Studs (2024)

Studs require a two-part assembly operation but offer several advantages. They eliminate deviations from perfect squareness in an assembly. The ability of a nut to "float" and adjust on the nut end threads is an advantage of using the stud over the bolt or screw. The thicker the cover plate, or the longer the tapped hole, the more important this becomes.

In assembling and reassembling heavy parts such as turbine casings and cylinder heads, studs can act as pilots. Also, in the automatic assembly of small, lightweight units, studs reduce assembly costs since they permit quick and easy "stack up" of gaskets or other different parts of a joint.

Studs reduce the need for the large hole clearance and close hole alignment required by a cap screw or bolt. During assembly, the runout, or eccentricity, of cap screws and bolts is doubled as the fastener is turned. Clearance holes accommodate the runout which may cause eccentric loading and bending stresses in the joint.

Studs with an interference-fit thread or proprietary-lock thread on the tap end provide a positive lock against turning and loosening. The lock facilitates assembly and disassembly of locknuts on studs and is particularly important where maintenance of prestress is required to combat fatigue failures.

Studs applied with sealant prevent leakage of fluids through holes tapped in porous materials.

There are four basic stud types:

  • Class 1 has an interference fit at one end and a free-running thread at the other. This is also called a gland or tap-end stud.
  • Class 2 has free-running threads at both ends. This is also called a double-end stud.
  • Class 3 is a three-bolt stud, which is used in high-temperature/pressure applications.
  • Class 4 is used for general-purpose applications.
Studs (2024)

FAQs

How do I calculate how many studs I need? ›

Determine the number of studs needed by starting with a quick calculation for the general studs and adding studs for specific elements: Multiply the total wall length (in feet) by 0.75 (for 16-inch on-center stud spacing). Add three studs for each 90-degree corner.

What is the easiest way to find studs? ›

Use tape or dental floss with a magnet attached and drag it across the wall to find the stud. This method works because the metal screws used to secure the drywall are typically secured to a stud. Wait until the magnet sticks to the wall and mark the location of the stud—it's that easy.

How do I make sure my studs are level? ›

Besides using shims, you can use sandpaper or a wood planer to level problematic studs, or use extra layers of drywall glue. The method you use will depend on the amount of leveling that needs to be done.

How many studs are on a 20 ft wall? ›

20'x12”which gives you 240 inches in total for the walls length. This gives you 15 equal 16 inch spaces. Now you have to add one more stud to start or finish the wall as the case may be. So the total number of studs you'll need will be 16.

How do I know what size studs I need? ›

To find the stud size just measure the diameter of the shank. The shank is the shaft-like part of the bolt or stud. Preferably use calipers to obtain an accurate measure of the shank's diameter, but a ruler works too. In most automotive instances, the shank's diameter is going to be either 1/4, 5/16, or 3/8.

Can I mount a TV without studs? ›

Mounting a TV without studs can be a safe and reliable solution if careful consideration is made about the limits of the wall and the toggles. Molly bolts are an interesting anchor for a no-studs TV mount. They combine the ease of installation with a lot of strength — a large molly bolt can hold up to 50 lbs.

Are stud finders accurate? ›

Most stud finders today are highly accurate. However, if you're searching for a stud behind drywall, you can confirm the accuracy of your finding by pounding on the wall with the palm of your hand or a fist. First, pound where the device tells you the stud is located (it should feel solid and make little or no sound).

Where do you start measuring for studs? ›

If you start in a corner and measure out 16 inches and you don't find a stud, you should find one at 24 inches. You can also try holding a flashlight against a wall and looking down the wall to see if you can tell where two pieces of drywall meet. At that intersection, you'll definitely find a stud.

What to use for furring strips? ›

A: Screws are generally best for furring strips because screws offer a more secure hold, due to their threaded shafts. Some people choose to use nails with furring strips, but most professionals choose screws.

How do I make sure my studs are straight? ›

If you find a bowed stud, which you will, grab your saw, set the table at 45 degrees, and cut across twice to create a small open space that will allow you to push the stud straight. Enlist a friend to help, and you can add another board to the side of the stud and nail it into the stud to keep it straight.

How far apart are studs in a wall? ›

They are usually placed 16 inches apart on all walls. It can vary in older homes, but rarely would you find studs more than 24 inches apart. Windows and doors are also framed by studs for support. Above wide windows and doors, you might even find a wide header board.

What is a good alternative to a stud finder? ›

How to Find a Stud in the Wall
  • Tap the Wall. Sometimes all it takes to find the general location of a stud is to tap the wall. ...
  • Look for Light Switches and Outlets. ...
  • Use Magnets to Find Fasteners. ...
  • Look for Dimples in Drywall. ...
  • Look for Dimples in Trim. ...
  • Measure from the Corner of the Room. ...
  • Download a Stud-Finder App. ...
  • Drill Holes.
Dec 1, 2023

How many 2X4 do I need for a 12x12 room? ›

Eight-foot long 2-inch-by4-inch lumber is used for wall studs. A 12-foot-by-12-foot room requires 28. Buy a few in addition in case you discover flaws in one of the lengths of lumber. The ceiling and floor joists should be 12-foot-long 2-foot by 4-foot lengths.

How far apart should studs be? ›

Stud spacing is normally 16 inches in exterior walls, although 24-inch spacing of 2×4 studs is acceptable in one-story buildings if wall sheathing or siding is of adequate thickness to bridge across studs.

How many studs do I need for a 12 foot wall? ›

Let's say you have a wall that is 12 feet (144 inches) long, you're using 16-inch stud spacing, and you want double studs at both ends and single layer at the top and bottom of the wall. You're using standards 2 x 4 studs with 8 ft length. So, in this example, you would need 15 studs to frame the wall.

How many studs are in a unit of 2X4? ›

Full Unit (294 count) 2X4 Studs.

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