BS 4439:1969

Dimensions and tolerances for screwed studs with ISO metric threads in diameters from 3 mm to 39 mm inclusive, intended for general purposes. Mechanical properties are given only in respect of carbon or alloy steel screwed studs which are not being used for special applications, such as those requiring weldability or corrosion resistance. Dimensional requirements given also apply to non-ferrous and stainless steel screwed studs. Forms a parallel metric standard to BS 2693:Part 1.Cross References:BS 18BS 21BS 84BS 131:Part 3BS 240:Part 1Supplement No. 1 to BS 350:Part 2BS 427:Part 1BS 891:Part 1BS 1580BS 2693:Part 1BS 2693:Part 2BS 3382BS 3580BS 3643:Part 1BS 3643:Part 2BS 3763PD 5686