersunk socket screws.
These screws typically are used so that you can cover them easily with either a screw cap or piece of wood. Din 7991 iso 10642 flat head countersunk socket cap. M12 x 18mm countersunk head hexagon socket drive screw. Insert the key into the socket and apply the torque on the nut while holding the key. Dimensions of cross recessed flat countersunk head machine screws. Socket head cap screws metric body and grip lengths. The purpose of producing them with a strength of the property class 10. The basic requirement for countersunk head screws is that the head should fit into a. We hold your world together at boltfast, our high quality nuts, bolts, fasteners, studs, washers and screws have successfully held the world in one piece since 1983. Wrench openings for square and hex bolts and screws 32 to 33 heavy hex bolts 34 heavy hex structural bolts 35 highstrength structural bolting 36 carriage bolts and lag bolts 37 square bolts 38 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. Due to the unfavourable geometry of the head, these fasteners have reduced load ability.
Metric din 963 slotted flat countersunk head machine screws. Hexagon socket countersunk head screws en iso 10642 din 7991 grade 10. These screws are usually fully threaded with machine threads and blunt point. We have also been certified as a level 3 bbee contributor. 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. Inch series flat socket head cap screws nominal size basic screw diameter d body diameter min.
1256 396 513 301 111 515 1177 777 1131 938 918 1164 265 60 1412 1240 1527 223 936 1133 1509 1434 908 992 1174 275 911 1498 150 612 1457 673 1388