What size is a 1/2 bolt?
Heavy Hex Bolt Dimensions
Bolt Diameter | D | F |
---|---|---|
Body Diameter | Width Across Flats | |
1/2 | 0.515 | 0.875 |
5/8 | 0.642 | 1.062 |
3/4 | 0.768 | 1.250 |
What size head does a 1/2 inch bolt have?
Hex Bolt Head Size Chart
Diameter | Head Size |
---|---|
1/2″ | 3/4″ |
9/16″ | 13/16″ |
5/8″ | 15/16″ |
3/4″ | 1 1/8″ |
What size nut goes on a 1/2 inch bolt?

US Nut Size Table
Size | Diameter* | |
---|---|---|
Hex Nut | Machine Screw Nut | |
1/2″ | 3/4″ | – |
9/16″ | 7/8″ | – |
5/8″ | 15/16″ | – |
What are standard bolt sizes?
US Standard Thread Length for Bolts
Bolt Diameter | Standard Thread Length (in.) * | |
---|---|---|
Bolts 6 inches and shorter | Bolts longer than 6 inches | |
1/4″ | 3/4″ | 1″ |
5/16″ | 7/8″ | 1-1/8″ |
3/8″ | 1″ | 1-1/4″ |
How much torque does a 1/2 inch bolt have?
US Recommended Bolt Torque

Size | Recommended Torque | |
---|---|---|
Grade 2 | 18-8 S/S | |
1/2″ | 37 | 45 |
9/16″ | 53 | 63 |
5/8″ | 73 | 104 |
What is a long bolt?
A long-bolt or through-bolt engine is an internal combustion piston engine where, following usual practice, the cylinder head is held down by bolts or studs. Conventionally the cylinder head is bolted to the cylinder block and the crankshaft main bearings are in turn bolted to the crankcase by separate bolts.
What size is 17mm bolt?
Size Chart
Bolt size | Size | Tolerance |
---|---|---|
5/16″BSW | 15.29 | |
7/16″UNF | 5/8″ | 15.92 |
16mm | 16.05 | |
M10 | 17mm | 17.05 |
What size is M18 bolt?
Dimensions for DIN931 Hex Head Bolt
Diameter (d) | Pitch | Across Flats (s) |
---|---|---|
M16 | 2mm | 24mm |
M18 | 2.5mm | 27mm |
M20 | 2.5mm | 30mm |
M22 | 2.5mm | 32mm |
What is M in bolt size?
The letter ‘M’ indicates that this bolt uses a metric thread. The number ‘8’ refers to the nominal diameter of the bolt shaft in millimeters. The number 1.0 is the thread pitch of the bolt, which is the distance between threads, in millimeters. And the final figure, 20, is the length in millimeters.
What are bolt grades?
The grade of a bolt determines the maximum amount of stress (tensile strength) that the bolt can handle. Tensile strength is the amount of pull the bolt can withstand before breaking. The SAE marking system uses raised dashes on the bolt head to indicate strength.
How is bolt torque required?
DETERMINING TORQUE The general equation for bolt load based on applied torque is T = KFiDb where K = torque coefficient. K is a function of the coefficients of friction and collar friction in the joint, and these are based on variables such as surface finish, coatings, and so on.
How many threads are in a inch?
In the inch series, it is the number of complete threads per inch (if you need to know the pitch of an inch fastener, use the chart below or divide 1 by the number of threads per inch)….Table 1.
Threads per Inch | Pitch (inches) | Pitch (mm) |
---|---|---|
80 | 0.0125 | 0.318 |
72 | 0.0139 | 0.353 |
56 | 0.0179 | 0.454 |
48 | 0.0208 | 0.529 |