Comparison Chart for Screw Size, Inch Fractions, Decimals and Millimeters
| Inches | mm | Inches | mm | |
| Fractions | Decimals | Fractions | ||
| 0.0004 | 0.01 | 57/64 | 2.2.622 | |
| 0.004 | 0.1 | 23 | ||
| 0.01 | 0.25 | 29/32 | 23.019 |
Full Answer
What is the nominal diameter of a bolt?
NOMINAL DIAMETER (NOMINAL BOLT DIAMETER) The diameter equal to the external diameter of the threads or the overall diameter of the part. (Nominal diameter is more of a label than a size. For example, a bolt and nut may be described as being ½” diameter.
How do you measure the length of a bolt?
But for flat head bolts, the length includes the height of the bolt head and for dome head bolts the length is measured from the highest point on the curved head. The length of a metric bolt is measured and defined in exactly the same way as imperial bolts (fasteners). Check out the standard bolts size chart in metric or imperial below.
How do I find the nominal thread length of inch-series bolts?
Per ASME B18.2.1, the nominal thread length of inch-series bolts can be found by: where L is the total bolt length and d nom is the nominal bolt diameter. The following table of hex bolt head dimensions was adapted from ASME B18.6.3, Table 29, "Dimensions of Plain (Unslotted) and Slotted Regular and Large Hex Head Screws."
What is the size of a coarse thread bolt?
Coarse Thread Bolts NOM. DIA. DIAMETER mm DIAMETER inch NUT Size M68 68 2.6772 100 M72 72 2.8346 105 M76 76 2.9921 110 M80 80 3.1496 115 27 more rows ...
What size is a #8 bolt?
American Screw SizesTHREAD DIAMETERSizeNearest FractionMillimeter#51/83.1#69/643.3#85/324.28 more rows•May 25, 2022
What size bolt is between 1/4 and 5 16?
Metric / Standard Wrench Conversion ChartBolt DiameterMetricStandard1/8"8mm5/16"3/16"10mm3/8"1/4"11mm7/16"5/16"13mm1/2"39 more rows•Apr 9, 2020
What size is M22 in inches?
Tap sizeBasic major dia (mm)Basic major dia (inch)M22 x 2.522mm.8661M22 x 1.522mm.8661M24 x 324mm.9449M24 x 224mm.944924 more rows
What size is M10 in MM?
17 mm 8 mmStandard metric spanner and allen key sizes.SizeSpannerAllen KeyM610 mm5 mmM813 mm6 mmM1017 mm8 mmM1219 mm10 mm5 more rows•Jun 19, 2020
How do you read bolt sizes?
0:212:23How to Measure Screws & Bolts - US & Metric Sizing | Fasteners 101YouTubeStart of suggested clipEnd of suggested clipSo when you read a bolt that says quarter 20 by 2 that means quarter inch diameter 20 TPI that'sMoreSo when you read a bolt that says quarter 20 by 2 that means quarter inch diameter 20 TPI that's threads per inch which would be here.
What size is bigger 5/16 or 3 8?
For instance, 5/16 inches and 3/8 inches are two measurements on a ruler. In order to compare the two fractions, they must have a common denominator, 16. 3/8 is larger than 5/16.
What does M14 mean on a bolt?
Metric Bolt DiameterThread PitchMetric Bolt DiameterM6M14Coarse Thread Pitch (mm)1.02.0Fine Thread Pitch (mm).751.5Extra Fine Thread (mm)
What is M22 in Imperial?
M20-1.50. 7/8" M22. 3/4"-10. 3/4"-10.
Is M14 the same as 14mm?
M14 means it is metric with a 14mm outside diameter.
Does M10 mean 10mm?
If the size is M10 x 25, that would mean that the diameter is 10 mm.
What size is a 10mm bolt?
Metric Shoulder Bolt DimensionsShoulder Diameter (A)Thread (C)Head Diameter (E)6mm5mm x 0.810mm8mm6mm x 1.013mm10mm8mm x 1.2516mm12mm10mm x 1.518mm3 more rows
Is M6 or M8 bigger?
The size of a metric screw or bolt is specified as diameter, pitch and length, in millimeters (millimeters is abbreviated "mm"). For nuts, size will appear as diameter and pitch....Table 3.MetricClosest InchM6-1.01/4-28 (Larger)M7-1.01/4-28 (Smaller)M8-1.255/16-18 (Smaller)M10-1.53/8-16 (Smaller)16 more rows
What is the metric bolt size?
Metric bolts are referenced using “M” sizes, such as the M8 bolt size. The size of a metric bolt is specified using pitch, diameter, and length in millimeters. For example, in M8-1.0*20, the “M” means the Metric thread designation, the digit 8 refers to the Nominal diameter (in millimeters), 1.0 refers to the pitch, and 20 refers to the length. Sometimes, the pitch is omitted in the abbreviated format, such as M8-20, this means the bolt has a coarse thread. The bolt dimension can also be expressed in imperial units.
What is a bolt?
Bolts are a type of essential fastener that often assembled with nuts. Using a bolt with the right sizes is vital for jobs in various machinery and equipment. In this article, we’ll go through a complete guide of bolts, which involves bolts definition, types, dimensions explain, and the standard bolt sizes chart in metric and imperial.
Why are hex bolts used?
Hex bolts can be used for infrastructure that requires a strong fastener with high tensile strength properties, they can also be used in tight spaces with limited access because tools can access them from all angles, or fastening wood, steel, or other materials in bridges, buildings, and more construction projects.
What are hexagonal bolts made of?
Steel is one of the most common materials of bolts, but hex bolts may also be made with aluminum, copper, brass, titanium, or even plastic.
What is an anchor bolt?
Anchor bolt. With a threaded part in one end and non-threaded in another end, which can be made in L shape, Pin type, Wedge type, or other forms, often work with steel plates or stiffeners to connect structural and non-structural elements to the concrete, transfer tension forces and shear forces. Anchor bolts come in different types based on ...
What is the diameter of a M8 bolt?
The defined diameter of metric bolts is actually slightly larger than the actual diameter. So an M8 bolt would have a diameter that’s slightly under 8mm. 2.
What is an elevator bolt?
Elevator bolt. Similar to the carriage bolt but elevator bolt with a thin flat or countersunk head and a square undercut, used in conveyor system setups. The head diameter of elevator bolts is larger than other types, which can prevent the bolt from going through soft conveyor material.
What is pitch in bolts?
But it is easier to specify the components by a single size designation since the bolt and nut are mating components.) Pitch is the distance from the crest of one thread to the next or the distance from one thread groove to the next, measured from crest to crest. Pitch is also described as the number of threads per inch.
What is nominal diameter?
NOMINAL DIAMETER (NOMINAL BOLT DIAMETER) The diameter equal to the external diameter of the threads or the overall diameter of the part. (Nominal diameter is more of a label than a size. For example, a bolt and nut may be described as being ½” diameter.