whitworth thread

Gear arm – technical drawing

Barrette

flange and bolts

3d mechanical part

Piston

Views of a support and 3d model

Screws – bolts – nails

Representation and designation of metric threads

2d zip screws

hex bolts

Structural bolts of different sizes

Flange design.

3d piece

3d bolt and spring

3d screw

3d nut

simple 3d model

3d object – dimension

Plans of a piston and a connecting rod of an engine

Orthogonal views of a skp piece