What are square nuts called?
Square headed nuts were also called cut nuts. Cut nuts were made by drilling/punching a large sheet of steel with thousands of holes aligned in rows and columns. Then the sheet was “cut” in a shear to create long “stick” of steel with a single row of holes.
When did they stop making square nuts and bolts?
Square steel nuts were common on machinery of the late 19th through mid 20th century. Today hex nuts have displaced them. One reason is that a hex nut offers a new wrenching access at every 60°, whereas a square nut offers one only at every 90°.
What is the purpose of square nuts?
A square nut, or square head nut, is a four-sided nut that is designed for use with a square head bolt and flat washer. Square nuts offer greater surface contact with the part being fastened compared to a standard hex nut, and therefore provide greater resistance to loosening.
What tool do you use for square nuts?
Square nuts can be turned with wrenches. A square nut is a steel fastening device with four sides that threads onto a steel bolt. Made prior to the hexagonal nut, the square nut uses a purpose-built wrench to tighten and loosen it from its bolt.
Do they still make square nuts?
1/4″ Gutter bolts with square nuts are still available. The common rule was that Square was used where the fastening was not required near the vertical member, or with tension, and then hexagonal were used so as to get closer to the vertical member.
How do you tighten a square nut?
Square nuts can be tightened with pliers or a wrench, making them ideal for use in blind locations. Laborers can tighten and loosen a square shaped fastener without having it in sight, as long as a sturdy grip can be obtained on two opposing sides of the nut or bolt head.
Why are bolts hexagonal and not square?
They Are Easy to Turn
Bolts and nuts are designed with a hexagonal shape because it makes them easy to turn. With six sides, you can turn a fastener just one-sixth of the way to reach the next flat parallel.
Why don’t we use square nuts?
Material Efficiency In order to maintain the minimum amount of material between the threads and the edge of the nut, square nuts have a fair amount of ‘wasted’ volume in the corners that increases the amount of metal per nut for a given screw size.
What sockets fit square nuts?
Sockets for Square head bolts
- 5/16″ socket fits most 3/16″ bolts.
- 3/8″ socket fits most 1/4″ bolts.
- 7/16″ socket fits some 1/4″ bolts.
- 1/2″ socket fits most 5/16″ bolts.
- 13mm socket fits our Pyramid head bolts.
- 9/16″ socket fits most 3/8″ bolts.
- 3/4″ socket fits most 1/2″ bolts.
How do you grip a square nut?
Because of the four-sided shape, square nuts and square headed bolts are very simple to tighten. Your tool simply grips two opposite sides to tighten and loosen these fasteners, as opposed to fitting snugly onto a hex shaped head.
When did nuts go from square to hex?
NUTS & BOLTS
The hex head was developed as far back as the very early 1830’s (James Nasmith) , and the square continued mainly in the production of agricultural implements. In Australia the implement manufacturers bought square mild steel bars and made their own, say into the 30’s (Depression).
Do they make sockets for square head bolts?
Sockets & Drivers for Square head Bolts
Try using a socket that fits the number of corners on your square head bolts. These Square Socket or 4-point sockets fit many of the common head sizes we sell. Sockets for square head bolts and Square Nuts. Bolts and screws are classified by their shank or shaft size.
Why are bolts hexagonal instead of square?
Bolts and nuts are designed with a hexagonal shape because it makes them easy to turn. With six sides, you can turn a fastener just one-sixth of the way to reach the next flat parallel. There are six flat parallels on hexagonal bolts and nuts.
What socket can I use for a square head bolt?
Try using a socket that fits the number of corners on your square head bolts. These Square Socket or 4-point sockets fit many of the common head sizes we sell.
How do you get a nut off a square head?
REMOVING SQUARE-HEADED SCREWS W/O PROPER BIT OR A …
How do you stop a nut from spinning?
Heat the nut with a hair dryer to expand the metal. While the nut is still warm, finagle it with a wrench. Try to tighten or loosen the nut. When the metal cools, the nut will contract.
What is a square socket called?
The drive socket is the square hole which is used to attach the socket to a turning tool such as a ratchet or wrench.
When did nuts change from square to hexagon?
Are there sockets for square nuts?
How do you unscrew a square head bolt?
What socket fits a square bolt?
How do you keep a nut in place?
Nylon or metal inserts inside a nut (sometimes called a “lock nut”) can add extra friction to prevent loosening. A related idea is to fit a spring inside the nut, which firmly grasps the bolt threads and is designed to move in the opposite direction of the nut if vibration or other forces cause it to unwind.
How do you loosen a nut that won’t budge?
This Old House’s plumbing and heating expert, listed in order from easiest to difficult.
- Tighten the nut. Moving the nut in any direction is progress.
- Tap with a hammer. Jarring the nut can break its bond to the bolt.
- Apply heat. Metal expands slightly when hot, which may be enough to crack the nut free.
- Soak the nut.
What are the 4 different types of sockets?
What are the different types of socket?
- Hex Sockets. Hex sockets are the most common type of socket and come in two main types: hex/6 point sockets and bi-hex/12 point sockets.
- Socket Bits.
- Impact Socket.
- Spark Plug Socket.
- Insulated Sockets.
- Pass Through Sockets.
- Adjustable Multi Sockets.
- Oil Filter Socket.