Hex Bolt Head Size Chart
| Diameter | Head Size |
|---|---|
| 1/4″ | 7/16″ |
| 5/16″ | 1/2″ |
| 3/8″ | 9/16″ |
| 7/16″ | 5/8″ |
What size is a 1/4 bolt?
Selecting a salt water chlorinator
In general, the average 40,000L back yard pool in Queensland will need a chlorinator capable of producing between 20 and 30 grams of chlorine per hour, but there are many factors that can vary this, so be sure to get some professional advice before you invest in this equipment.
What are the dimensions of a 1/4 20 bolt?
Bolt Thread Sizes
| Size | Nominal (Major) Diameter [in] | Coarse Thread (UNC) |
|---|---|---|
| Threads Per Inch | ||
| #8 | 0.1640 | 32 |
| #10 | 0.1900 | 24 |
| 1/4″ | 0.2500 | 20 |
How do you tell what size a bolt head 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 size nut goes on a 1/4 bolt?
US Nut Size Table
| Size | Diameter* | Height |
|---|---|---|
| Hex Nut | Hex Nut | |
| 1/4″ | 7/16″ | 7/32″ |
| 5/16″ | 1/2″ | 17/64″ |
| 3/8″ | 9/16″ | 21/64″ |
What size bolt has a 1 1 4 head?
US Bolt Head/Wrench Size
| Bolt Diameter | Head and Wrench Size | |
|---|---|---|
| Hex Bolt – Lag Bolt – Square Bolt | Heavy Hex Bolt | |
| 1″ | 1-1/2″ | 1-5/8″ |
| 1-1/8″ | 1-11/16″ | 1-3/4″ |
| 1-1/4″ | 1-7/8″ | 2″ |
What is a 1/4 screw?
So, a 1/4-20 screw has a 1/4″ diameter (. 250″) with 20 threads per inch. Sometimes the terms “coarse” (or UNC/Unified Coarse Thread) or “fine” (UNF/Unified Fine Thread) are used to describe the thread.
What pitch is a 1/4 20 UNC bolt?
UNC Thread ANSI/ASME B1. 1
| Nominal Diameter | Major Diameter Inch | Pitch mm |
|---|---|---|
| 1/4″ – 20 UNC | 0.250 | 1.270 |
| 5/16″ – 18 UNC | 0.313 | 1.411 |
| 3/8″ – 16 UNC | 0.375 | 1.587 |
| 7/16″ – 14 UNC | 0.438 | 1.814 |
What is a 20 bolt?
Thread Count/Pitch
US fasteners specify threads per inch (TPI), commonly called thread count, so 20 would represent 20 threads per inch.
What size is a #4 bolt?
Machine screws are often found in sizes of: 0, 1, 2, 3, 4, 5, 6, 8, 10, 12, 14—the larger the number, the larger the screw. Machine screws, but especially caps screws and bolts, can range from 1/4 inch up to 3 inches or more.
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Table 1.
| Threads per Inch | Pitch (inches) | Pitch (mm) |
|---|---|---|
| 4 | 0.2500 | 6.350 |
How do I identify a bolt?
How to Measure and identify Bolts – YouTube
How do I choose a bolt size?
How to Measure the Size of a Bolt
- Step 1: Measure the shank’s diameter. The shaft of the bolt is called the shank, and its diameter is the first dimension used to describe a bolt size. …
- Step 2: Determine the thread pitch. …
- Step 3: Measure the length of the shank. …
- Step 6: Measure the length of the threaded portion of the bolt.
What size bolt has a 28mm head?
Size Chart
| Bolt size | Size | Tolerance |
|---|---|---|
| 5/8″UNC | 1-1/16″ | 27.56 |
| M18 | 27mm | 27.58 |
| 28mm | 28.58 | |
| 5/8″BSW | 28.61 |
What is the size below 1 4?
Metric / Standard Wrench Conversion Chart
| Bolt Diameter | Metric | Standard |
|---|---|---|
| 3/16″ | 10mm | 3/8″ |
| 1/4″ | 11mm | 7/16″ |
| 5/16″ | 13mm | 1/2″ |
| 3/8″ | 14mm | 9/16″ |
Is 1363 a standard?
1. IS 1363 (Part 1):2019 /ISO 4016:2011 specifies the characteristics of Hexagon Head Bolts with thread size from M5 upto and including M64 of product grade C. Also Bolts may be of different property classes as specified in IS 1363 (Part 1): 2019 / ISO 4016:2011.
What size head does an m12 bolt have?
Metric Hex Bolt Dimensions
| NOMINAL SIZE (D) | BODY DIAMETER | HEAD THICKNESS |
|---|---|---|
| m12 | 12.00 | 7.76 |
| m14 | 14.00 | 9.09 |
| m16 | 16.00 | 10.32 |
| m20 | 20.00 | 12.88 |
How much torque does a 1/2 inch bolt have?
