How strong is a 307A bolt?
60,000
Bolt Grade Markings and Strength Chart
| Head Marking | Grade and Material | Mechanical Properties |
|---|---|---|
| Min. Tensile Strength (psi) | ||
| 307A Low carbon steel | 60,000 | |
| No Markings | Grade 2 Low or medium carbon steel | 74,000 |
| 60,000 |
How strong is Grade A307?
60,000 psi
Governing StandardsA307 Covers the mechanical and material requirements for inch series fasteners in diameters from 1/4″ through 4″, made of carbon steel having a minimum tensile strength of 60,000 psi.
What grade is A307 steel?
ASTM A307 Grade A Carbon Steel Bolting with minimum tensile of 60 ksi. 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.
Is A307 a Grade 5?
A307 is basically an ungraded bolt and A325 is grade 5 or so.
What grade bolt is the strongest?
Grade 9 structural bolts, also known as grade 9 hex cap screws, are one the strongest structural bolts that can be used today. While the typical grade 8 bolt has a tensile strength of 150,000 PSI, a grade 9 bolt has a tensile strength of 180,000PSI.
Are stainless bolts stronger than Grade 8?
Stainless steel bolts are rated for corrosion resistance. Bolt strength is rated in PSI (pounds per square inch). A stainless steel bolt has the same PSI rating as a grade 5 bolt (125,000 PSI). A grade 8 bolt has a stronger rating with a PSI of 150,000.
What is 307A bolt grade?
307A bolts are a Grade 1 equivalent that is used in low-strength application. It has lower hardness and tensile requirement than grade 2 bolts. It is generally used in low-pressure, standard or normal temperature applications and is made of low carbon steel.
Are A307 bolts high strength?
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 does 307A mean on a bolt?
What grade is a hardened bolt?
Grade 5 bolts are case hardened, meaning the bolt has been heated enough to hardened the outside of the bolt but not enough to harden the inside portion. Grade 5 bolts are identified by 3 evenly spaced radial lines on the head.
What is the strongest metal for bolts?
The strongest commercial-quality bolt is grade 8, marked by six raised dashes; its medium-carbon alloy steel has been quenched and tempered to achieve a tensile strength of 150,000 psi.
What size is a 307A bolt?
Specifications for this item
| Brand Name | RAW PRODUCTS CORP |
|---|---|
| Size | 5/16″-18 x 1-1/2″ |
| Specification Met | Asme B18.2.1 |
| Style | Hex Head Bolt |
| Thread Coverage | Coarse |
What are the strength of bolt grades?
Stainless commonly comes in grades 18.8 (304) or T316. Stainless steel bolts are rated for corrosion resistance. Bolt strength is rated in PSI (pounds per square inch). A stainless steel bolt has the same PSI rating as a grade 5 bolt (125,000 PSI). A grade 8 bolt has a stronger rating with a PSI of 150,000.
What are the grades of bolts?
A. The grade of a bolt indicates the tensile strength of the steel. The higher the number the harder it is. The most common grades are 2, 5 and 8. Grade 2 bolts are made out of mild steel and have no marks on the head, except maybe ‘A 307A’ . Grade 5 bolts are a medium hard bolt and have 3 lines on the head.
What is A307 bolt grade?
ASTM A307 is the most common of all bolt specifications and is often manufactured using A36 round bar. The fasteners are designated by “Grade” denoting tensile strength and intended use, as follows: Grade A: Bolts and studs having a minimum tensile strength of 60 ksi and intended for general applications.
What are the metric bolt grades?
There are three common grades for SAE (fractional) and four common grades for metric fasteners. These are 2, 5, and 8 for SAE, and 5.8, 8.8, 10.9, and 12.9 for metric. Each has specific strengths. These bolts are the common shiny silver zinc bolts that are used for general purposes.