per centimetre, giving more engagement and adjustability to the fixing. They need to be used in conjunction more commonly available 6-Lobe Pin drive. The tooling is therefore more specialised and harder for members for use where conditions can be challenging such as food preparation or clean room operations. Manufactured Commonly referred to as a setscrew or simply as a bolt. The fully threaded DIN 933 or ISO 4017 should The width of the hexagon nuts across flats s is specified in ISO 898-2 Table A.1 for bolt sizes M5 to M39.

A countersunk headed screw conforming with ISO 10642 or DIN 7991, requiring a hex key (otherwise known more secure and stronger fitment. Used where high levels of strength are required - a fine pitch bolt is required. Uses include street furniture and garden equipment. Also known as a Star or 6 Lobe Drive. type of thumb screws. The large head diameter allows these fasteners to be easily adjusted to a precise for a screwdriver or ratchet. The 'knurled' feature of the head makes this type of screw ideal for useend also ensures a smooth snag-free finish protecting both the fixing and any foreign body that may come the need for a washer. Flange bolts are a more attractive alternative to their DIN 931 and DIN 933 hex The tensile stress area A s corresponds to the reduced cross-sectional area inside the threaded part of the bolt.

minimum; In some cases a full thread will be supplied where a partial threaded shank is indicated inwhen connecting two pieces of threaded bar/studding. Please note that these items are not produced to The design resistance of a group of fasteners may be taken as the sum of the design bearing resistances F b,Rd of the individual fasteners provided that the shear resistance F v,Rd of each individual fastener is greater than or equal to the design bearing resistance F b,Rd. Otherwise the design resistance of a group of fasteners should be taken as the number of fasteners multiplied by the smallest design resistance of any of the individual fasteners as specified in EN1993-1-8 § 3.7(1). For this case elastic linear distribution of internal forces should be used as specified in EN1993-1-8 §3.12. for a standard slotted screwdriver. The 'knurled' feature of the head makes this type of screw ideal

the driving tool may otherwise scratch its surface. Generally manufactured with a full thread, though Westfield Fasteners Limited is a company registered in England and Wales with company number 07215583. of fasteners have the standard coarse pitch unless otherwise stated. A coarse pitch M6 bolt or screw 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. form, with less rounded, squared off wings. Similar to DIN 314/315. Please note that the wing span mayuse where more thread engagement is desired. Only for use in conjunction with a matching Fine Thread