Class EngineeringFastenersIsoBeta

Gives the diameter of an ISO 273 clearance hole for a screw: close, normal or loose.

Example: M6, normal -> 6.6 millimetres

Gives an ISO 4032 hexagon nut: its width across flats and its height.

Example: M8 -> 13 across flats, 6.8 high, in millimetres

Gives an ISO 7089 plain washer: its inner and outer diameters and its thickness.

Example: M8 -> 8.4 inside, 16 outside, 1.6 thick, in millimetres

Gives an ISO 7090 washer, chamfered on the outside of one face: its inner and outer diameters, its thickness and its chamfer's height and width.

It shares the ISO 7089 washer's sizes and starts at M5. Example: M8 -> 8.4 inside, 16 outside, 1.6 thick, in millimetres

Gives the head of an ISO 4762 cap screw: its diameter and height, its hexagon recess, the threaded length and the DIN 974-1 counterbore that sinks it.

The counterbore is the head's height and half a millimetre deep. Example: M5 -> head 8.5 across and 5 high, a 4 mm recess, counterbore 10 across and 5.5 deep

Gives the head of an ISO 4014 or 4017 hexagon bolt and how much of its length ISO 4014 threads: the width across flats, the head's height and the threaded length.

length is in unit. Example: M8, 40 millimetres long -> 13 across flats, a 5.3 high head, 22 threaded

Gives a set screw with a hexagon recess by its size and point: the recess's size and least depth, and the point's diameter, length and angle, as ISO 4026 to 4029 give them.

A short screw gets a shallower recess, a short dog and a blunter cone. Example: M5 dog -> a 2.5 mm recess and a 3.5 mm dog