What socket fits a square head bolt?
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.
What socket is used for Square Nuts?
3/8″ Drive 9/16″ Standard Impact Socket Standard impact sockets are used in conjunction with a power tool to turn fasteners.
Will an 8 point socket fit a square nut?

The 5/8″-8pt socket is used for 3/8″ square nuts. The 9/16”-8pt socket used for 3/8” machine bolts & 3/8” lag bolts. Get notified by email when this product is in stock.
What are square sockets used for?
Sockets are generally internally square-shaped at one end. This end is called the square-drive connector. It is used to connect a socket to a ratchet. It is also the end that is being driven or turned by the ratchet.
Can you use a 12 point socket on a square?
Most 12 points fit only hex but apply pressure only near the corners and high torque rounds off the fasteners. 4 point fits squares like a 6 point fits hex. 8 point for squares can take off corners. Most all impact wrench sockets are 6 or 4 point.
Can you use a 6 point socket on a square?

6 point fits only hex but applies pressure at least half the width of each flat. Most 12 points fit only hex but apply pressure only near the corners and high torque rounds off the fasteners. 4 point fits squares like a 6 point fits hex. 8 point for squares can take off corners.
What year did they stop using square nuts?
For both bolts and nuts, heat treating/hardening of the metal was the last step. By the way…that 1949 agreement to standardize nuts and bolts into ISO inch and ISO metric was probably when the square headed bolts/nuts ended production in mass…as it would have required new investments in machinery.
What to use if you don’t have a square screwdriver?
Extracting Single-Slot Screws
- A kitchen knife. Choose one with a rounded tip, such as a butter knife.
- A coin — preferably a dime, which is thin enough to fit in most screw slots.
- A credit card.
- A rubber band.
- A chisel, which does an even better job of turning single-slot screws than a flat-head screwdriver.