Nomenclature

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Nomenclature for screws

Nomenclature: Screw length_(LDu) x thread_diameter_(LDu) {head type} {slot type}

At present we have the following {head type}:
- Countersunk
- Pan
- Flat
- Beveled
Screw length is measured from the flat underside of the head, except for Countersunk when it is measured from the flat top surface.

At present we have the following {slot type}:
- Slotted
- Cruciform
- Triangular

Examples:
u9000.dat - ~Screw 44.5 x  5 Countersunk Slotted
u9013.dat - ~Screw 12 x  6 Pan Cruciform
u9021.dat - ~Screw  6 x  5 Flat Slotted
u9022.dat - ~Screw  4 x  4 Beveled Triangular
--Mikeheide 09:56, 10 July 2011 (EDT)

Nomenclature for tyres

Nomenclature: width_(mm) / profile_as_%age_of_width x rim_diameter_(mm) [optional qualifier]

Please note that this dimensions has to be in mm!

This text needs to be extended with some information about measurepoints for the dimension.
Original LUGNET discussion is at http://news.lugnet.com/cad/?n=13760

Examples:
50951.dat - Tyre  6/ 30 x 11
87697.dat - Tyre 12/ 40 x 11 Wide with Center Band
u9131.dat - Tyre  7.2/ 45 x 8.8
--Mikeheide 10:11, 10 July 2011 (EDT)