Color codes Threaded Rods
Why have the ends of threaded rods colors? This is to serve a quick orientation on the steel grade their made of. According standard DIN976-1 page 11 chapter 6. Tabel 3 and ASTM F1554 anchor rods there is a approved color marking for threaded rods.
Be aware, some companies change the color by own specification which have nothing to do with the standard. This is often used in a coloring system for pricing. Manufacturers color their rods according this standard.
Summary:
DIN976-1 (DIN975)
- 4.8 none
- 4.8* Orange RAL2009
- 5.6 Brown RAL8015
- 5.8 Blue RAL5010
- 8.8 Yellow RAL1023
- 8.8* Purple RAL4006
- 10.9 White RAL1013
- 12.9 Black RAL9017
- A2 Green RAL6024
- A4 Red RAL3000
*Undersized thread, common used material size before HDG treatment.
ASTM F1554
- Grade 36 Marking PB AB36 BLUE
- Grade 55 Marking PB AB55 YELLOW
- Grade 105 Marking PB AB105 RED
