The ASTM A307 specification covers carbon steel bolts and studs ranging from 1/4″ through 4″ diameter. This is your everyday, run of the mill bolt specification often manufactured using A36 round bar. There are three grades A, B, and C* which denote tensile strength, configuration, and application.
What is a A307 bolt?
ASTM A307 Grade A is grade specification in carbon steel bolting for use in general purpose application. This grade covers hex headed bolts, stud bolts, threaded rods or any other bolting having a minimum tensile strength of 60 ksi.
What size bolt is 307A?
These 307A grade zinc plated bolts are 5/16-18 thread and are 4″ in length with a full length thread.
Is A307 a high strength bolt?
ASTM A307 bolts are not assigned to a group since they are not considered to be high strength bolts. The ultimate tensile strengths for A325 and A490 bolts are 120 ksi and 150 ksi respectively.
What is Grade A307 steel?
ASTM A307 Grade A is a standard material specification for medium strength carbon steel fasteners specially bolts, studs and threaded rods for general purpose applications. Grade A is a heat treated carbon steel bolting material with minimum tensile requirement of 60 ksi and hardness range from 121 to 241 BHN.
Are A307 bolts galvanized?
A Hex Bolt (named for its six-sided head), is the industry standard for fasteners with forged heads. … Each of our A307 Hex Bolts is made from premium low carbon steel and is galvanized to give it the needed protection against corrosion, making it last longer that its non-galvanized counterpart.
Is 307A bolt stainless steel?
Stainless steel 307a hex bolt. Our Competitive Advantage:Non-Standard and Customized FastenersPrecise Screws.
Is A307 a Grade 5?
A307 is basically an ungraded bolt and A325 is grade 5 or so.
Is A307 a Grade 2?
You will often hear about A307 and Grade 2 bolts as being equivalent. While they are small differences they each are referred to as “low carbon” fasteners. A307 is an ASTM (industrial) spec, while Grade 2 is an SAE J429 Grade 2 (automotive) spec.
What is the yield strength of A307 bolts?
Strength Requirements by Grade
|Specification||Material and Treatment||Mechanical Properties|
|Yield Strength Min (ksi)|
|A307 Grade C||Low or Medium Carbon Steel||36|
|F1554 Grade 36||Low or Medium Carbon Steel||36|
|F1554 Grade 55||Low or Medium Carbon Steel||55|
What nuts go with A307 bolts?
Hex nuts (also referred to as finished hex nuts) are available in ASTM A563-A and compatible with low carbon steel bolts such as ASTM A307, ASTM F1554 grade 36, SAE grade 2, and AASHTO M183.
What is considered a high strength bolt?
Most people in the industry would interpret the phrase “high strength” to refer to any bolt that has been quenched and tempered (heat treated) to develop its strength. … Both SAE J429 Grades 5 and 8 have been quenched and tempered and would be considered “high strength” by most.
Is A307 a structural bolt?
Nonheaded anchor bolts, either bent or straight, intended for structural anchorage purposes.
What does F1554 mean?
F1554 is an ASTM specification for cast in place anchor bolts. It was established to clarify material properties for anchor rods used in concrete. Prior to it’s creation, concrete anchor bolts were most commonly specified using the generic round bar specification A36 or the headed hex bolt specification A307.
What does 307B mean on a bolt?
307B. ASTM A307 Grade B Bolts, screws, studs (flanged joints) Low or medium carbon steel.