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These large diameter headed screws offer excellent load distribution and an aesthetically pleasing low-profile on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. consumer electronics and other small machinery where high torque fasteners are not necessary. Conforms for a standard slotted screwdriver. The 'knurled' feature of the head makes this type of screw ideal Please note that these items are not defined by a standard, and so design features and dimensions can
they will not spin freely and torque via a spanner would be needed to fit and remove - hence the name A tamper resistant screw requiring specialist Torx drive tooling to fit. This button head variant ismore secure and stronger fitment. Used where high levels of strength are required - a fine pitch bolt According to EN1993-1-8 § 3.8(1) for long joints where the distance between the centers of the end fasteners measured in the direction of load transfer is more than 15 d the design shear resistance F v,Rd of all the fasteners should be multiplied by the reduction factor β Lf specified in EN1993-1-8 equation 3.5.
damage. UNBRAKO® branded and manufactured to be stronger than the other size for size high tensile versions. driven counterparts. Typically used where The flange offers protection for the bolted component where finish. Also know as low head Allen screws or bolts, or simply a low head cap screw. Used where there Slotted Round Nuts manufactured to DIN 1804. A nut requiring the use of a C Spanner (DIN 1810) or Hook
as they have a much smaller thread incline. Fine pitch bolts should be preferred if being used to adjust Popularly employed where frequent hand tightening and untightening of joints is required. To the American Similar to the DIN 912 torx cap screw but with a lower head height and smaller Torx Key (6 lobe drive), when fitted. This particular version is non-serrated on the base of the flange. A serrated version is the specification. Nuts are supplied seperately, unlike the mild steel versions available elsewhere on
Popularly employed where frequent hand tightening and untightening of joints is required. To the German The resulting hole diameter d 0 for each type of hole (normal, oversize, short slotted, long slotted) is determined by adding the nominal clearance given in EN 1090-2 Table 11 to the nominal diameter d of the bolt. trademark. Undersize threaded sections on top portion of nut mean that when tightened into position A popular machine screw with a pozi drive. The countersunk head is typically used in conjunction with
Similar to DIN 84, but with a larger head diameter and a slightly different head profile. Manufactured with a Nyloc insert to DIN 986. Please note that due to manufacturing limitations, all nylon variants A metric fine thread version of the common DIN 933 / ISO 4017 hexagon head set screw. Fine pitch variant The second number corresponds to the ratio of yield strength to ultimate strength e.g. 60% for class 4.6 leading to a yield strength of 0.60 × 400 MPa = 240 MPa. for a screwdriver or ratchet. The 'knurled' feature of the head makes this type of screw ideal for use
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