M12 10.9 Grade Bolt and Nut Wedge Model

Description

M12 10.9 Grade Bolts and Nuts for Older Wedge Model

Length 60mm with flat head so wood does not catch on.

Internationally, mechanical stress is expressed in newtons per square area, in bolting N/mm2. Common practice overseas is to use the unit megapascal (MPa), which corresponds directly to N/mm2.
For example 1,200 N/mm2 = 1,200 MPa

An example using a hex bolt with property class 10.9

The Nominal tensile strength of a 10.9 bolt is calculated
10 x 100 = 1,000 N/mm2 (MPa)

The Yield stress ratio 9 x 10 = 90%

The Yield stress is therefore
90% of 1,000 = 900 N/mm2 (MPa)