Registered. Is there a recommended grade for shock bolts? Too weak and they will bend easily, and too strong (like grade 8) and it might cause catastrofic damage to shock eyelets and mounts on harsh landings.
Are Grade 8 bolts Good for suspension?
Grade 5 works better in shear situations. Grade 8 works better in pull situations. The 5 will bend in shear before it breaks, 8 in shear will snap.
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.
Are Grade 8 bolts better?
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.
Are Grade 8 bolts or Grade 5 shear easier?
There exists an often quoted myth, that Grade 5 bolts are better in shear than Grade 8 since they will bend before breaking. Not true. Shear strength of alloy steel is approximately 60% of its ultimate tensile strength. … The Grade 5 bolt will therefore always fail first whether in tension or shear.
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.
How much stronger is a Grade 8 bolt than a Grade 5?
Grade 8 Bolts
A grade 8 bolt is the highest grade SAE bolt. Grade 8 bolts have a minimum tensile strength of 150,000 PSI. As a comparison, the ASTM A325 bolt is roughly equivalent to the SAE grade 5. A grade 8 bolt would be one that meets ASTM A490 standards.
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 steel bolts
Grade 8.8 high tensile steel is often referred to as the structural grade for bolts. It is the most common form of high tensile material and is usually stocked in plain finish or zinc.
How hard is it to break a Grade 8 bolt?
The tensile strength of a grade 8 bolt is 150,000 pounds per square inch. A properly designed bolted connection will be able to withstand far more than the expected maximum stress to which it will be subjected while it is in service. …
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 Grade 8 bolts brittle?
Registered. The grade 8 will have a higher tensile strength but it’s more brittle and will snap before it bends.
Is stainless steel stronger than Grade 8 bolts?
Stainless Steel Grades & Strength
Stainless commonly comes in grades 18.8 (304) or T316. Stainless steel bolts are rated for corrosion resistance. … 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 grade bolt has the strongest shear strength?
12.9 Bolt Shear Capacity
- 12.9 Bolts. A 12.9 bolt is one of the highest grade of bolts produced. Known for their high tensile strength, they are built with both hex and Torx heads and are available in zinc or chrome finishes. …
- 12.9 Shear Strength. The minimum tensile strength of a 12.9 bolt is 1220 MPa.
Can you cut Grade 8 bolts?
Grade-8 bolts are difficult to cut, but can be done with the use of a high-speed cutoff wheel. … Put your safety glasses on and install the diamond cut-off wheel to the Dremel tool. Mark the bolt where you want to cut it and run a nut onto the threads of the bolt, past where you will cut.