How do you determine torque for tightening bolts?
The basic formula T = K x D x P stated earlier takes these factors into account and provides users with a starting point for establishing an initial target tightening torque.
What is the torque for a M10 bolt?
Metric Recommended Bolt Torque
| Bolt Diameter (mm) | Recommended Torque (Nm) | |
|---|---|---|
| Class 8.8 | Class 10.9 | |
| 10 | 55 | 75 |
| 12 | 100 | 135 |
| 14 | 160 | 215 |
What is K factor in bolt torque?
The K factor is used to account for the energy lost to friction and other factors during the tightening process. The generally accepted K factors for this calculation are: 0.20 for assemblies with dry threads (no lubrication) 0.15 for assemblies with lubricated threads.
What is an M10 screw?
(69 products) M10 bolts are a highly adaptable and strong fixing, which can be used in many applications within construction and at home. They are adjusted with either a spanner or wrench due to their hexagonal head and have a full or half threaded stem, so they can be used with a nut or in a tapered hole.
What is K on a torque chart?
The K Factor is an experimentally determined constant that relates the torque applied to the load induced in the fastener. This factor is affected by the condition of the fastener, the lubricant used and the condition of the flange.
How do you calculate K factor?
To calculate the K-factor:
- Multiply the bending allowance by 180 .
- Divide the resultant by pi and the bend angle.
- Subtract the inner radius from the resulting numeral.
- Divide the result by the material thickness to obtain the K-factor.
How do you calculate bolt load?
Tensile strength is the maximum tension-applied load the fastener can support prior to fracture. The tensile load a fastener can withstand is determined by the formula P = St x As.
What size drill bit do I need for an M10 bolt?
We use a Fischer type M10 shield anchor. These are specified using a high-grade steel with a corrosion resistant zinc plated finish. The shield requires a 16mm hole to be drilled that is dust and debris free.
What is the ASTM grade for bolting torque?
BOLTING TORQUE TABLE 1A – COLD SERVICE ASTM A193 AND ASTM A320 GRADE B8, CL2 STUD BOLTS BOLTING TORQUE TABLE 2 – ASTM 193 GRADE B7 AND ASTM 193 GRADE B16 STUD BOLTS
How do you calculate the torque of a B7 clamp?
Clamp load calculated as 75% of the yield strength for the B7 specified in ASTM A193. Torque values calculated from formula T=KDF, where Coatings such as Teflon or Xylan offer extremely low coefficients of friction. Often we will experience K values around 0.12 or even lower. = 0.15 for “lubricated” conditions and K = 0.20 for “dry” conditions
What is the best torque for a bolt torque converter?
US Recommended Bolt Torque Size Recommended Torque Recommended Torque Recommended Torque Recommended Torque Grade 2 Grade 5 Grade 8 18-8 S/S Brass Coarse Fine Coarse Fine Fine #4* – – – 5.2 #6* – – – 9.6
How to determine the torque of a bolt and nut assembly?
In order to determine the torque value of a bolt and nut assembly based on just the material strength of the bolt itself, the materials of the assembly should follow this guideline… ultimate tensile strength of the bolt (the material with the external thread).