looking for material type for DIN 1804 5W

[jessmo]

print calls for the nut to be made to DIN 1804 and the material is listed as steel( 5W). I don't know what the 5W is. I would be greatfull for any help

thanks

 

[TVP]

This is an ancient DIN standard, last changed in 1971. The 5 means class 5 according to DIN 267 Part 4, which is now obsolete, having been superceded by DIN EN 20898-2 (same as ISO 898-2). The W means unhardened. Just about steel can be used to meet the property requirements of ISO 898-2 class 5. The following link has additional information:

http://www.bossard.com/techinfo/en/extdoc/TT_09-09.pdf

 

[jessmo]

thanks. this helps a bunch.