Hex Bolt STEP Files

Hex bolts from M6 to M48 to ISO 4014 / DIN 931 / KS B 1002 / JIS B 1180, organized by length. Real across-flats (s) and head height (k) are modeled, so you can drop them into assemblies and check wrench and head clearance right away.

Free 3D CAD models (STEP AP214). Built to real standard dimensions; threads are simplified (plain shank) per free-library convention.

Standard: DIN 931 / KS B 1002

Dimensions follow DIN 931 / KS B 1002. Width across flats for M10, M12, M14 and M22 differs from ISO 4014 (16, 18, 21, 34).

SizeLength (mm)DownloadM6x20.step

Browse all sizes (271)

M6x20 M6x25 M6x30 M6x35 M6x40 M6x45 M6x50 M6x55 M6x60 M6x65 M6x70 M6x80 M6x90 M6x100 M8x25 M8x30 M8x35 M8x40 M8x45 M8x50 M8x55 M8x60 M8x65 M8x70 M8x80 M8x90 M8x100 M8x110 M8x120 M8x130 M8x140 M8x150 M8x160 M10x30 M10x35 M10x40 M10x45 M10x50 M10x55 M10x60 M10x65 M10x70 M10x80 M10x90 M10x100 M10x110 M10x120 M10x130 M10x140 M10x150 M10x160 M10x180 M10x200 M12x35 M12x40 M12x45 M12x50 M12x55 M12x60 M12x65 M12x70 M12x80 M12x90 M12x100 M12x110 M12x120 M12x130 M12x140 M12x150 M12x160 M12x180 M12x200 M12x220 M12x240 M14x40 M14x45 M14x50 M14x55 M14x60 M14x65 M14x70 M14x80 M14x90 M14x100 M14x110 M14x120 M14x130 M14x140 M14x150 M14x160 M14x180 M14x200 M16x40 M16x45 M16x50 M16x55 M16x60 M16x65 M16x70 M16x80 M16x90 M16x100 M16x110 M16x120 M16x130 M16x140 M16x150 M16x160 M16x180 M16x200 M16x220 M16x240 M16x260 M16x280 M16x300 M18x50 M18x55 M18x60 M18x65 M18x70 M18x80 M18x90 M18x100 M18x110 M18x120 M18x130 M18x140 M18x150 M18x160 M18x180 M18x200 M20x50 M20x55 M20x60 M20x65 M20x70 M20x80 M20x90 M20x100 M20x110 M20x120 M20x130 M20x140 M20x150 M20x160 M20x180 M20x200 M20x220 M20x240 M20x260 M20x280 M20x300 M22x60 M22x65 M22x70 M22x80 M22x90 M22x100 M22x110 M22x120 M22x130 M22x140 M22x150 M22x160 M22x180 M22x200 M22x220 M22x240 M24x60 M24x65 M24x70 M24x80 M24x90 M24x100 M24x110 M24x120 M24x130 M24x140 M24x150 M24x160 M24x180 M24x200 M24x220 M24x240 M24x260 M24x280 M24x300 M27x70 M27x80 M27x90 M27x100 M27x110 M27x120 M27x130 M27x140 M27x150 M27x160 M27x180 M27x200 M27x220 M27x240 M30x80 M30x90 M30x100 M30x110 M30x120 M30x130 M30x140 M30x150 M30x160 M30x180 M30x200 M30x220 M30x240 M30x260 M30x280 M30x300 M33x80 M33x90 M33x100 M33x110 M33x120 M33x130 M33x140 M33x150 M33x160 M33x180 M33x200 M33x220 M33x240 M36x90 M36x100 M36x110 M36x120 M36x130 M36x140 M36x150 M36x160 M36x180 M36x200 M36x220 M36x240 M36x260 M36x280 M36x300 M42x100 M42x110 M42x120 M42x130 M42x140 M42x150 M42x160 M42x180 M42x200 M42x220 M42x240 M42x260 M42x280 M42x300 M48x120 M48x130 M48x140 M48x150 M48x160 M48x180 M48x200 M48x220 M48x240 M48x260 M48x280 M48x300

Using these STEP files in CAD

STEP AP214 format opens directly in SolidWorks, Inventor, Fusion, CATIA, NX, FreeCAD, and most CAD systems.
Per free-library convention, threads are not modeled (plain shank). These are for layout, clearance, and drawings — not fastening simulation.
All dimensions use the standard's nominal values. For tolerance-critical use, check the allowances in the spec table.

Hex Bolt View spec table →