Bolt: hexagon head

ISO 4015

ISO 4015 - Hexagon head bolts with reduced shank - Product grade B

Automatically build standard products in SOLIDWORKS with TSFP.

Hexagon head bolts with a reduced shank of about the pitch diameter instead of the plain shank of thread diameter of ISO 4014, metric coarse pitch thread, product grade B. The bolt is turned by a spanner on a hexagon head; its thread is rolled on the thinner blank, so it keeps the thread diameter d over the thread length b, while under the head the shank stays at ds, about the pitch diameter, and rises to d over the thread run-out x of about 2,5P. Rolling the thread without turning the shank down saves material, and the thinner shank makes the bolt a little more elastic than a bolt with a full shank. 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, the bearing face dw and the shank diameter ds, while the length decides the thread length b - 2d + 6 mm up to 125 mm and 2d + 12 mm above it. The head keeps the nominal width across flats s and head height k of ISO 4014, with the minimum width across corners e and bearing face dw of product grade B; the manufacturer may raise ds to d over at most 0,5d under the head. Covers threads M3 to M20 with nominal lengths 20 to 150 mm, in steel property classes 5.8, 6.8 and 8.8 and in stainless steel A2-50 and A2-70. The partially threaded bolt with a full shank is ISO 4014.