What does HHCS mean on a bolt?
Hex Head Cap Screw
Hex Head Cap Screw (HHCS): In addition to the features of a hex bolt, these threaded fasteners have a washer face beneath the head and a chamfered thread point. The flat washer face provides a higher quality bearing surface than Hex Bolts.
What is a bolt called with no head?
Socket Set “Grub” Screws. Set screws are most often headless (aka blind), meaning that the screw is fully threaded and has no head.
What are the three types of bolts?
Most, if not all, bolt types have machine threads. A threaded bolt screws into nuts to hold or fasten materials together. Bolt types include eye bolts, wheel bolts and machine bolts while types of nuts include cap nuts, expansion nuts and u-nuts.
What do the numbers and letters mean on bolts?
You can usually figure out the grade, or strength, of a bolt by looking at the markings on its head. English bolts (U.S.S. or S.A.E) are categorized by grade, from grade 2 to grade 8, where the grade represents inch strength. The higher the grade, the stronger the bolt.
What does P stand for on a bolt?
Phillips
Common Fastener Related Abbreviations
| Abbreviation | Meaning |
|---|---|
| OV | Oval Head |
| P | Phillips |
| PH | Phillips Head |
| Phil. | Phillips Drive |
What does M stand for on a bolt?
metric thread
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 is the female part of a bolt called?
The nut is the female member of the pair, having internal threads to match those of the bolt. Washers are often used to prevent loosening and crushing. See also nut; washer.
What do you call a bolt with threads on both ends?
A bolt with threads on both ends, also called stud bolts. Used to fasten two flanges or pipes more effectively. A self-locking bolt with a domed head and square section underneath.
Which bolt is used most commonly?
Hexagonal headed bolt: The shape of head is hexagonal. It is most common for of bolt and widely used in machines and the engineering works to tighten two or more parts together.
How are bolts named?
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.
How do I identify a bolt?
How to Measure and identify Bolts – YouTube
How do you read bolt numbers?
Whether metric or standard, all bolts are sized by diameter, thread pitch, and length—in that order. So, for example, an SAE 1/2-16 x 2 bolt is ½” in diameter, has 16 threads per inch, and is 2″ long. An M12-1.5 x 50 metric bolt is 12mm in diameter, has a thread pitch of 1.5mm, and is 50mm long.
What does the M stand for on bolts?
What does jh on bolt head mean?
Bolt Head Markings: What do they mean? | Fasteners 101 – YouTube
What M10 means?
Those are metric screw dimensions. M10 means a 10 millimeter outer diameter for the bolt or whatever piece it is; M12 means 12 millimeters.
What does M12 mean?
M12 is a matching coarse threaded nut. (To avoid confusion, we always include the thread pitch for both coarse and fine metric fasteners.) If you normally work with inch fasteners, pitch can be a little confusing—pitch is the distance between adjacent threads.
What is a bolt with a hole in it called?
Bolts may be screwed directly into a threaded hole in the part they are to hold, or they may be held in place by nuts. A nut is a block of metal with a hole in the center. The hole is threaded to match the threads on the bolt.
What is a screw without a point called?
Machine screws have no points and are intended to use in holes that are already tapped or with a nut. They are threaded along the entire shaft are sold in threads per inch.
What is a bolt with a full thread called?
A fully threaded screw is a type of fastener that’s characterized by complete external threading on the shaft — also known as the shank — as well as a pointed tip.
How do I choose a bolt grade?
Picking The Correct Bolt Grade And Thread Pitch For Your Build
What do you call a bolt with no threads?
They are called partial thread bolts because of the part that has no threading. This non-thread area of a bolt, also known as the bolt shank or shoulder of the fastener, will vary in length depending on the bolt’s application.
What do bolt numbers mean?
Each grade has a specific bolt strength. No matter the system used to grade the bolts, the higher number means the stronger the bolt. For most home and automotive applications, you won’t need anything more than a grade 8 bolt strength or metric class 10.9.
What are bolt types?
What are the Types of Bolts?
- Anchor Bolts.
- Blind Bolts.
- Carriage Bolts.
- Double End Bolts.
- Eye Bolts.
- Flange Bolts.
- Hex Bolts.
- Machine Bolts and Machine Screws.
What do the numbers on a bolt mean?
Bolt Grade Markings
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 does M14x1 mean?
For example, if the metric bolt was M14x1. 5×25, it would have a diameter of 14 millimeters. Determine the distance between threads by looking at the second number. For example, if the metric bolt was M14x1. 5×25, it would have 1.5 millimeters between threads.