TSFP

Standard products

Search for standard products in the TSFP catalog.

×

← Bolt and screw Standards

ISO 4014

ISO 4014

Bolt: hexagon head · Products: 303

ISO 4014 - Hexagon head bolts

Hexagon head bolts with metric coarse pitch thread, product grades A and B. The bolt is turned by a spanner on a hexagon head and keeps a plain shank under it, so the thread stops short of the head and the joint is clamped on unthreaded metal; this is the fastener of steelwork, flanges and machine frames. A size is the pair d x l: the thread diameter fixes the width across flats s, the width across corners e, the head height k and the bearing face dw, while the length decides the thread length b - 2d + 6 mm up to 125 mm, 2d + 12 mm up to 200 mm and 2d + 25 mm above it - and the product grade, which is the close grade A up to M24 and 150 mm and the medium grade B beyond either. Covers threads M1,6 to M64 with nominal lengths 12 to 500 mm. Its German predecessor DIN 931 was replaced by DIN EN ISO 4014, but keeps wider spanner sizes on M10, M12 and M14; the fully threaded counterpart is ISO 4017 and the grade C version is ISO 4016.
ISO 4017

ISO 4017

Bolt: hexagon head · Products: 353

ISO 4017 - Hexagon head screws

Hexagon head screws with metric coarse pitch thread, product grades A and B. The screw is turned by a spanner on a hexagon head and is threaded over its whole length, so one size fits any grip and it can be driven into a tapped hole to any depth; this is the general assembly fastener, used wherever the joint does not need to be clamped on unthreaded metal. The head is the head of ISO 4014 value for value: the thread diameter fixes the width across flats s, the width across corners e, the head height k and the bearing face dw. The thread reaches the head but for the run-out under it, which the standard limits to a max = 3P, so the guaranteed thread length is l - 3P. The length decides the product grade, which is the close grade A up to M24 and 150 mm and the medium grade B beyond either. The range of standard lengths follows a rule instead of a table: from 2d rounded to the nearest nominal length, up to ten diameters and never above 200 mm - a longer joint takes the partially threaded bolt of ISO 4014. Covers threads M1,6 to M64 with nominal lengths 3 to 200 mm. Its German predecessor DIN 933 was replaced by DIN EN ISO 4017, but keeps wider spanner sizes on M10, M12 and M14; the partially threaded counterpart is ISO 4014, the grade C version is ISO 4018 and the fine pitch one is ISO 8676.