What are the different sizes of bolts?

DIN Standard 931 Hex Bolt Size Chart

Thread Size Thread Diameter Threaded Shank Length (200+mm)
M8 1.25 n/a
M10 1.5 45mm
M12 1.75 49mm
M14 2 53mm

What are the 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
5/8″ 1-1/2″ 1-3/4″
3/4″ 1-3/4″ 2″
7/8″ 2″ 2-1/4″

How can you tell the size of a bolt?

How to Measure Screws &amp, Bolts – US &amp, Metric Sizing | Fasteners 101

What do the numbers in bolt sizes mean?

The number 1 or number larger than one, or number one or number larger than one followed by a fraction, is the diameter of the shaft. The number following the hyphen is the number of threads per inch, that is, the number of threads on the shaft itself, per inch of shaft length. Same as for smaller parts.

What does M8 bolt mean?

The defined diameter of metric bolts is actually slightly larger than the actual diameter of the bolt shaft. So an M8 bolt would have a shaft diameter that’s slightly under 8mm which means that the bolt should fit through an 8mm hole.

What is the most common bolt size?

American Manufacturers generally use 13mm, 15mm, 18mm, and 19mm bolts. Anything smaller than these is likely an 8mm or 10mm, and bith asian and american companies use them most often.

What size is m30?

Metric Hex Bolt Dimensions

NOMINAL SIZE (D) BODY DIAMETER ACROSS CORNERS
m24 24.00 39.55
m30 30.00 50.85
m36 36.00 60.79
m42 42.00 71.71

What does a #8 screw mean?

Their size is described as diameter, number of threads per inch (if used with a nut or in a threaded hole), and length in inches. … In all cases, the larger the number, the larger the size. Consequently a #8 screw is larger than a #4 screw, just as a 3 inch bolt is larger than a 2 inch bolt.

What size is a M5 screw?

SOCKET HEAD CAP SCREW – METRIC

Size Diameter Head Diameter
M3-0.5 3.00 5.50
M4-0.7 4.00 7.00
M5-0.8 5.00 8.50
M6-1.0 6.00 10.00

How can you tell if a bolt is metric or standard?

Telling the difference between a metric and imperial bolt is easy. If the bolt has lines on the head its standard or imperial. If the bolt has numbers on the head then its metric.

What does 8.8 mean on a bolt?

In the case of a 8.8 grade bolt the first figure signifies that the Tensile Strength is at least 800MPa. The second figure signifies that the fastener will begin to yield at 80% of the Ultimate Tensile Strength, i.e. at least 640MPa.

Are M6 and 1/4 the same?

The size of a metric screw or bolt is specified as diameter, pitch and length, in millimeters (millimeters is abbreviated “mm”).

Table 3.

Metric Closest Inch
M6-1.0 1/4-28 (Larger)
M7-1.0 1/4-28 (Smaller)
M8-1.25 5/16-18 (Smaller)
M10-1.5 3/8-16 (Smaller)

What are the different bolt grades?

There are several grades of bolts but the three common grades for SAE are 2, 5 and 8. The common class (grades) for metric are 5.8, 8.8, 10.9 and 12.9. Each grade has a specific bolt strength. No matter the system used to grade the bolts, the higher number means the stronger the bolt.

What’s bigger 5/16 or 8mm?

8mm = 5/16 inch.

What does M12 mean?

6. Those are metric screw dimensions. M10 means a 10 millimeter outer diameter for the bolt or whatever piece it is, M12 means 12 millimeters. The part after the ‘x’ is the pitch — how many mm a thread is wide. To figure out which you have, you can measure the existing part with calipers and a thread gauge.

What is bigger 5/16 or M8?

Well, quick answer is no. They are not the same and they are not interchangeable, although they can work under certain circumstances. The most important part is understanding the meaning of M8 and 5/16 to refer to the size of a metric screw or bolt, so then we can see why they aren’t the same thing!

What is M20 bolt?

