You are here: Home > Inch Standard Fasteners > Screws > Machine Screws

Inch Standard - Screws - Machine Screws

(GRINCLSCCAMS)

Choosing Drywall Screws per Application

Drywall
Thickness
Framing
Material
Screw
Length
Screw Spacing
Walls
Screw Spacing
Ceiling
Threading
3/8", 1/2" or 5/8" Wood 1 1/4" 16" 16" Coarse
1/2" or 5/8" Steel 1" 16" 12" Fine
5/8" Steel 1 1/8" 16" 12" Fine
3/4" Steel 1 1/4" 16" 12" Fine

Drywall Screws

Description and Application

Drywall screws are specialty screws designed for use in drywall/gyprock applications. The bugle head style, sharp point and threading of these screws are made to attach drywall to wood or metal studs. They provide the greatest holding power in drywall while not damaging the drywall itself.

For jobs where drywall is attached to heavy gauge metal (20-14 gauge), or driving through a tougher cement board, a drywall screw with a self drilling point often comes in very handy.

Trim Head drywall screws have a regular twin lead thread profile, a sharp point and countersunk flat head of width approximately 2/3 that of a regular bugle drywall screw head. Trim head drywall screws are often used to attach wood trim to steel studs of up to 20 gauge thick.

All drywall screws available at Aspen Fasteners are in bulk/carton quantities and are made of hardened steel with a black phosphate finish and with either phillips or square drives.

Coarse Threads, Fine Threads or Hi-Lo Threads

Using the wrong type of drywall screw can result in poorly finished walls increasing the incidence of dimples, pops and/or visible seams. Coarse thread drywall screws are preferred for applications where the substrate behind the drywall is wood. The deep and coarse thread provides much greater holding power. On the other hand, in commercial applications where drywall screws are often being driven into steel studs, a fine thread drywall screw offers better holding strength. The Hi-Lo variation is a double-lead thread profile, consisting of a high and low thread and an extra sharp point. This thread type needs less torque to drive into the substrate than a regular drywall screw thread. It also offers greater thread engagement and consistently provides more resistance to vibrational loosening forces.

Phillips or Square Drive

Aspen Fasteners offers drywall screws with either phillips or square drives. Phillips drive screws are easier to load onto the drive bit, but the phillips drive bit has a tendency to cam out of the recess in the head of the screw. The square drive on the other hand may be slightly more difficult to load onto the drive bit, it will stay on better and not cam out as easily. The square drive is preferable when greater torque is required during installation. For additional information about the square drive recess including dimensions and technical specifications, click here.