The main parts of a screw include
the drive, the head, the shank, the thread and the tip
. Read our guide to what are the different parts of a screw and their purposes.
What are the 4 types of screw heads?
- Step 1: Slotted. Slotted screws are the simplest type of screw, consisting of a single slot at the head of the screw. …
- Step 2: Phillips. The Phillips screw, named after Henry F. …
- Step 3: Square Aka “Robertson” …
- Step 4: Torx Aka “Star” …
- 19 Comments.
What are the main parts of a screw?
The three basic parts of a screw are
the head, threaded shank and point
.
What are the things on a screw called?
They have a corkscrew-shaped ridge, known as a
thread
, wrapped around a cylinder. The head is specially shaped to allow a screwdriver or wrench to grip the screw when driving it in.
What is the top of a screw called?
The top, the part that is visible after the screw is installed, is
the head
. Directly below the head lies the shank, a smooth area of the screw with no threading; not all screws have one. The rest of the cylinder is called the shaft. Screw height is measured from the end point of the screw shaft to the head.
What are the parts of the screw threads?
- Crest: It is the top most surface joining the two sides of a thread.
- Root: It is the bottom of the thread groove. …
- Major Diameter (D): It is the largest diameter of a screw thread or a threaded hole.
- Minor Diameter (d): …
- Pitch Diameter (E): …
- Pitch (P): …
- Lead (L): …
- Depth (h):
What are the parts of a screw or bolt?
- Head. The head is the uppermost part of a bolt. It serves as the gripping surface for tools. …
- Shank. Below the head is the shank. The shank is the smooth part of a bolt that’s devoid of threading. …
- Threading. All bolts have threading.
What are the different screw types?
- #1) Wood Screw. Perhaps the single most common type of screw is a wood screw. …
- #2) Machine Screw. A machine screw, as the name suggests, is a type of screw that’s used in machining applications. …
- #3) Lag Screw. …
- #4) Sheet Metal Screw. …
- #5) Twinfast Screw. …
- #6) Security Screw.
What are the 3 types of screws?
3 Common Screw Types at a Glance –
Machine, Sheet Metal, and Cap Screws
.
What is a screw socket?
What is a Socket Screw? Socket screws are
a type of screw designed and manufactured with a hexagonal (hex) internal drive built into the head
. As such, they are intended to be tightened and loosened with an Allen wrench or hex key, as opposed to a traditional screwdriver.
What are grooves on a screw?
There are ridges or grooves called
threads
(A) that wind around the cylinder or the shaft (B). The distance between each of the threads are the same for a specific screw, but may be different is other sized screws. The space between each of the threads is called a pitch (C).
What do you call the Part A screw screws into?
That is simply called
a threaded insert
.
What is the flat part of a screw called?
Head
: The head is the top of the screw. It’s typically wider than the shank and thread. Heads can be flat or domed.
What is a screw shank?
The shank is
the threadless part of the bolt between the head and thread
. There are two main ways of using the shank of the bolt. One is to make the shank increase the shearing capacity.
How do you tell screws apart?
General. Fasteners are identified by
four or five attributes
; Type, Material, Diameter, Length, and Thread Pitch or Count (machine thread fasteners only).
What is the notch in a screw called?
The cylindrical portion of the screw from the underside of the head to the tip is known as the
shank
; it may be fully threaded or partially threaded. The distance between each thread is called the “pitch”.
