2 * Simple M8 nut or 5/16 in imperial variant.
3 * also can be used for other screwing things :-D
13 * @category Nuts&bolts
18 * @name M8 washer mudguard
20 * @category Nuts&bolts
27 * @category Nuts&bolts
34 * @category Nuts&bolts
42 * @category Nuts&bolts
49 * @category Nuts&bolts
56 * @category Nuts&bolts
63 * @category Nuts&bolts
68 * @name M3 10mm screw with hex head
70 * @category Nuts&bolts
77 * @category Nuts&bolts
82 * @name M3 10mm screw with flat head
84 * @category Nuts&bolts
91 * @category Nuts&bolts
98 * @category Nuts&bolts
103 * @name M3 20mm screw with hex head
105 * @category Nuts&bolts
110 * @name M3 25mm screw
112 * @category Nuts&bolts
117 * @name M3 25mm screw with HEX head
119 * @category Nuts&bolts
124 * @name M3 15mm screw with HEX head
126 * @category Nuts&bolts
131 * @name M4 25mm screw
133 * @category Nuts&bolts
138 * 608 Bearing. When you have troubles finding it, try your local skateshop, because its used in skateboards.
139 * @name 608 skate bearing
141 * @image common/608.jpg
142 * @category Nuts&bolts
147 * @name NEMA17 stepper motor