How to loosen a stuck screw bolt?

A screw bolt is a mechanism that converts rotational motion to linear motion. It is one of the six classical simple machines. The most common form of screw bolt consists of a cylindrical shaft with helical grooves or ridges called threads around the outside.

• How to buy a right screw bolt?

• How to loosen a stuck screw bolt?

• How to lubricate screw bolts?

How to buy a right screw bolt?

To ensure a proper and safe fit, you will need to identify specific characteristics of screw bolts.

Thread size: You can easily identify your thread size of screw bolts and pitch with a simple thread pitch gauge available at any hardware store. The thread size of screw bolt is the measurement taken across the outside diameter of threads measured in standard or metric dimensions.

Thread pitch: The thread pitch of screw bolts is the measurement of either threads per inch for non-metric studs or the distance in millimeters between the threads for metric applications.

Length or dimensions: It is critical that you confirm the dimensions of screw bolts to ensure a proper fit for both safety and appearance, including the outside diameter, overall length. You must also determine the proper shank diameter and shank depth of screw bolts.

Finish or color: Our screw bolts are available in a wide variety of finishes and colors including chrome plated, black chrome, stainless steel, zinc, yellow chromate, silver, red, and blue.

How to loosen a stuck screw bolt?

Make sure you have got the right size and shape of screwdriver. Smaller screwdrivers, square heads or Phillips heads, will fit into a larger screw bolt. But they cannot provide the full amount of torque and would destroy the slot or round off the head.

Be sure that turn the screw bolt in the proper direction. If you work upside down, it is easy to get twisted around and be tightening rather than loosening.

Put some penetrating oil on the screw bolt and place it for a while. Insert your screwdriver and tap with your hammer. Break the screw bolt free from the rust in place.

Apply some heat directly to the screw bolt using an electric soldering gun or a propane plumbing torch. Wipe up any excess.

If you attempt to remove the screw bolts that have the ruined head, a small metal file flats two sides. Lock on your locking pliers and try to remove it by turning the pliers.

Use a small hacksaw to cut a slot in the screw bolt. Then, use a large slot screwdriver to remove.

Use a commercial screw remover that is small sharp metal drill bits with reverse threads. Insert the bit in electric drill. Set the drill to reverse, then slowly drill into the screw bolt.

How to lubricate screw bolts?

Use a penetrating oil if the screw bolts are rusted to the stud. It might be helpful to spray a moderate amount of penetrating oil directly.

Use the tube with the penetrating oil to apply the penetrant accurately. Avoid overspray that may get on the brake drum or rotor. Place for about ten minutes to work.

If the screw bolts are still stubborn, try one more spritz of a light, directed spray to the surface of the threaded stud of screw bolts exactly where the threads start to disappear inside the screw bolts. Let screw bolts sit for another ten minutes and check the results.

Learn more something about screw bolts can know how to buy screw bolts and how to lubricate screw bolts. If you want to buy high-quality screw bolts with reasonable price, Jiangsu Suqing Standard Parts CO., LTD. can help you to open up a further and larger market, it is wise to choose us as your business partner.