ASTM A307

Mechanical and chemical requirements for grades A, B, and C sized 1/4 in to 4 in carbon steel bolts and studs (also referred to as THREADED ROD).


ASTM A307
Grades  
A Headed bolts, threaded rods, and bent bolts intended for general application
B Heavy hex bolts and studs intended for flanged joints in piping systems with cast iron flanges
C* Nonheaded anchor bolts, either bent or straight, intended for structural anchorage purposes. The end of a grade C anchor bolt intended t project from the concrete will be painted green for identification purposes. Permanent marking is a supplemental requirement. * As of August 2007 grade C has been replaced by specification F1554 grade 36. We will continue to supply grade C if required by the project
Mechanical Properties
Grade Tensile, ksi   Yield, min, ksi Elong %, min
A 60 min   n/a 18
B 60 - 100   n/a 18
C* 58 - 80   36 23
Recommended nuts and washers
Nuts       Washers
A307 Grades A & C*     A307 Grade B  
1/4 - 1-1/2   1-5/8 - 4 1/4/2004  
A563A Hex   A563A Heavy Hex A563A Heavy Hex F844