Hex Head B7 Bolts And Screws PRODUCT: Hex Head A193 Gr. B7 Bolts AndScrews SIZE: M12 to M42 (Metric) / 1/2" to 2" (Inch) PROPERTY CLASS: Gr.B7 DIMENSIONAL STANDARD: IS: 1364, ISO 4014, ISO 4017 and DIN 931/933. MATERIAL STANDARD: ASTM 193 GRADE B7 We are leading Manufacturer of "Hex Head B7 Bolts And Screws" in vadodara, Gujarat, India. We also supply in Ahmedabad, Surat, Rajkot, Vapi, Bharuch, Ankleshwar, Umergaom and all across Gujarat.