Heavy Hex Bolts
The head of a heavy hex bolt is wider and thicker than that of a hex bolt.
A heavy hex bolt goes with a heavy hex nut.
Heavy Hex Bolt 
Heavy Hex Bolt
DIMENSIONS AND THREADS WILL BE IN METRIC SERIES AS PER RESPECTIVELY. Europe and Asia use the Metric System but Recently, metric bolts have become more popular in the United States & in Gulf countries because of international businesses that need parts that are compatible with products from other countries.
BOLT SPECIFICATIONS
ASTM A325M , A490M , A193M, BS 4395 , DIN 6914 & EN ISO 14399
THREAD SPECIFICATIONS
ANSI /ASME B1.13M – 6g
PRODUCT RANGE
Size range as covered in the above standards
HEAD MARMING & SUITABLE NUTS
BOLT SPEC
ASTM A325M TY-1
ASTM A490M TY-1
ASTM A193M
BS 4395 PT-1
BS 4395 PT-2
DIN 6914 CL-10.9
EN ISO 14399.
HEAD MARKING
SANF 8S A325M
SANF HV 10.9
SANF + CLASS
SANF + ISOM +3LINES
SANF + ISOM +10.9
SANF HV 10.9
SANF HV 10.9
SUITABLE NUTS
ASTM A563M CL-10S/GR-DH, A194M GR-2H
ASTM A563M CL-10S/GR-DH, A194M GR-2H
ASTM A563M CL-10S/GR-DH, A194M GR-2H
BS 4395 PT- 1
BS 4395 PT-2
DIN 6915 CL-10
EN ISO 14399.
DIMENSIONS AND THREADS OF THESE BOLTS WILL BE AS PER RESPECTIVELY
Various specifications includes ASTM A307, A325, A490
THREAD SPECIFICATIONS
ASTM A307 GR – B
Standard specifications for carbon steel bolts & stud with 60,000 psi strength.
HEAVY HEX STRUCTURAL TYPE BOLTS
ASTM A325
Standard specifications for structural bolts ,steel,heat treated ,120/105 ksi minimum tensile strength.
ASTM A490
Standard specifications for structural bolts ,Alloy steel, heat treated ,150 ksi minimum tensile strength. These high strength bolts are designed to be used structural connections and have shorter thread lengths which are compliant with the standards from the American Institute of Steel Construction (AISC), the American Association of State Highway and Transportation Officials (AASHTO )the American Society for Testing Materials (ASTM).NOTE
ASTM A325 was officially withdrawn in 2016 and replaced by ASTM F3125,The F3125 specification is a consolidation and replacement of six ASTM standards, including; A325, A325M, A490, A490M, F1852, and F2280.Information on A325 is for reference and informative purpose only
PRODUCT RANGE
Size range as mentioned in the above standards.
HEAD MARKING
SPECIFICATION
ASTM A307 GR-A,B,C
ASTM A325 TY-1
ASTM A490 TY-1
HEAD MARKING
SANF + GRADE
SANF +A325
SANF +A490
SUITABLE NUTS
A563
A194 GR-2H
A194 GR-2H