Wood Screw diameters
Imperial Machine Screws
Wire Sizes
Mechanical - gear pitch or module
Mechanical - Number Drill Sizes
Mechanical - RC Brushless DC Motor sizes


1/2-10 acme threaded rod at grainger
Linear Rail - MGN7 4.8 mm tall
Linear Rail – MGN9 8 mm tall
Linear Rail – MGN12 8 mm tall
Linear Rail – MGN15 10 mm tall
Linear Rail - HGR15 15 mm tall

Designation	rail diameter	height of rail center	Bearing	height from center of rail to top of bearing
SBR 12	12
SBR 16	16	25	SBR16UU	20
SBR 20	20	27
SBR 25	25	33
SBR 30	30	37
SBR 35	35	43
SBR 40	40	48
SBR 50	50	62

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Servocity gears
hiwin motion control systems