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How is tensile strength of a metric bolt identified?
Many High Tensile bolts will have a number of raised strokes formed in the head of the bolt. Three or five are common and usually form a reverse triangle or reverse heptagon
Tightening torque for bolt size 12?
Torque is related to friction and diameter. torque usually is done to achieve a preload stress in the bolt of 50% of its ultimate strength For unlubricatd bolts, T= 0.2DP where D = diamter and P = bolt preload and T = torque Bolt preload stress = P/A where A is stress area of bolt #12 = 0.216 inch diameter, A = 0.024 For standard steel bolts of 80,000 psi strength, P = 1920/2 = 960 pounds T = 41 inch pounds For high strength bolts of 160,000 psi strength, T = 82 inch pounds If bolts are lubricated, use T = 0.15DP T = 31 in lbs standard and 62 inch pounds high strength
Materials that have a high tensile strength?
High strength tensile bolts are used for extreme projects the types of things you cannot risk falling apart. They are typically made out of steel.
Is bolt tensile strength in foot pounds or inch pounds?
Neither. Bolt tensile strength is in pounds per square inch. You are confusing torque with bolt strength. Typically a bolt will be torqued to stretch the bolt and preload it to about 50% of its strength. The relation between torque T and preload P is T = 0.15DP where D is bolt diameter(inch), T is inch pounds and P is pounds. Then stress is P/A where A is bolt area and this stress is 1/2 of strength. Note that torque in foot pounds is simply in lb/12, or 12 inch pounds = 1 ft lb
How do you attach a jet engine to a wing?
They are attached with high tensile strength bolts, some have three, some six. they bolt directly to mounts on the wing structure and cannot be seen as they and the wiring and fuel and hydraulic lines and inside the outer cowling.
How is tensile strength of a metric bolt identified?
Many High Tensile bolts will have a number of raised strokes formed in the head of the bolt. Three or five are common and usually form a reverse triangle or reverse heptagon
What does 10.9 refer to on a metric bolt?
10.9 on a metric bolt indicates the hardness (or load, tensile strength, and hardness) of the bolt. This is almost as high as they get and is about the equivalent to a grade 8 SAE or USS bolt. 8.8 is also a common metric hardness.
Tightening torque for bolt size 12?
Torque is related to friction and diameter. torque usually is done to achieve a preload stress in the bolt of 50% of its ultimate strength For unlubricatd bolts, T= 0.2DP where D = diamter and P = bolt preload and T = torque Bolt preload stress = P/A where A is stress area of bolt #12 = 0.216 inch diameter, A = 0.024 For standard steel bolts of 80,000 psi strength, P = 1920/2 = 960 pounds T = 41 inch pounds For high strength bolts of 160,000 psi strength, T = 82 inch pounds If bolts are lubricated, use T = 0.15DP T = 31 in lbs standard and 62 inch pounds high strength
What does number 8 mean on a bolt head?
It's a measure of the strength of the bolt. The strength is measured using what's called a grade. In this case, you have a grade 8 bolt. The higher the number, the stronger the bolt.
What happens if you torque head bolts more then supposed to?
You can over-torque a bolt and you may not know it. But you can damage the bolt in several ways that may be visible. 1. The threads will be stripped or sheared away. 2. The bolt will be permanently stretched so it is longer than it originally was. 3. The head of the bolt may be twisted or the corners of the bolt head rounded off. High strength bolts are marked on the head with symbols that indicate the strength of the bolt. You should know what type bolt you are using and its application. Just because it is made of Steel, that does not mean it will have sufficient strength for some applications.
What is number on the head of a bolt mean?
bolt strength markings. Numbers represent metric threads and slashes represent standard threads (the greater the number/slashes, the greater the strength of the bolt.
Materials that have a high tensile strength?
High strength tensile bolts are used for extreme projects the types of things you cannot risk falling apart. They are typically made out of steel.
Is bolt tensile strength in foot pounds or inch pounds?
Neither. Bolt tensile strength is in pounds per square inch. You are confusing torque with bolt strength. Typically a bolt will be torqued to stretch the bolt and preload it to about 50% of its strength. The relation between torque T and preload P is T = 0.15DP where D is bolt diameter(inch), T is inch pounds and P is pounds. Then stress is P/A where A is bolt area and this stress is 1/2 of strength. Note that torque in foot pounds is simply in lb/12, or 12 inch pounds = 1 ft lb
What super powers does Bolt have?
Bolt has "laser vision, super strength, the super bark, and speed"
What is the purpose of a bolt action rifle?
Earlier rifle designs did not have adequate strength for high powered cartridges. The bolt action is a very strong action, and is also a very accurate rifle. Bolt action rifles are used for hunting, target shooting, and for military sniper rifles.
What is Zeus' mytholigy symbol?
The Thunder Bolt. A sign for strength.
What is the Ultimate strength of 12.9 tensile bolt?
1220 MPa
