What is DIN 6921 Partial thread
These bolts are sometimes called Frame bolts. Hex heads are six sided for use with a wrench. Meets DIN 6921 (1983)
Bolt and nut corrosion caps,VIC bolt corrosion caps,ECTFE bolt covers
© 2018 Wenzhou Hongri Technology CO.,LTD. All Rights Reserved. http://www.nutcaps.net/ Main products： bolt and nut corrossion caps | VIC bolt corrossion caps | ECTFE bolt covers
