Astm A307a -
ASTM A307 is the standard specification for carbon steel bolts, studs, and threaded rods with a tensile strength of 60,000 psi. It is the most common standard for general-purpose fasteners.
Intended for general applications, including carriage bolts and basic structural connections.
This grade, which covered unheaded anchor bolts, was discontinued in 2007 and replaced by the ASTM F1554 Grade 36 specification . Mechanical Properties astm a307a
Specifically designed for flanged joints in piping systems with cast iron flanges, offering a tensile strength range of 60–100 ksi.
When you need a bolt that will bend before it breaks, strip before it cracks, and cost next to nothing—spec . ASTM A307 is the standard specification for carbon
Because ASTM A307A is a "low carbon" steel fastener, it is ductile and easy to work with, but it is not meant for high-stress structural connections (like major bridge splices). You will typically find A307A used in:
ASTM A307 Grade A is the reliable workhorse of the fastener world. It strikes the perfect balance between strength, ductility, and cost for general construction needs. This grade, which covered unheaded anchor bolts, was
The ASTM A307 standard covers carbon steel bolts and studs ranging from . While the specification originally included three grades, the industry primarily uses Grades A and B today:
ASTM A307 Grade A bolts are manufactured from (typically 1018 or similar). There is no mandatory heat treatment, which keeps the manufacturing process simple and the product inexpensive.
Have a project requiring A307 Grade A bolts? Always verify the latest revision of the ASTM standard (currently A307-21) and consult with a licensed engineer for critical applications.
Understanding ASTM A307 Grade A: The Standard for Low-Carbon Steel Fasteners