M10-1.0 x 20

M = This designates the fastener is a metric size. 10 = The nominal diameter in millimeters. 1.0 = The thread pitch, or distance between threads, in millimeters. 20 = The fastener’s length, in millimeters.

What size is an M4 bolt?

ISO Metric Machine Screw Thread Dimensions

Thread Size Nominal Diameter (mm) Clearance Hole (mm)
M3 3.0 3.6
M3.5 3.5 4.2
M4 4.0 4.8
M4.5 4.5 5.3

What is M5 screw?

An M5 bolt is a 5mm diameter threaded bolt that can be found in a variety of lengths and different head types. M(X) is the metric designation for bolts, where X is the diameter of the bolt in millimeters.

What size bolt fits a 13mm socket?

Size Chart

Bolt size Size Tolerance
12mm 12.30
5/16″UNF 1/2″ 13.00
M8 13mm 13.30
1/4“BSW 13.64

What size bolt does a 9/16 nut fit?

Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt.

US Bolts
Bolt Diameter (in) Head and Wrench Size (in)
1/2 3/4 7/8
9/16 13/16
5/8 15/16 1 1/16

What size is M13?

Shoe size

Shoe size
M11 45-46 10-11
M12 46-47 11-12
M13 48-49 12
M14 49-50 13

Is a number 8 or 10 screw bigger?

Wood Screw Diameters

Size Major Thread Diameter*
Decimal Nearest Fractional Measurement
#8 .164″ 5/32″
#9 .177″ 11/64″
#10 .190″ 3/16″

How do I know what size my screw is?

To measure the diameter of screws and bolts, you measure the distance from the outer thread on one side to the outer thread on the other side. This is called the major diameter and will usually be the proper size of the bolt.

What does #12 mean in screws?

The number “12” is a size designator with no numerical meaning. The number “24” refers to 24 threads per inch. You can identify a 12-24 screw by measuring the diameter at slightly less than 7/32″ (5.55 mm).

What diameter is M6 thread?

Thread Geometry – Metric Coarse

Thread Major Diameter Pitch Diameter
M4 4.0 3.545
M4.5 4.5 4.013
M5 5.0 4.480
M6 6.0 5.350

What size is M4 in inches?

Thread Geometry – Metric Coarse

Thread Major Diameter Pitch Diameter
M4 4.0 3.545
M4.5 4.5 4.013
M5 5.0 4.480
M6 6.0 5.350

What size is M10 nut?

M10 nuts have a diameter of 10 mm and are one of the most common sizes of nut available. We stock different types of 10mm nut such as tee nuts, wing nuts and standard 10mm locking nuts.

Do metric bolts have different threads?

When it comes to METRIC hardware, there can be up to four different thread pitches for a given size of fastener. Thread pitch in metric hardware refers to the ACTUAL DIMENSION OF EACH THREAD, and is measured in MILLIMETERS. … For example, 10mm bolts are commonly available in 1.0, 1.25, and 1.5 thread pitches.

What does M14 mean on a bolt?

M14 means it is metric with a 14mm outside diameter.

Do you need both SAE and metric?

For general automotive work – you will need both. With American cars they are mixed – sometimes on the same part… (Ie the housing bolts are 9/16 but the nut on the pulley is 19 mm…) Older heavy equipment is all SAE, newer stuff mixed foreign stuff metric.

What’s the difference between 4.6 and 8.8 bolts?

Category 4.6/S refers to commercial bolts of Property Class 4.6 conforming to AS 1111.1 tightened using a standard wrench to a ‘snug-tight’ condition. Category 8.8/S refers to any bolt of Property Class 8.8, tightened using a standard wrench to a ‘snug- tight’ condition in the same way as for category 4.6/S.

What is the meaning of 4.6 grade bolt?

The specification Class 4.6 Threaded Rod is a standard that covers fasteners manufactured from either Low carbon steel or medium carbon steel. … The ultimate material strength of Grade 4.6 Threaded Rod is 40 Mpa while its yield strength or the proof stress is 60% that of the ultimate strength.