ASTM A449 / SAE Grade 5*
| Bolt Size | TPI | Tightening Torque (ft lbs) |
|---|---|---|
| Plain | ||
| 1⁄2 | 13 | 75 |
| 9⁄16 | 12 | 109 |
| 5⁄8 | 11 | 150 |
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 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″ |
Do they make 1/4 screws?
#4 x 1/4 Brass Wood Screws, Flat Countersunk Head, Phillips Drive – (Pack of 100) Solid Brass Plain Finish, Screw Size: #4, Length: 1/4 inches.
Are #14 and 1/4 screws the same?
We see that #14 would be 0.242 inches and #1/4 is 0.250 inches. One can see that this is only a 0.008″ or 0.2 mm (200 um) difference between screw diameters. It is not difficult to imagine many situations where this size similarity caused mistakes.
Is a #12 screw the same as 1 4?
The diameters listed in the chart below are in fractions of an inch, so the #12 is just shy of 1/4 inch.
What does a 1/4 20 screw mean?
1/4″-20 x 2″
The 1/4″ refers to the bolt diameter (in inches), the -20 refers to the threads per inch meaning that there are 20 threads per inch on this bolt, and the 2″ refers to the length (also in inches).
What does UNC 2A mean?
2-56 UNF 2A means it is a #2 thread (sometimes called also 0.086, as this is 0.086 inch) with 56 threads per inch, manufactured, dimensioned and checked according to Unified National Fine Standard and this is a normal external thread.
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 a quarter 20 bolt?
So, for example, in the United States one might ask for a “2-inch hex-head quarter-twenty bolt,” which would be. 2 inches long, have a hexagonal head (to be turned by a wrench) have a nominal diameter of a quarter of an inch, and. have twenty threads to the inch.
What size bolt has a 1/3 16 head?
Hex Bolt, Lag Bolt, Square Bolt and Heavy Hex Bolt.
| US Bolts | ||
|---|---|---|
| Bolt Diameter (in) | Head and Wrench Size (in) | |
| 1 1/8 | 1 11/16 | 1 -3/4 |
| 1 1/4 | 1 7/8 | 2 |
| 1 3/8 | 2 1/16 |
What is a quarter 20 screw?
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. 1/4-20: One quarter inch shaft diameter, 20 threads per inch.
What diameter 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 |
Does bolt length include the head?
Does the length measurement of a bolt include the head? In most cases, when specifying the length of a headed bolt, the thickness of the bolt head is not included. For instance, if you were to order a ¾” x 24” hex head bolt, the bolt would measure 24” from under the head.
What are the markings on a bolt head?
This will vary from manufacturer to manufacturer, but is usually one, two or three characters. The markings can identify the standard to which the bolt was made. For instance, if a bolt head contains three radial lines, then it’s a Grade 5 bolt. If it contains five radial lines, then the bolt is Grade 8.
What does the 8.8 on a bolt mean?
So, in English, a PC 8.8 bolt is a bolt with a nominal tensile strength of 800 MPa and a nominal yield strength that is 80% of the bolt’s nominal tensile strength, or 640 MPa.
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.
How do I choose the right bolt?
This is how you choose the right bolt for the joint:
- First, identify the load case.
- Determine the necessary clamping force in the joint.
- Choose the smallest bolt diameter that can support the clamp load.
- Choose an effective bolt securing method.
- Decide on the most appropriate tightening method.
How many threads does a bolt need?
Many studies have found that there is a simple rule of thumb for standard pitch fasteners. The depth of a fastener should be at least two times its nominal diameter. For example a 1/4in (0.25in) fastener should be threaded at least 1/2in (0.50in) deep.
Which type of threads have high strength?
Where the length of engagement is limited, fine threads provide greater strength. Their larger minor diameters develop higher torsional and transverse shear lengths. Fine threads require less torque to develop equivalent bolt preloads. Fine threads are more susceptible to thread galling than coarse threads.
What size bolt has a 24mm head?
Metric Bolt Head/Wrench Size
| Bolt Diameter (mm) | Head/Wrench Size (mm) | |
|---|---|---|
| ANSI/ISO | DIN | |
| 12 | 18 | 19 |
| 14 | 21 | 22 |
| 16 | 24 | 24 |
What size is M20?
Standard metric spanner and allen key sizes.
| Size | Spanner | Allen Key |
|---|---|---|
| M12 | 19 mm | 10 mm |
| M16 | 24 mm | 14 mm |
| M20 | 30 mm | 17 mm |
| M24 | 36 mm | 19 mm |
What size bolt uses a 10mm socket?
The standard 6mm cap screw has a 10mm head.