What grade are allen head bolts?

Typical bolts are supplied as grade 5.8, 8.8, or 10.9. Socket cap screws are often available in grade 12.9, meaning it has a UTS of 1200 MPa and will yield at 90% of this (1080 MPa).

What are the grades for bolts?

There are several grades of bolts but the three common grades for SAE are 2, 5 and 8. The common class (grades) for metric are 5.8, 8.8, 10.9 and 12.9. Each grade has a specific bolt strength. No matter the system used to grade the bolts, the higher number means the stronger the bolt.

What is the difference between Grade 5 and Grade 8 bolts?

Grade 8 bolts have been hardened more than grade 5 bolts. Thus they are stronger and are used in demanding applications such as automotive suspensions. Grade 8 bolts have 6 evenly spaced radial lines on the head.

What is meant by 8.8 grade bolt?

Grade 8.8 Bolts are manufactured using medium carbon steel that has been quenched and tempered. Used in railroad equipment, motors, engines and processing equipment, grade 8.8 bolts exhibit good tensile strength and perform well in most environments.

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 stronger Grade 5 or grade 8 bolts?

Grade 8 bolts have been hardened more than grade 5 bolts. Thus they are stronger and are used in demanding applications such as automotive suspensions.

What are the different grades and standards of Allen bolt?

There are different standards and grades such as the M6 Allen Bolt Stainless Steel and others. The Allen Key Bolt Stainless Steel is useful in places where a lengthy screw driver cannot be applied.

What is the highest grade of bolt?

The minimum ultimate tensile strength of the Grade 12.9 Bolt is about 1242 Mpa or 180,000 PSI, which makes them the highest grade of bolts. 12.9 Allen Bolt is a bolt with a hexagonal socket in its head that is designed to be used with an Allen wrench to drive them into material and secure them into a structure.

What are the different grades of allen keys?

There are different standards and grades such as the M6 Allen Bolt Stainless Steel and others. The Allen Key Bolt Stainless Steel is useful in places where a lengthy screw driver cannot be applied. The Allen keys facilitate a narrow space operation with the bent and extended key handles to operate away from the narrow space.

What is the tensile strength of a bolt?

Tensile strength is the amount of pull the bolt can withstand before breaking. The method used for tightening the bolt is also dependent upon the grade of the bolt. The grades are indicated on top of the bolts as raised numbers or dashes.