What size is a 9.8 bolt?

Metric steel bolts, screws and studs – proof and tensile strength.

Property Class Size Range (mm) Minimum Tensile Strength (106 Pa)
4.8 M1.6 – M16 420
5.8 M5 – M24 520
8.8 M1.6 – M36 830
9.8 M1.6 – M16 900

What is UNC and UNF?

UNC: Is the symbol for Unified coarse pitch threads. UNF: Is the symbol for Unified fine pitch threads. UNEF: Is the symbol for United extra fine pitch threads. UNS: Is the symbol for Unified special threads.

What is M4 screw?

They’re made from a durable carbon steel and come with a nut for tightening metal surfaces together. The M4 machine screw has a thread diameter of 4 millimetres, in simple terms the M stands for millimetres followed by the size – in this case 4 mm. 12 products. See more Screws.

What is equivalent to M6?

They’re made from a durable carbon steel and come with a nut for tightening metal surfaces together. The M4 machine screw has a thread diameter of 4 millimetres, in simple terms the M stands for millimetres followed by the size – in this case 4 mm. 12 products. See more Screws.

Which bolts are the strongest?

Grade 9 structural bolts, also known as grade 9 hex cap screws, are one the strongest structural bolts that can be used today. While the typical grade 8 bolt has a tensile strength of 150,000 PSI, a grade 9 bolt has a tensile strength of 180,000PSI.

Is Grade 8 or 12.9 stronger?

A head with no markings is Grade 2, one with 3 lines spaced 120 degrees is Grade 5, and 6 lines spaced at 60 degree intervals is Grade 8.

Table 1.

Grade/Class Strength
Metric Class 10.9 Similar to Grade 8.
Metric Class 12.9 The highest metric class for strength, it exceeds Grade 8.

How do you identify bolt grades?

Determining Bolt Grade and Head Markings – YouTube

How thick is .08 of an inch?

Inch/mm equivalents table

inch/64 Fractional inch Decimal inch
6 3/32 0.09375
7 7/64 0.109375
8 1/8 0.125
9 9/64 0.140625

What is 10 mm in fractions?

Millimeters to inches conversion table

Millimeters (mm) Inches (“) (decimal) Inches (“) (fraction)
8 mm 0.3150 ″ 5/16 ″
9 mm 0.3543 ″ 23/64 ″
10 mm 0.3937 ″ 25/64 ″
20 mm 0.7874 ″ 25/32 ″

What is 3mm in inches fraction?

Millimeters to inches conversion table

Millimeters (mm) Inches (“) (decimal) Inches (“) (fraction)
8 mm 0.3150 ″ 5/16 ″
9 mm 0.3543 ″ 23/64 ″
10 mm 0.3937 ″ 25/64 ″
20 mm 0.7874 ″ 25/32 ″

What does M3 mean in screws?

The stated size of the thread M3 , M4 etc is the major diameter. I av been in engineering (37 years). The size of the drilled hole for the tap is always 10% less. So for M6 threadthe hole would be 5.4mm etc. Always important to drill the correct hole diameter or else the bolt can fail in the hole.

What is meant by the grade of a threaded fastener?

A threaded fastener’s grade indicates its tensile strength and hardness. The higher the clamping load required, the higher the grade you’ll need.

What M12x1 75?

M12x1. 75 is the metric way to indicate a thread. M12 means that the OD thread is 12mm, the 1.75 is the step of the thread.

Is an M8 bolt 8mm wide?

M8 is the designation for a metric (M) sized bolt or screw that is 8mm (8) in diameter. This is roughly equivalent to a 5/16 bolt or screw.

What is M8 in standard?

Thread Conversion Table

Metric Coarse Metric Fine BSF/BSW
M6 x 1 M6 x 0.75 1/4″
M8 x 1.25 M8 x 1 5/16″
M10 x 1.5 M10 x 1.25 3/8″
M12 x 1.75 M12 x 1.25 1/2″