Best answer: What grade should shock bolts be?

Registered. You want hard bolts, grade 8, and if you keep them tight they won’t damage your frame.

Are shock bolts Grade 8?

They aren’t cheap (about $23 per set), but they are pretty, and don’t rust! I try to use stainless whenever I start “replacing” bolts… but shock bolts I would definetely use grade 8. You can use chrome covers or toppers if you need the chrome.

Is Grade 8 or Grade 5 stronger?

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 is stronger Grade 2 or Grade 5 bolts?

The tensile strength refers to how much pressure it can withstand with a Grade 2 bolt having a 74,000 psi and a Grade 5 bolt having a 120,000 psi. Commercial-grade 8 bolts are the strongest option available. They’re made from medium carbon alloy steel and have markings that include six raised dashes.

Which is stronger a Grade 2 bolt or a Grade 8 bolt?

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.

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What is a Grade 8 fastener?

A grade 8 bolt is stronger than the more commonly used grade 5. It is made of alloy steel and has six radial lines on the top of the bolt head. Grade 8 bolts have a tensile strength of 150,000 pounds per square inch.

What grade is high tensile bolts?

High tensile bolts are usually graded 10.9 and 12.9 (these are popular varieties) and you can match a grade 10 nut and grade 12 nut with these units respectively. You can, however, replace lower grade nuts with higher grade ones without fear of breakage and thread stripping.

How hard is a Grade 5 bolt?

Grade 5 Bolts and fasteners are made of medium strength carbon steel and are specified under the Society of Automotive Engineers (SAE). … These bolts are heat treated in a controlled atmosphere from 1⁄4 in. through 1-1/2 in. with a minimum tensile strength of 120,000 psi in diameters through 1 in.

Will Grade 8 bolts rust?

Grade 8 Steel Bolts

Grade 8 bolts have 6 evenly spaced radial lines on the head.” Unlike stainless steel, which is highly resistant to corrosion, steel, however reinforced, will oxidize over time and rust. Grade 8 bolts that are not galvanized or plated with yellow zinc, however, are cheaper.

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.

Is Grade 8 or 12.9 stronger?

Special markings on screw heads and nuts identify the fastener’s grade. Replace a graded fastener with same or higher grade (don’t replace a Grade 8 fastener with a Grade 5 or 2).

Table 1.

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Grade/Class Strength
Metric Class 12.9 The highest metric class for strength, it exceeds Grade 8.

How much weight can a Grade 5 bolt hold?

Proof Load

Nom Bolt Size (in) Grade
2 5
5/16 2900 4450
3/8 4250 6600
7/16 5850 9050

Is grade A the same as Grade 2?

A2. A type of the most common stainless steel grade. It is comparable in strength to grade 2 materials, yet slightly weaker and easy to weld.

What grade is the strongest bolt?

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.

What does 8.8 mean on a bolt head?

So, in English, a PC 8.8 bolt is a bolt with a nominal tensile strength of 800 MPa and a nominal yield strength that is 80% of the bolt’s nominal tensile strength, or 640 MPa.

Is Grade 8 or 10.9 stronger?

Class 10.9 is stronger than class 8.8. It is commonly found in high strength automotive applications. Class 10.9 is similar to grade 8. A low carbon steel for general use.