3d bolt

3d grappling hook

3d threads

3d screw

bolt with nut 3d

3d mechanical part

Representation of springs; crossbows

Bearing ucfl 30 mm 3d

3d piece

2d hook

Barrette

Isometric views of parts

How to draw a thread in 6 steps mixing surfaces and solids

2d zip screws

3d bolt and spring

Flange design.

Hexagonal screw

3d bearings

3d nut

3d mechanical part

Views of a support and 3d model