What is bs 3692 grade?

Answer 1

BS 3692 is not a grade...it refers to the name of British standard BS 3692 which contains the specifications of ISO metric precision hexagon bolts, screws and nuts.

In this standard and other BS bolt standards, bolts are categorized into groups called grades such as grade 4.6 & 8.8...

Example:

Grade 4.6 :

The first number (4) refers to 0.01 of minimum tensile strength of bolt (4/0.01=400n/mm2).

This second number ( 6) refers to 10 times of the ratio between minimum yield strength and minimum tensile strength

(yield strength/400=0.6 hence, yield strength =400X0.6=240)

Hope this helps...

Mohammed