Hex. Head Bolt M 20 x 100 to IS: 1364 ( Part- I )/ 2002, IS: 1367 )/ 2002 ( Part- III ), Property Clause- 10. 9 CE & Coating as per MDTS- 057. Grade & Make should be clearly embossed at suitable location of Material ( on Peripheral face of Bolt ) for easy traceability & verification.